Ola Nilsen

• Kvamme, Kristian; Ruud, Amund; Weibye, Kristian; Sajavaara, Timo & Nilsen, Ola (2021). Phosphites as precursors in atomic layer deposition thin film synthesis. Journal of Vacuum Science & Technology. A. Vacuum, Surfaces, and Films. ISSN 0734-2101. 39(3). doi: 10.1116/6.0000844. Fulltekst i vitenarkiv
• Gorzkowska-Sobas, Agnieszka A; Lausund, Kristian Blindheim; de Koning, Martijn; Petrovic, Veljko; Chavan, Sachin Maruti & Smith, Martin W. (2021). Utilizing Zirconium MOF-functionalized fiber substrates prepared by molecular layer deposition for toxic gas capture and chemical warfare agent degradation. Global Challenges. ISSN 2056-6646. doi: 10.1002/gch2.202100001. Fulltekst i vitenarkiv
• Rogowska, Melania; Hansen, Per-Anders Stensby; Sønsteby, Henrik Hovde; Dziadkowiec, Joanna; Valen, Håkon & Nilsen, Ola (2021). Molecular layer deposition of photoactive metal-naphthalene hybrid thin films. Dalton Transactions. ISSN 1477-9226. 50(37), s. 12896–12905. doi: 10.1039/d1dt02201f.
• Sønsteby, Henrik Hovde; Skaar, Erik; Fjellvåg, Helmer & Nilsen, Ola (2021). Effect of Subcycle Arrangement on Direct Epitaxy in ALD of LaNiO3. ACS Applied Electronic Materials. ISSN 2637-6113. 3(1), s. 292–298. doi: 10.1021/acsaelm.0c00855.
• Kvalvik, Julie Nitsche; Borgersen, Jon; Hansen, Per-Anders Stensby & Nilsen, Ola (2020). Area-selective atomic layer deposition of molybdenum oxide. Journal of Vacuum Science & Technology. A. Vacuum, Surfaces, and Films. ISSN 0734-2101. 38(4), s. 042406-1–042406-9. doi: 10.1116/6.0000219. Fulltekst i vitenarkiv
• Cheng, Chaoqun; Akram, Muhammad Nadeem; Nilsen, Ola; Pryds, Nini & Wang, Kaiying (2020). Solar-driven plasmonic heterostructure Ti/TiO2−x with gradient doping for sustainable plasmon-enhanced catalysis. Physical Chemistry, Chemical Physics - PCCP. ISSN 1463-9076. 22(15), s. 7769–7777. doi: 10.1039/d0cp00672f. Fulltekst i vitenarkiv
• Hu, Yang; Miikkulainen, Ville; Mizohata, Kenichiro; Norby, Truls Eivind; Nilsen, Ola & Fjellvåg, Helmer (2020). Ionic conductivity in LixTaOy thin films grown by Atomic Layer Deposition (ALD). Electrochimica Acta. ISSN 0013-4686. 361. doi: 10.1016/j.electacta.2020.137019. Fulltekst i vitenarkiv
• Kjeldstad, Torunn; Thøgersen, Annett; Stange, Marit Synnøve Sæverud; Jensen, Ingvild Julie Thue; Nilsen, Ola & Galeckas, Augustinas [Vis alle 7 forfattere av denne artikkelen] (2020). Selective etching of nanostructured a-Si:Al and its effect on porosity, Al gradient and surface oxidation. Thin Solid Films. ISSN 0040-6090. 702. doi: 10.1016/j.tsf.2020.137982. Fulltekst i vitenarkiv Vis sammendrag

  Nanoporous amorphous silicon (a-Si) with <5 nm cylindrical pores have been fabricated by phase separation of aluminum (Al) and silicon, forming self-assembled Al nanowires (NWs), followed by subsequent removal of Al by wet etching. This work studies the removal process of the Al NWs when using the different etchants HCl, H3PO4, and H2SO4. Total reflectance measurements are used in combination with theoretical modeling to estimate the lateral gradient of Al concentration formed during the etching process. X-ray Photoelectron Spectroscopy is used to show that the choice of Al etching agent has implications for the surface states of the remaining a-Si matrix. We have found that H3PO4 is the most efficient etching agent, while HCl provides a less oxidized a-Si matrix in addition to the least reflective surface. By varying the etching agent, the degree of surface oxidation and shape of Al gradient throughout the film can be tuned.

