Clas Persson

Professor - Structure Physics

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Email clas.persson@fys.uio.no

Phone +47-22852424

Room 109

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Visiting address Forskningsparken Gaustadalleen 21 0349 Oslo

Postal address Postboks 1048 Blindern 0316 OSLO

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Academic Interests

To understand the basic physics of materials from the point of the atomic scale. We do that by theoretically model and calculate complex material structures. The intention is to desig materials for the use in primarily renewable energy technologies, such as solar cells, LEDs, and thermoelectric devices. The physics at the interface between two materials is very important to analyze the electron, ion, and heat transport in these devices. By understanding the fundamental physics of materials, we can propose new, inexpensive, environmental-friendly, and efficient materials. Thus, we are involved in the development of future energy technologies.

We use world-leading and very powerful computer program to calculate the fundamental properties of materials (Wien2k, VASP, Exciting). We are also involved in developing the software in order to studying new material properties. These computer programs are theoretical tools in our studies. The research is focused on analyzing different types of material structures to obtain both broad and deep theoretical understanding of materials at the atomic level to micrometer scale.

Teaching

FYS2140 - Quantum Physics,10 credits (assistant teacher); 2011, 2012, 2019
FYS-MENA4111 - Quantum Mechanical Modeling of Nanomaterials, 10 credits

Higher education and employment history

2011 - present Professor at Department of Physics, UiO. Area: Theoretical Material Physics;

2011- present Associate Professor [Univ Lektor] (20%) at Department of Materials Science and Engineering, Royal Institute of Technology, Stockholm.

2013 - 2017 Deputy Head Research, at Dept of Physics, University of Oslo (UiO), Norway.

2007 - Docent/Associate Professor at Royal Institute of Technology, Stockholm; Area: Theoretical Material Physics for Energy Engineering.

2004 - Assistant Professor at Department of Materials Science and Engineering, Royal Institute of Technology, Stockholm.

2002 - Postdoctor at Solid State Theory Group, National Renewable Energy Laboratory, Golden CO, USA.

2000 - Postdoctor at Condensed Matter Therory, Uppsala University.

1999 - PhD at Material Science Division, Linköping University. Area: Theoretical Studies on Si and SiC.

Cooperation

Collaborative projects and joint papers with over 100 research groups in 27 countries; see Personal Home Page.

Personal Home Page

Clas Persson, home page

Tags: materials science, Theoretical physics, Renewable energy, atomistic modeling, DFT, Green's functions, Programming, SMN

Top five most cited articles:

Electronic and optical properties of Cu₂ZnSnS₄ and Cu₂ZnSnSe₄, C. Persson, J. Appl. Phys. 107, 053710 (2010). No of citations: 509
n-type doping of CuInSe₂and CuGaSe₂,C. Persson, Y.-J. Zhao, S. Lany, and A. Zunger, Phys. Rev. B. 72, 035211 (2005). No of citations: 410
Anomalous grain boundary physics in polycrystalline CuInSe₂, C. Persson and A. Zunger, Phys. Rev. Lett. 91, 266401 (2003). No of citations: 317
Relativistic band structure calculation of cubic and hexagonal SiC polytypes, C. Persson and U. Lindefelt, J. Appl. Phys, 82, 5496 (1997). No of citations: 314
Strong valence-band offset bowing of ZnO_1-xS_x enhances p-type nitrogen doping of ZnO-like alloys, C. Persson, C. Platzer-Björkman, J. Malmström, T.Törndahl, and M. Edoff, Phys. Rev. Lett. 97, 146403 (2006). No of citations: 215