• Bratvold, Jon E.; Fjellvåg, Helmer & Nilsen, Ola (2020). Phase and Orientation Control of NiTiO3 Thin Films. Materials. ISSN 1996-1944. 13(1), s. 1–19. doi: 10.3390/ma13010112. Fulltekst i vitenarkiv
• Kvalvik, Julie Nitsche; Kvamme, Kristian Breivik; Almaas, Kjetil; Ruud, Amund; Sønsteby, Henrik Hovde & Nilsen, Ola (2020). LiF by atomic layer deposition—Made easy. Journal of Vacuum Science & Technology. A. Vacuum, Surfaces, and Films. ISSN 0734-2101. 38(5), s. 1–4. doi: 10.1116/6.0000314. Fulltekst i vitenarkiv
• Sønsteby, Henrik Hovde; Bratvold, Jon Einar; Killi, Veronica Anne-Line Kathrine; Choudhury, Devika; Elam, Jeffrey W. & Fjellvåg, Helmer [Vis alle 7 forfattere av denne artikkelen] (2020). tert-butoxides as precursors for atomic layer deposition of alkali metal containing thin films. Journal of Vacuum Science & Technology. A. Vacuum, Surfaces, and Films. ISSN 0734-2101. 38, s. 1–15. doi: 10.1116/6.0000589. Fulltekst i vitenarkiv
• Hansen, Per-Anders Stensby; Zikmund, Tomas; Yu, Ting; Kvalvik, Julie Nitsche; Aarholt, Thomas & Prytz, Øystein [Vis alle 8 forfattere av denne artikkelen] (2020). Single-step approach to sensitized luminescence through bulk-embedded organics in crystalline fluorides. Communications chemistry. ISSN 2399-3669. 3. doi: 10.1038/s42004-020-00410-0. Fulltekst i vitenarkiv
• Kvalvik, Julie Nitsche; Hansen, Per-Anders Stensby & Nilsen, Ola (2020). Design of experiments approach to luminescent CaMoO4 by atomic layer deposition. Journal of Vacuum Science & Technology. A. Vacuum, Surfaces, and Films. ISSN 0734-2101. 38. doi: 10.1116/6.0000327. Fulltekst i vitenarkiv
• Lausund, Kristian Blindheim; Olsen, Malin; Hansen, Per-Anders Stensby; Valen, Håkon & Nilsen, Ola (2020). MOF thin films with bi-aromatic linkers grown by molecular layer deposition. Journal of Materials Chemistry A. ISSN 2050-7488. 8(5), s. 2539–2548. doi: 10.1039/c9ta09303f. Fulltekst i vitenarkiv
• Sønsteby, Henrik Hovde; Skaar, Erik; Bratvold, Jon Einar; Freeland, John W.; Yanguas-Gil, Angel & Elam, Jeffrey W. [Vis alle 8 forfattere av denne artikkelen] (2020). Tuning electronic properties in LaNiO3 thin films by B-site Cu-substitution. Journal of Materials Chemistry C. ISSN 2050-7526. 8, s. 12662–12668. doi: 10.1039/D0TC03406A.
• Sønsteby, Henrik Hovde; Killi, Veronica Anne-Line Kathrine; Storaas, Thomas Aarflot; Choudhuy, Devika; Elam, Jeffrey W. & Fjellvåg, Helmer [Vis alle 7 forfattere av denne artikkelen] (2020). Understanding KOtBu in atomic layer deposition–in situ mechanistic studies of the KNbO3 growth process. Dalton Transactions. ISSN 1477-9226. doi: 10.1039/D0DT02324H.
• Ellingsen, Josef Gert Åsheim; Venkatachalapathy, Vishnukanthan; Azarov, Alexander; Nilsen, Ola & Kuznetsov, Andrej (2020). Al incorporation during metal organic chemical vapour deposition of aluminium zinc oxide. Thin Solid Films. ISSN 0040-6090. 709. doi: 10.1016/j.tsf.2020.138245. Fulltekst i vitenarkiv
• Fjellvåg, Øystein; Ruud, Amund; Sønsteby, Henrik Hovde; Nilsen, Ola & Fjellvåg, Helmer (2020). Crystallization, Phase Stability, and Electrochemical Performance of β-MoO3 Thin Films. Crystal Growth & Design. ISSN 1528-7483. 20(6), s. 3861–3866. doi: 10.1021/acs.cgd.0c00156. Fulltekst i vitenarkiv
• Sønsteby, Henrik Hovde; Skaar, Erik; Fjellvåg, Øystein; Bratvold, Jon E.; Fjellvåg, Helmer & Nilsen, Ola (2020). A foundation for complex oxide electronics -low temperature perovskite epitaxy. Nature Communications. ISSN 2041-1723. 11(1). doi: 10.1038/s41467-020-16654-2. Fulltekst i vitenarkiv
• Brennhagen, Anders; Kvamme, Kristian Breivik; Sverdlilje, Katja S. S. & Nilsen, Ola (2020). High power iron phosphate cathodes by atomic layer deposition. Solid State Ionics. ISSN 0167-2738. 353. doi: 10.1016/j.ssi.2020.115377. Fulltekst i vitenarkiv
• Duparc, Marion Jeanne Louise; Sønsteby, Henrik Hovde; Nilsen, Ola; Sjåstad, Anja Olafsen & Fjellvåg, Helmer (2020). Atomic Layer Deposition of GdCoO3 and Gd0.9Ca0.1CoO3. Materials. ISSN 1996-1944. 13(1), s. 1–10. doi: 10.3390/ma13010024. Fulltekst i vitenarkiv
• Sønsteby, Henrik Hovde; Nilsen, Ola & Fjellvåg, Helmer (2019). Chemical Uniformity in Ferroelectric KxNa1−xNbO3 Thin Films. Global Challenges. ISSN 2056-6646. 3(10). doi: 10.1002/gch2.201800114. Fulltekst i vitenarkiv
• Zhang, Zengxing; Wang, Yonghua; Hansen, Per-Anders Stensby; Du, Kang; Gustavsen, Kim Robert & Liu, Guohua [Vis alle 10 forfattere av denne artikkelen] (2019). Black silicon with order-disordered structures for enhanced light trapping and photothermic conversion. Nano Energy. ISSN 2211-2855. 65, s. 1–8. doi: 10.1016/j.nanoen.2019.103992.
• Getz, Michael; Nilsen, Ola & Hansen, Per-Anders Stensby (2019). Sensors for optical thermometry based on luminescence from layered YVO4: Ln3+ (Ln = Nd, Sm, Eu, Dy, Ho, Er, Tm, Yb) thin films made by atomic layer deposition. Scientific Reports. ISSN 2045-2322. 9(1). doi: 10.1038/s41598-019-46694-8.
• Hansen, Per-Anders Stensby; Granerød, Cecilie Skjold; Prytz, Øystein & Nilsen, Ola (2019). Controlling luminescence and quenching mechanisms in subnanometer multilayer structure of europium titanate thin films. Journal of Luminescence. ISSN 0022-2313. 215. doi: 10.1016/j.jlumin.2019.116618. Fulltekst i vitenarkiv
• Momtazi, Leva; Sønsteby, Henrik Hovde & Nilsen, Ola (2019). Biocompatible organic-inorganic hybrid materials based on nucleobases and titanium developed by molecular layer deposition. Beilstein Journal of Nanotechnology. ISSN 2190-4286. 10(1), s. 399–411. doi: 10.3762/bjnano.10.39. Fulltekst i vitenarkiv
• Bratvold, Jon E.; Sønsteby, Henrik Hovde; Nilsen, Ola & Fjellvåg, Helmer (2019). Control of growth orientation in as-deposited epitaxial iron-rich nickel ferrite spinel. Journal of Vacuum Science & Technology. A. Vacuum, Surfaces, and Films. ISSN 0734-2101. 37(2), s. 1–7. doi: 10.1116/1.5082012. Fulltekst i vitenarkiv
• Sønsteby, Henrik Hovde; Bratvold, Jon E.; Weibye, Kristian; Fjellvåg, Helmer & Nilsen, Ola (2018). Phase Control in Thin Films of Layered Cuprates. Chemistry of Materials. ISSN 0897-4756. 30(3), s. 1095–1101. doi: 10.1021/acs.chemmater.7b05005.
• Momtazi, Leva; Dartt, Darlene Ann; Nilsen, Ola & Eidet, Jon Roger (2018). Molecular layer deposition builds biocompatible substrates for epithelial cells. Journal of Biomedical Materials Research. Part A. ISSN 1549-3296. 106(12), s. 3090–3098. doi: 10.1002/jbm.a.36499.
• Sønsteby, Henrik Hovde; Aarholt, Thomas; Prytz, Øystein; Fjellvåg, Helmer & Nilsen, Ola (2018). First Complex Oxide Superconductor by Atomic Layer Deposition. Chemical Communications. ISSN 1359-7345. 54(59), s. 8253–8256. doi: 10.1039/c8cc04998j.
• Dziadkowiec, Joanna; Javadi, Shaghayegh; Bratvold, Jon E.; Nilsen, Ola & Røyne, Anja (2018). Surface Forces Apparatus Measurements of Interactions between Rough and Reactive Calcite Surfaces. Langmuir. ISSN 0743-7463. 34((25)), s. 7248–7263. doi: 10.1021/acs.langmuir.8b00797. Fulltekst i vitenarkiv
• Vajeeston, Ponniah; Fjellvåg, Helmer & Nilsen, Ola (2018). Search for potential precursors for Si-atomic layer deposition- a quantum chemical study. Materials Letters. ISSN 0167-577X. 216, s. 189–192. doi: 10.1016/j.matlet.2018.01.040. Fulltekst i vitenarkiv Vis sammendrag