Boström, Mathias; Corkery, Robert W.; Lima, Eduardo R. A.; Malyi, Oleksandr; Buhmann, Stefan Yoshi; Persson, Clas; Brevik, Iver Håkon; Parsons, Drew F. & Fiedler, Johannes (2019). Dispersion Forces Stabilize Ice Coatings at Certain Gas Hydrate Interfaces That Prevent Water Wetting. ACS Earth and Space Chemistry. ISSN 2472-3452. 3, s 1014 . doi: 10.1021/acsearthspacechem.9b00019
David, Denis; Alnoor, Hatim; da Silva Santana, Victor Mancir; Bargiela, Pascal; Nur, Omer; Willander, Magnus; Baldissera, Gustavo; Persson, Clas & Ferreira da Silva, Antonio (2019). Optical properties from photoelectron energy-loss spectroscopy of low-temperature aqueous chemically synthesized ZnO nanorods grown on Si. Semiconductor Science and Technology. ISSN 0268-1242. 34, s 045019
Grini, Sigbjørn; Sopiha, Kostiantyn; Ross, Nils; Liu, Xin; Bjørheim, Tor Svendsen; Platzer-Björkman, Charlotte; Persson, Clas & Vines, Lasse (2019). Strong Interplay between Sodium and Oxygen in Kesterite Absorbers: Complex Formation, Incorporation, and Tailoring Depth Distributions. Advanced Energy Materials. ISSN 1614-6832.
Guzik, Matylda N.; Schrade, Matthias; Tofan, Raluca; Almeida Carvalho, Patricia; Berland, Kristian; Sørby, Magnus Helgerud; Persson, Clas; Gunnæs, Anette Eleonora & Hauback, Bjørn (2019). Long- and short-range structures of Ti1-xHfxNi1.0/1.1Sn half-Heusler compounds and their electric transport properties. CrysteEngComm. ISSN 1466-8033. 21, s 3330- 3342 . doi: 10.1039/C9CE00046A
Huang, Dan; Xue, Yang; Zhou, Wentong; Jiang, Jingwen; Ning, Hua; Guo, Jin; Zhao, Yu-jun; Chen, Rongzhen & Persson, Clas (2019). Ideal half-filled intermediate band position in CuGaS2 generated by Sb-related defect complex: A first-principles study. Applied Physics Express (APEX). ISSN 1882-0778. 12(2), s 021002-1- 021002-5 . doi: 10.7567/1882-0786/aafa0d
Malyi, Oleksandr; Sopiha, Kostiantyn & Persson, Clas (2019). Energy, phonon, and dynamic stability criteria of two-dimensional materials. ACS Applied Materials and Interfaces. ISSN 1944-8244. . doi: 10.1021/acsami.9b01261
Malyi, Oleksandr; Sopiha, Kostiantyn & Persson, Clas (2019). Noble gas as a functional dopant in ZnO. npj Computational Materials. ISSN 2057-3960. 5 . doi: 10.1038/s41524-019-0174-3
Malyi, Oleksandr; Yeung, M. .T; Poeppelmeier, K. R.; Persson, Clas & Zunger, A (2019). Ordering in Degenerate but Gapped Transparent Conductors. Matter. ISSN 2590-2385. 1, s 280
Olsen, Vegard Skiftestad; Bazioti, Kalliopi; Baldissera, Gustavo; Azarov, Alexander; Prytz, Øystein; Persson, Clas; Svensson, Bengt Gunnar; Kuznetsov, Andrej & Vines, Lasse (2019). Effects of Substrate and Post-Deposition Annealing on Structural and Optical Properties of (ZnO)1-x(GaN)x Films. Physica status solidi. B, Basic research. ISSN 0370-1972. 256(6) . doi: 10.1002/pssb.201800529
Persson, Clas (2019). Copper-based chalcogenides for ultrathin inorganic solar cells. IEEE International Conference on Nanotechnology. ISSN 1944-9399. 2018-July . doi: 10.1109/NANO.2018.8626280
Abu Hamed, Tareq; et, al.; Berland, Kristian; Persson, Clas; et, al. & Zarbakhsh, Javad (2018). Multiscale in modelling and validation for solar photovoltaics. EPJ Photovoltaics. ISSN 2105-0716. 9 . doi: 10.1051/epjpv/2018008
Berland, Kristian & Persson, Clas (2018). Thermoelectric transport of GaAs, InP, and PbTe: Hybrid functional with kp interpolation versus scissor-corrected generalized gradient approximation. Journal of Applied Physics. ISSN 0021-8979. 123, s 205703 . doi: 10.1063/1.5030395 Full text in Research Archive.
Boström, Anders Mathias; Dou, Maofeng; Malyi, Oleksandr; Parashar, Prachi; Parsons, Drew F.; Brevik, Iver Håkon & Persson, Clas (2018). Fluid-sensitive nanoscale switching with quantum levitation controlled by α-Sn/β-Sn phase transition. Physical Review B. ISSN 2469-9950. 97:125421(12), s 1- 9 . doi: 10.1103/PhysRevB.97.125421 Full text in Research Archive.