  Thin film of silicon is an interesting material for many technological applications in electronic industry and in energy harvesting technologies, but requires a method for controlled growth of thin films. The purpose of this study is to screen a wide variety of Si content precursors for Si atomic layer deposition (ALD) reactions using state-of-the-art density-functional calculations. Among the studied 85 Si content precursors we found that C7H12OSi–Methoxy-trivinyl-silane and C7H9NSi–Benzyliminosilane show positive indications for ALD reactivity for Si deposition. We believe that this finding will be helpful to develop low-cost, high-energy efficiency thin-film solar cells for future scale up implementation in photovoltaics.

• Sønsteby, Henrik Hovde; Fjellvåg, Helmer & Nilsen, Ola (2017). Functional perovskites by atomic layer deposition - an overview. Advanced Materials Interfaces. ISSN 2196-7350. 4:1600903, s. 1–15. doi: 10.1002/admi.201600903.
• Lausund, Kristian Blindheim; Petrovic, Veljko & Nilsen, Ola (2017). All-gas-phase synthesis of amino-functionalized UiO-66 thin films. Dalton Transactions. ISSN 1477-9226. 46(48), s. 16983–16992. doi: 10.1039/c7dt03518g.
• Sønsteby, Henrik Hovde; Weibye, Kristian; Bratvold, Jon E. & Nilsen, Ola (2017). Rubidium containing thin films by atomic layer deposition. Dalton Transactions. ISSN 1477-9226. 46(46), s. 16139–16144. doi: 10.1039/c7dt03753h.
• Ferreira, Ana RV; Haapanen, Janne; Makela, Jyrki M; Bratvold, Jon E.; Nilsen, Ola & Tuominen, Mikko [Vis alle 8 forfattere av denne artikkelen] (2017). Comparison of different coating techniques on the properties of FucoPol films. International Journal of Biological Macromolecules. ISSN 0141-8130. 103, s. 268–274. doi: 10.1016/j.ijbiomac.2017.05.021.
• Getz, Michael; Hansen, Per-Anders Stensby; Fjellvåg, Øystein Slagtern; Ahmed, Mohammed Amin Karim; Fjellvåg, Helmer & Nilsen, Ola (2017). Intense NIR emission in YVO4:Yb3+ thin films by atomic layer deposition. Journal of Materials Chemistry C. ISSN 2050-7526. 5(33), s. 8572–8578. doi: 10.1039/c7tc02135f. Fulltekst i vitenarkiv
• Momtazi, Leva; Sønsteby, Henrik Hovde; Dartt, DA; Eidet, Jon Roger & Nilsen, Ola (2017). Bioactive titaminates from molecular layer deposition. RSC Advances. ISSN 2046-2069. 7(34), s. 20900–20907. doi: 10.1039/C7RA01918A. Fulltekst i vitenarkiv
• Getz, Michael; Hansen, Per-Anders; Ahmed, Mohammed Amin Karim; Fjellvåg, Helmer & Nilsen, Ola (2017). Luminescent YbVO4 by atomic layer deposition. Dalton Transactions. ISSN 1477-9226. 46(9), s. 3008–3013. doi: 10.1039/c7dt00253j. Fulltekst i vitenarkiv
• Napari, M; Tarvainen, O; Kinnunen, S; Arstila, K; Julin, J & Fjellvåg, Øystein Slagtern [Vis alle 9 forfattere av denne artikkelen] (2017). The α and γ plasma modes in plasma-enhanced atomic layer deposition with O2-N2 capacitive discharges. Journal of Physics D: Applied Physics. ISSN 0022-3727. 50(9). doi: 10.1088/1361-6463/aa59b3. Fulltekst i vitenarkiv
• Kjeldstad, Torunn; Thøgersen, Annett; Nilsen, Ola; Monakhov, Edouard & Galeckas, Augustinas (2017). Controllable template approach for ZnO nanowire growth. Physica Status Solidi (a) applications and materials science. ISSN 1862-6300. 214(2), s. 1–6. doi: 10.1002/pssa.201600480. Vis sammendrag

  Anodic aluminum oxide (AAO) is an optically transparent material with uniform hexagonal pores, which has widely been used as a template for nanowire growth. This study examines the potential of utilizing commercially available AAO to fabricate sub-10 nm ZnO nanowires by atomic layer deposition. The pore diameter of the AAO framework is reduced by controlled deposition of . Subsequently, ZnO is deposited and ZnO nanowires are obtained. The analysis of structural and optical properties shows that the nanowires are polycrystalline, and exhibit a pronounced near band edge emission. Photoluminescence (PL) measurements are performed to monitor the effect of additional coating with and ZnO, on the optical stability of the AAO. The measurements indicate that the PL is highly influenced by the adsorption and desorption of species from the ambient at the surface. ALD deposition of a thin layer reduces considerably the effect of ambient atmosphere. The layer of facilitates PL characterization of very thin ZnO nanowires.

• Getz, Michael; Hansen, Per-Anders; Fjellvåg, Helmer & Nilsen, Ola (2017). Luminescent properties of europium titanium phosphate thin films deposited by atomic layer deposition. RSC Advances. ISSN 2046-2069. 7(13), s. 8051–8059. doi: 10.1039/c6ra27644j. Fulltekst i vitenarkiv
• Ruud, Amund; Miikkulainen, Ville; Mizohata, Kenichiro; Fjellvåg, Helmer & Nilsen, Ola (2017). Enhanced process and composition control for atomic layer deposition with lithium trimethylsilanolate . Journal of Vacuum Science & Technology. A. Vacuum, Surfaces, and Films. ISSN 0734-2101. 35(1). doi: 10.1116/1.4972209.
• Lausund, Kristian Blindheim & Nilsen, Ola (2016). All-gas-phase synthesis of UiO-66 through modulated atomic layer deposition. Nature Communications. ISSN 2041-1723. 7. doi: 10.1038/ncomms13578.
• Lanford, WA; Parenti, M; Nordell, BJ; Paquette, MM; Caruso, AN & Mäntymäki, M [Vis alle 17 forfattere av denne artikkelen] (2016). Nuclear reaction analysis for H, Li, Be, B, C, N, O and F with an RBS check. Nuclear Instruments and Methods in Physics Reseach B. ISSN 0168-583X. 371, s. 211–215. doi: 10.1016/j.nimb.2015.10.052.
• Samarasingha, Pushpaka; Sottmann, Jonas; Margadonna, Serena; Emerich, Hermann; Nilsen, Ola & Fjellvåg, Helmer (2016). In situ synchrotron study of ordered and disordered LiMn1.5Ni0.5O4 as lithium ion battery positive electrode. Acta Materialia. ISSN 1359-6454. 116, s. 290–297. doi: 10.1016/j.actamat.2016.06.040.
• Gustavsen, Kim Robert; Nygård, Ken Alexander; Honerød-Bentsen, Preben; Du, Kang; Liu, Guohua & Tayyib, Muhammad [Vis alle 11 forfattere av denne artikkelen] (2016). Wafer-level fabrication and characterization of amorphous thin films MoS2 prepared by RF magnetron sputtering technique. ECS Transactions. ISSN 1938-5862. 75(13), s. 131–137. doi: 10.1149/07513.0131ecst. Vis sammendrag

  In this paper, we present a study of wafer-level process for deposition of amorphous thin film MoS2 by radio-frequency (RF) magnetron sputtering technique. Thin film deposition was performed in argon atmosphere with pressure around 10-2 to 10-4 Torr, RF power between 100-250 W and temperature from room temperature up to 250°C. X-ray diffraction indicates that the thin films are amorphous. Deposition rate and sulphur concentration showed a clear dependence on variation in RF power. Surface roughness increase as temperature was increased from room temperature up to 250°C. Photocurrent increases about 20% under white light illumination. The thin films are continuous with low roughness which might make it a potential candidate for wafer-scale production for advanced electronics or sensor applications.

• Hu, Yang; Ruud, Amund; Miikkulainen, Ville; Norby, Truls; Nilsen, Ola & Fjellvåg, Helmer (2016). Electrical characterization of amorphous LiAlO2 thin films deposited by atomic layer deposition. RSC Advances. ISSN 2046-2069. 6(65), s. 60479–60486. doi: 10.1039/c6ra03137d.
• Rauwel, Erwan Yann; Galeckas, Augustinas; Rauwel, Protima; Hansen, Per-Anders; Wragg, David & Nilsen, Ola [Vis alle 7 forfattere av denne artikkelen] (2016). Metal oxide nanoparticles embedded in rare-earth matrix for low temperature thermal imaging applications. Materials Research Express. ISSN 2053-1591. 3(5). doi: 10.1088/2053-1591/3/5/055010.

Se alle arbeider i Cristin

• Nilsen, Ola (2021). Quinizarin: a large aromatic molecule well suited for atomic layer deposition. Dalton Transactions. ISSN 1477-9226. doi: 10.1039/D1DT00683E.
• Killi, Veronica Anne-Line Kathrine; Thøgersen, Annett; Cavallo, Carmen; Das, Supti; Koposov, Alexey & Nilsen, Ola (2021). Coating of powder by ALD.
• Fjellvåg, Øystein; Sønsteby, Henrik Hovde; Nilsen, Ola; Wolff, Max; Kapaklis, Vassilios & Fjellvåg, Helmer [Vis alle 8 forfattere av denne artikkelen] (2020). Towards Multiferroic Thin Film Composites by Atomic Layer Deposition (ALD) .
• Kvamme, Kristian Breivik; Ruud, Amund; Weibye, Kristian & Nilsen, Ola (2019). Phosphites as precursors in thin film synthesis. Using LiPO as cathode coating in Li-ion batteries.
• Kvamme, Kristian Breivik; Ruud, Amund; Weibye, Kristian & Nilsen, Ola (2019). Phosphites as precursors in thin film synthesis. Using LiPO as cathode coating in Li-ion batteries.
• de Koning, Martijn; Gorzkowska-Sobas, Agnieszka A; Lausund, Kristian Blindheim; Petrovic, Veljko; Nilsen, Ola & Smith, Martin W. (2019). Thin layers of UiO-66-NH2 and their catalytic activity towards selected chemical warfare agents.
• Gorzkowska-Sobas, Agnieszka A; Lausund, Kristian Blindheim; Petrovic, Veljko; de Koning, Martijn; Chavan, Sachin Maruti & Smith, Martin W. (2019). Ammonia adsorption in metal-organic framework materials MLD-deposited on functional substrate for respiratory protection purposes.
• Koposov, Alexey; Gandrud, Knut Bjarne; Lai, Samson Yuxiu; Jensen, Ingvild Julie Thue; Nagell, Marius Uv & Nilsen, Ola (2019). Silicon on the Road. Vis sammendrag

  IFE together with the UiO, University of Tours (France) and SINTEF recently started a new project “Silicon-on-the-Road”, with the primary aim to develop new silicon-based anode materials for lithium ion batteries. Stabilizing the surfaces of silicon particles has proven to be the most challenging step in the development of high capacity silicon-based electrodes. One of the objectives is therefore to create a material that than can coat the active particles and deliver structural integrity for the anode while keeping all the attractive properties of silicon. The project encompasses a range of coating and analyses methodologies. The current presentation will focus on results obtained using one of the more versatile methods; Atomic Layer Deposition (ALD) and our recent results on thin-film electrodes of amorphous Si as model systems for coating development. This project is co-funded by Norwegian industry and the Research Counsil of Norway through the EnergiX program.