Davydova, A; Eriksson, J; Chen, Rongzhen; Rudisch, K; Persson, Clas & Scragg, Jonathan (2018). Thio-olivine Mn2SiS4 thin films by reactive magnetron sputtering: Structural and optical properties with insights from first principles calculations. Materials & design. ISSN 0264-1275. 152, s 110- 118 . doi: 10.1016/j.matdes.2018.04.080 Full text in Research Archive.
Fiedler, Johannes; Persson, Clas; Boström, Mathias & Buhmann, Stefan Yoshi (2018). Orientational dependence of the van der Waals interactions for finite-sized particles. Journal of Physical Chemistry A. ISSN 1089-5639. 122(19), s 4663- 4669 . doi: 10.1021/acs.jpca.8b01989 Full text in Research Archive.
Grini, Sigbjørn; Ross, Nils; Persson, Clas; Platzer-Björkman, Charlotte & Vines, Lasse (2018). Low temperature incorporation of selenium in Cu2ZnSnS4: Diffusion and nucleation. Thin Solid Films. ISSN 0040-6090. 665, s 159- 163 . doi: 10.1016/j.tsf.2018.09.024
Huang, Dan; Jiang, Jing-Wen; Guo, Jin; Zhao, Yu-jun; Chen, Rongzhen & Persson, Clas (2018). General rules of the sub-band gaps in group-IV (Si, Ge, and Sn)-doped I-III-VI⁠2-type chalcopyrite compounds for intermediate band solar cell: A first-principles study. Materials Science & Engineering: B. Solid-state Materials for Advanced Technology. ISSN 0921-5107. 236-237, s 147- 152 . doi: 10.1016/j.mseb.2018.11.006
Iordanidou, Konstantina; Houssa, Michel; Kioseoglou, Joseph; Afanas’ev, Valeri; Stesmans, Andre & Persson, Clas (2018). Hole-doped 2D InSe for spintronic applications. ACS Applied Nano Materials. ISSN 2574-0970. 1(12), s 6656- 6665 . doi: acsanm.8b01476
Malyi, Oleksandr; Sopiha, Kostiantyn; Radchenko, Ihor; Wu, Ping & Persson, Clas (2018). Tailoring electronic properties of multilayer phosphorene by siliconization. Physical Chemistry, Chemical Physics - PCCP. ISSN 1463-9076. 20(3), s 2075- 2083 . doi: 10.1039/c7cp06196j Full text in Research Archive.
Sopiha, Kostiantyn; Malyi, Oleksandr; Persson, Clas & Wu, Ping (2018). Suppression of surfaces states at cubic perovskite (001) surfaces by CO2 adsorption. Physical Chemistry, Chemical Physics - PCCP. ISSN 1463-9076. 20(27), s 18828- 18836 . doi: 10.1039/c8cp02535e Full text in Research Archive.
Thiyam, Priyadarshini; Fiedler, Johannes; Buhmann, Stefan Yoshi; Persson, Clas; Brevik, Iver Håkon; Boström, Mathias & Parsons, Drew F. (2018). Ice particles sink below the water surface due to a balance of salt, van der Waals and buoyancy forces. Journal of Physical Chemistry C. ISSN 1932-7447. 122(27), s 15311- 15317 . doi: 10.1021/acs.jpcc.8b02351 Full text in Research Archive.
Thiyam, Priyadarshini; Parashar, Prachi; Shajesh, Kuloth Vayalombron; Malyi, Oleksandr; Boström, Mathias; Milton, Kimball A.; Brevik, Iver Håkon & Persson, Clas (2018). Distance-dependent sign reversal in the Casimir-Lifshitz torque. Physical Review Letters. ISSN 0031-9007. 120(13), s 1- 6 . doi: 10.1103/PhysRevLett.120.131601 Full text in Research Archive. Show summary
The Casimir-Lifshitz torque between two biaxially polarizable anisotropic planar slabs is shown to exhibit a nontrivial sign reversal in its rotational sense. The critical distance $a_c$ between the slabs that marks this reversal is characterized by the frequency $\omega_c\sim c/2a_c$ at which the in-planar polarizabilities along the two principal axes are equal. The two materials seek to align their principal axes of polarizabilities in one direction below $a_c$, while above $a_c$ their axes try to align rotated perpendicular relative to their previous minimum energy orientation. The sign reversal disappears in the nonretarded limit. Our perturbative result, derived for the case when the differences in the relative polarizabilities are small, matches excellently with the exact theory for uniaxial materials. We illustrate our results for black phosphorus and phosphorene.