• Hval, Halvor Høen; Tripathi, Alok Mani; Ruud, Amund; Emerich, Hermann; Forseth, Sissel & Nilsen, Ola (2019). Make Batteries Safe Again.
• Brennhagen, Anders; Kvamme, Kristian Breivik; Sverdlilje, Katja S. S. & Nilsen, Ola (2019). Amorphous Iron Phosphates for Thin Film batteries.
• Brennhagen, Anders & Nilsen, Ola (2019). Forskningstorget 2019 - Batteriproduksjon på stand.
• Chavan, Sachin Maruti; Gorzkowska-Sobas, Agnieszka A; de Koning, Martijn; Lausund, Kristian Blindheim; Petrovic, Veljko & Nilsen, Ola (2019). Towards adsorptive and catalytically active materials using an all-gas-phase UiO-66-NH2 synthesis approach.
• Nitsche Kvalvik, Julie; Hansen, Per-Anders Stensby & Nilsen, Ola (2019). Area-selective deposition of MoO3 thin films by atomic layer deposition.
• Hval, Halvor Høen; Ruud, Amund; Forseth, Sissel; Emerich, Hermann; Nilsen, Ola & Fjellvåg, Helmer (2019). Operando investigation of batteries.
• Hval, Halvor Høen; Tripathi, Alok Mani; Ruud, Amund; Emerich, Hermann; Forseth, Sissel & Nilsen, Ola (2019). Make Batteries Safe Again.
• Dziadkowiec, Joanna; Zareeipolgardani, Bahareh; Bratvold, Jon E.; Nilsen, Ola; Dysthe, Dag Kristian & Røyne, Anja (2019). Long-range repulsive forces between reactive calcite surfaces are generated due to nucleation in a confined solution.
• Hansen, Per-Anders Stensby; Zikmund, Tomas; Yu, Ting; Nitsche Kvalvik, Julie; Aarholt, Thomas & Prytz, Øystein [Vis alle 8 forfattere av denne artikkelen] (2018). Aromatic-fluoride nanocomposite materials by atomic layer deposition.
• Hansen, Per-Anders Stensby; Meijerink, Andries & Nilsen, Ola (2018). Strong TiO2 sensitization of Tb3+ by preventing Ti-Tb charge transfer quenching in subnanometer multilayer structures.
• Hansen, Per-Anders Stensby; Nesteng, Hanne; Svendsen, Ole Joachim & Nilsen, Ola (2018). Blue, green and red emitting lanthanide-organic hybrid films excitable with long wavelength UV.
• Hval, Halvor Høen; Ruud, Amund; Forseth, Sissel; Emerich, Hermann; Nilsen, Ola & Fjellvåg, Helmer (2018). Operando investigation of batteries.
• Hval, Halvor Høen; Ruud, Amund; Forseth, Sissel; Emerich, Hermann; Nilsen, Ola & Fjellvåg, Helmer (2018). Operando investigation of batteries.
• Dziadkowiec, Joanna; Javadi, Shaghayegh; Bratvold, Jon E.; Nilsen, Ola & Røyne, Anja (2018). Nucleation in solution confined between reactive surfaces can generate long-range repulsive forces.
• Dziadkowiec, Joanna; Javadi, Shaghayegh; Bratvold, Jon E.; Nilsen, Ola & Røyne, Anja (2018). Adhesive and repulsive forces between calcite surfaces.
• Kjeldstad, Torunn; Thøgersen, Annett; Galeckas, Augustinas; Monakhov, Eduard; Stange, Marit Synnøve Sæverud & Nilsen, Ola (2018). Aluminum nanowires in amorphous silicon.
• Thøgersen, Annett; Stange, Marit Synnøve Sæverud; Galeckas, Augustinas; Nilsen, Ola & Monakhov, Eduard (2018). Aluminum nanowires in amorphous silicon.
• Kvamme, Kristian Breivik; Sverdlilje, Katja Sofie Støren & Nilsen, Ola (2018). Thin film batteries at UiO . Vis sammendrag

  Batteries are fast becoming the go-to energy storage solution of our future, even for highly demanding applications such as aviation. The growing expectations and demands for our future batteries require radical improvements in both design and construction. Several approaches are being pursued throughout the research community. At UiO, we are exploring solid-state electrolytes to fulfil these demands. Changing from a liquid to a solid electrolyte is a drastic change in battery design, and solid electrolytes will significantly improve the properties of batteries. This will in turn enable new applications and further decouple our civilization from fossil fuels. Most solid materials have low ionic conductivity, but not all. We are exploring solid materials with high ionic conductivity, including combinations of organic and inorganic structures forming a class of hybrid materials. This work is based on our previous, successful work on high-performance FePO4 cathode materials that show quasi-capacitive behaviour.

• Javadi, Shaghayegh; Dziadkowiec, Joanna; Røyne, Anja; Bratvold, Jon E.; Nilsen, Ola & Hiorth, Aksel (2018). Synthetic CaCO3 surfaces in aqueous solutions – AFM and Surface Force Apparatus (SFA) measurements .
• Skottvoll, Frøydis Sved; Nilsen, Ola; Krauss, Stefan; Sullivan, Gareth & Wilson, Steven Ray Haakon (2018). Integrating highly miniaturized LC-MS systems with “Organ on a Chip”; the future of preclinical modelling .
• Kvamme, Kristian Breivik; Ruud, Amund; Weibye, Kristian & Nilsen, Ola (2017). LiPO barriers by ALD Surface modification of LiFePO4 cathodes .
• Lausund, Kristian Blindheim & Nilsen, Ola (2017). Crystallization of hybrid films to form the metal-organic framework UiO-66 .
• Kjeldstad, Torunn; Galeckas, Augustinas; Nilsen, Ola; Azarov, Alexander; Stange, Marit Synnøve Sæverud & Diplas, Spyridon [Vis alle 7 forfattere av denne artikkelen] (2017). Self-assembly of Al-nanowires in silicon.
• Thøgersen, Annett; Kjeldstad, Torunn; Jensen, Ingvild Julie Thue; Muntingh, Agnar Georg Peder; Stange, Marit Synnøve Sæverud & Ulyashin, Alexander [Vis alle 9 forfattere av denne artikkelen] (2017). Plasmonic properties of aluminium nanowires in amorphous silicon and inverted silicon nanowires.
• Thøgersen, Annett; Kjeldstad, Torunn; Jensen, Ingvild Julie Thue; Stange, Marit Synnøve Sæverud; Ulyashin, Alexander & Galeckas, Augustinas [Vis alle 9 forfattere av denne artikkelen] (2017). Growing and characterizing self-organizing aluminium nanowires in amorphous silicon.
• Nilsen, Ola; Gandrud, Knut Bjarne; Ruud, Amund & Fjellvåg, Helmer (2017). Atomic Layer Deposition for Thin-Film Lithium-Ion Batteries. I Bachmann, Julien (Red.), Atomic Layer Deposition in Energy Conversion Applications. Wiley-VCH. ISSN 9783527339129. s. 183–207.
• Dziadkowiec, Joanna; Javadi, Shaghayegh; Bratvold, Jon E.; Nilsen, Ola & Røyne, Anja (2017). Interactions between reactive CaCO3 surfaces in aqueous solutions -Surface Forces Apparatus measurements .
• Ruud, Amund; Sottmann, Jonas; Slawinski, Wojciech Andrzej; Nilsen, Ola & Fjellvåg, Helmer (2017). Lithiation processes in α-MoO3 for lithium ion battery .
• Kjeldstad, Torunn; Galeckas, Augustinas; Nilsen, Ola; Azarov, Alexander; Stange, Marit Synnøve Sæverud & Diplas, Spyridon [Vis alle 7 forfattere av denne artikkelen] (2016). A new silicon nanostructure.
• Kjeldstad, Torunn; Galeckas, Augustinas; Monakhov, Edouard; Nilsen, Ola & Thøgersen, Annett (2016). Controllable template approach for ZnO nanowire growth.
• Lausund, Kristian Blindheim & Nilsen, Ola (2016). Atomic Layer Deposition of the Metal Organic Framework UiO-66.
• Røyne, Anja; Bergsaker, Anne Schad; Javadi, Shaghayegh; Dziadkowiec, Joanna; Bratvold, Jon E. & Nilsen, Ola (2016). The role of surface forces and confined fluid films in the slow deformation of rocks.
• Li, Xinyu; Fjellvåg, Helmer & Nilsen, Ola (2020). Na-Based Layered Tellurate Na2M2TeO6 (M = Zn, Mg): Synthesis, Crystal Structure and Na+ Ion Diffusion . Matematisk Naturvitenskapelig fakultet, Universitetet i Oslo.
• Killi, Veronica Anne-Line Kathrine; Nilsen, Ola & Sønsteby, Henrik Hovde (2020). Tynne filmer av ruthenater med atomlagsdeposisjon (ALD). Kjemisk Institutt, Universitetet i Oslo.
• Sørensen, Silje Holm; Nilsen, Ola & Hansen, Per-Anders Stensby (2020). Organic Sensitization in Lanthanide Fluoride Nanostructures for Upconversion. Kjemisk Institutt, Universitetet i Oslo. Vis sammendrag