Zamulko, Sergii; Berland, Kristian & Persson, Clas (2018). Optical properties of Cu2ZnSn(S(x)Se(1-x))4 by first-principles calculations. Physica Status Solidi (a) applications and materials science. ISSN 1862-6300. 215(17), s 1- 7 . doi: 10.1002/pssa.201700945 Full text in Research Archive.
Berland, Kristian & Persson, Clas (2017). Enabling accurate first-principle calculations of electronic properties with a corrected kp scheme. Computational materials science. ISSN 0927-0256. 134, s 17- 24 . doi: 10.1016/j.commatsci.2017.03.017
Boström, Mathias; Malyi, Oleksandr; Parashar, Prachi; Shajesh, Kuloth Vayalombron; Thiyam, Priyadarshini; Milton, Kimball A.; Persson, Clas; Parsons, Drew F. & Brevik, Iver Håkon (2017). Lifshitz interaction can promote ice growth at water-silica interfaces. Physical Review B. ISSN 2469-9950. 95(15) . doi: 10.1103/PhysRevB.95.155422 Full text in Research Archive.
Chen, Rongzhen & Persson, Clas (2017). Electronic and optical properties of Cu2XSnS4 (X = Be, Mg, Ca, Mn, Fe, and Ni) and the impact of native defect pairs. Journal of Applied Physics. ISSN 0021-8979. 121, s 203104 . doi: 10.1063/1.4984115 Full text in Research Archive.
Chen, Rongzhen & Persson, Clas (2017). High absorption coefficients of the CuSb(Se,Te)2 and CuBi(S,Se)2 alloys enable high-efficient 100 nm thin-film photovoltaics. EPJ Photovoltaics. ISSN 2105-0716. 8, s 85504
Chen, Rongzhen & Persson, Clas (2017). Exploring the electronic and optical properties of Cu2Sn(1-x)Ge(x)S3 and Cu2Sn(1-x)Si(x)S3 (x = 0, 0.5, and 1). Physica status solidi. B, Basic research. ISSN 0370-1972. 254, s 1700111 . doi: 10.1002/pssb.201700111 Full text in Research Archive.
Eliassen, Simen Nut Hansen; Katre, Anikta; Madsen, Georg; Persson, Clas; Løvvik, Ole Martin & Berland, Kristian (2017). Lattice thermal conductivity of TixZryHf1−x−yNiSn half-Heusler alloys calculated from first principles: Key role of nature of phonon modes. Physical Review B. ISSN 2469-9950. 95(4) . doi: 10.1103/PhysRevB.95.045202 Full text in Research Archive. Show summary
In spite of their relatively high lattice thermal conductivity κℓ, the XNiSn (X=Ti, Zr, or Hf) half-Heusler compounds are good thermoelectric materials. Previous studies have shown that κℓ can be reduced by sublattice alloying on the X site. To cast light on how the alloy composition affects κℓ, we study this system using the phonon Boltzmann-transport equation within the relaxation time approximation in conjunction with density functional theory. The effect of alloying through mass-disorder scattering is explored using the virtual crystal approximation to screen the entire ternary TixZryHf1−x−yNiSn phase diagram. The lowest lattice thermal conductivity is found for the TixHf1−xNiSn compositions; in particular, there is a shallow minimum centered at Ti0.5Hf0.5NiSn with κℓ taking values between 3.2 and 4.1 W/mK when the Ti content varies between 20% and 80%. Interestingly, the overall behavior of mass-disorder scattering in this system can only be understood from a combination of the nature of the phonon modes and the magnitude of the mass variance. Mass-disorder scattering is not effective at scattering acoustic phonons of low energy. By using a simple model of grain boundary scattering, we find that nanostructuring these compounds can scatter such phonons effectively and thus further reduce the lattice thermal conductivity; for instance, Ti0.5Hf0.5NiSn with a grain size of L=100 nm experiences a 42% reduction of κℓ compared to that of the single crystal.