  The objective of this thesis is to make organic sensitized upconversion thin films for application on photovoltaic and photocatalytic devices. Upconversion is a light conversion process where two photons of low energy come together to form one photon of higher energy. Using this technique, the light from the sun can be modified to correlate with the bandgaps of for example solar cells. This could potentially increase the efficiencies of the devices drastically. To ensure an efficient upconversion process, organic dyes can be implemented into the system. Organic dyes are good absorbers and can therefore work as sensitizers, increasing the efficiencies of the upconversion process. We have explored how molecular layer deposition (MLD) can be used to synthesize thin films of such upconversion structures. The work in this project has been twofold with one part focusing on implementation of organic dyes into thin films using MLD and the second part aiming to make an upconversion system. During the first part of the project, we proved that the sublimation temperatures of perylenes, a group of large organic dyes are highly dependent on their intramolecular forces. We identified that the perylene FA5 with a molecular mass of 985.12 g/mol still is suitable as a precursor for MLD growth despite its large molecular mass. This is a significant expansion in use of heavy molecules for MLD, as compared to prior experience. Furthermore, perylenes have successfully been implemented into thin films using β-diketonates Ln(thd)3as cation precursors. The perylene based films have been made both with and without using the amino acid glycine as a linker between the Ln and the perylene. The films containing glycine have remarkably higher growth ratesthan thosewithout, due to formation of a Ln-Glycine phase during growth. The growth dynamics have been explored by quartz crystal microbalance (QCM) and the optical properties by UV-Vis, showing stronger absorbing properties in the films deposited without linker.All perylene based films formed structuresclose to the stoichiometryLn2Perylene3. The upconversion properties were explored through depositions of lanthanide-fluoride thin films with Tm3+and Nd3+doped in an YbF3matrix. Both dopants were successfully implemented as both Tm3+and Nd3+ luminescence can be seen from cathodoluminescence (CL) measurements,indicating promising luminescent properties. Growth of YbF3 was explored using NH4F as the chosen fluoride precursor and Yb(thd)3 as Yb precursor. We obtained growth rates of approximately 0.2 Å/cycle with good reproducibility, making it a good system.

• Brennhagen, Anders; Nilsen, Ola; Kvamme, Kristian Breivik & Sverdlilje, Katja S. S. (2019). Synthesis and electrochemical characterization of thin film iron phosphates as cathode material for Li-ion batteries. Fysisk institutt, Universitetet i Oslo. Vis sammendrag

  Solid-state batteries is one of the main contenders for domination of the future battery marked. Thin film technology is important in the development of these batteries. In this work, we have shown that amorphous thin film FePO4 with a thickness around 10 nm, deposited by atomic layer deposition (ALD), can reach a specific power above 1 MW/kg and approach theoretical capacity at lower currents. The 10 nm thin film also shows very good cycling stability at elevated currents and can retain 70 % of peak capacity after 8000 cycles at 80 µA (40C). The material also shows a significant self-enhancing mechanism leading to an increase in capacity during early cycling stages. We observed a capacity increase of 90 % for 10 nm after 100 cycles at 80 µA. In this study, we used quartz crystal microbalance (QCM) analysis to establish a stable ALD process for depositing amorphous thin films from the Fe-P-O system. By varying the pulsing ratio between the precursors, we obtained films with different compositions and chose to study Fe4(P2O7)3 and FePO4 more in detail. The films were uniform and flat with an RMS roughness below 1 nm. As the FePO4 films proved to be significantly better than the Fe4(P2O7)3, we focused mainly on FePO4. We used galvanostatic cycling (GC), cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) to characterize the electrochemical properties of the thin films. An important part of this study was to develop a good baseline for testing, including the use of reference batteries. In this work, we confirmed that LiClO4 is a better choice than LiPF6 as electrolyte for testing thin film cathodes, because of minimal side reactions with the steel casing. The FePO4 thin films show a combination of capacitive and redox behavior where both contribute to the capacity. In this study, we have tried to separate the two contributions and find their thickness and current dependency. In an attempt to increase the area capacity of the cathodes without increasing the film thickness, we created soot substrates with high surface 3D structures of carbon, deposited from the flames of a candle. We managed to maintain the structure and evenly coat it with FePO4. Despite the increase in mass, we obtained no higher capacity or better battery performance from the soot batteries.

• Petrovic, Veljko; Nilsen, Ola & Lausund, Kristian Blindheim (2019). Boronic acids in Molecular Layer Deposition. Fysisk institutt, Universitetet i Oslo.
• Olsen, Malin Solheim; Nilsen, Ola & Rukke, Håkon Valen (2019). Porphyrin-based films for photodynamic inactivation of bacteria. Kjemisk institutt, Universitetet i Oslo.
• Bratvold, Jon E.; Nilsen, Ola & Fjellvåg, Helmer (2019). Towards a Model System for Lamellar Magnetism by Atomic Layer Deposition. University of Oslo, Faculty of Mathematics and Natural Sciences, Department of Chemistry. ISSN 1501-7710. 2019(2093).
• Granerød, Cecilie Skjold; Prytz, Øystein; Monakhov, Eduard & Nilsen, Ola (2018). Measuring optical properties on the nanoscale: a STEM-EELS study of ZnO. Universitetet i Oslo. ISSN 1501-7710.
• Momtazi, Leva; Nilsen, Ola & Eidet, Jon Roger (2018). Design and Growth of Bioactive Materials by Molecular Layer Deposition. Universitetet i Oslo. ISSN 1501-7710. 2018(1964).
• Getz, Michael; Nilsen, Ola; Fjellvåg, Helmer & Hansen, Per-Anders Stensby (2017). Design and Growth of Luminescent Thin Films by Atomic Layer Deposition. Universitetet i Oslo. ISSN 1501-7710.
• Sønsteby, Henrik; Fjellvåg, Helmer & Nilsen, Ola (2017). Piezo- and Ferroelectric A+B5+O3 Thin Films. Universitetet i Oslo.

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