Fiedler, Johannes; Thiyam, Priyadarshini; Kurumbail, Anurag; Burger, Friedrich A.; Walter, Michael; Persson, Clas; Brevik, Iver Håkon; Parsons, Drew F.; Boström, Anders Mathias & Buhmann, Stefan Yoshi (2017). Effective Polarizability Models. Journal of Physical Chemistry A. ISSN 1089-5639. 121(51), s 9742- 9751 . doi: 10.1021/acs.jpca.7b10159 Full text in Research Archive.
Grini, Sigbjørn; Ross, Nils; Sky, Thomas Neset; Persson, Clas; Platzer-Björkman, Charlotte & Vines, Lasse (2017). Secondary ion mass spectrometry as a tool to study selenium gradient in Cu2ZnSn(S,Se)4. Physica Status Solidi. C, Current topics in solid state physics. ISSN 1610-1634. 14 . doi: 10.1002/pssc.201600187
Huang, Dan; Jiang, Jing-Wen; Guo, Jin; Zhao, Yu-jun; Chen, Rongzhen & Persson, Clas (2017). Group-IV (Si, Ge, and Sn)-doped AgAlTe2 for intermediate band solar cell from first-principles study. Semiconductor Science and Technology. ISSN 0268-1242. 32(6) . doi: 10.1088/1361-6641/aa67d7 Full text in Research Archive.
Li, Shu-yi; Zamulko, Sergii; Persson, Clas; Ross, Nils; Larsen, Jes & Platzer-Björkman, Charlotte (2017). Optical properties of Cu2ZnSn(S(x)Se(1-x))4 solar absorbers: Spectroscopic ellipsometry and ab initio calculations. Applied Physics Letters. ISSN 0003-6951. 110:021905(2), s 1- 5 . doi: 10.1063/1.4973353
Malyi, Oleksandr; Sopiha, Kostiantyn; Draxl, Claudia & Persson, Clas (2017). Stability and electronic properties of phosphorene oxides: from 0-dimensional to amorphous 2-dimensional structures. Nanoscale. ISSN 2040-3364. 9(7), s 2428- 2435 . doi: 10.1039/c6nr08810d
Schrade, Matthias; Berland, Kristian; Eliassen, Simen Nut Hansen; Guzik, Matylda Natalia; Echevarria-Bonet, Cristina; Sørby, Magnus Helgerud; Jenus, Petra; Hauback, Bjørn; Tofan, Raluca; Gunnæs, Anette Eleonora; Persson, Clas; Løvvik, Ole Martin & Finstad, Terje (2017). The role of grain boundary scattering in reducing the thermal conductivity of polycrystalline XNiSn (X=Hf, Zr, Ti) half-Heusler alloys. Scientific Reports. ISSN 2045-2322. 7 . doi: 10.1038/s41598-017-14013-8 Full text in Research Archive.
Sopiha, Kostiantyn; Malyi, Oleksandr; Persson, Clas & Wu, Ping (2017). Band gap modulation of SrTiO3 upon CO2 adsorption. Physical Chemistry, Chemical Physics - PCCP. ISSN 1463-9076. 19(25), s 16629- 16637 . doi: 10.1039/c7cp01462g
Zamulko, Sergii; Chen, Rongzhen & Persson, Clas (2017). Investigation of the structural, optical and electronic properties of Cu2Zn(Sn,Si/Ge)(S/Se)4 alloys for solar cell applications. Physica status solidi. B, Basic research. ISSN 0370-1972. 254(6) . doi: 10.1002/pssb.201700084
Zhang, Yanyan; Malyi, Oleksandr; Tang, Yuxin; Wei, Jiaqi; Zhu, Zhiqiang; Xia, Huarong; Li, Wenlong; Guo, Jia; Zhou, Xinran; Chen, Zhong; Persson, Clas & Chen, Xiaodong (2017). Reducing the Charge Carrier Transport Barrier in Functionally Layer-Graded Electrodes. Angewandte Chemie International Edition. ISSN 1433-7851. 56(47), s 14847- 14852 . doi: 10.1002/anie.201707883
Malyi, Oleksandr; Boström, Mathias; Kulish, Vadym; Thiyam, Priyadarshini; Parsons, Drew F. & Persson, Clas (2016). Volume dependence of dielectric properties of amorphous SiO2. Physical Chemistry, Chemical Physics - PCCP. ISSN 1463-9076. 18(10), s 7483- 7489 . doi: 10.1039/c5cp06775h
Thiyam, Priyadarshini; Lima, Eduardo R. A.; Malyi, Oleksandr; Parsons, Drew F.; Buhmann, Stefan Yoshi; Persson, Clas & Boström, Mathias (2016). Effects of van der Waals forces and salt ions on the growth of water films on ice and the detachment of CO2 bubbles. Europhysics letters. ISSN 0295-5075. 113, s 43002 . doi: 10.1209/0295-5075/113/43002
Baldissera, Gustavo & Persson, Clas (2016). Understanding the optical properties of ZnO1−xSx and ZnO1−xSex alloys. Journal of Applied Physics. ISSN 0021-8979. 119(4) . doi: 10.1063/1.4940700 Full text in Research Archive.
Berland, Kristian; Song, Xin; Carvalho, Patricia; Persson, Clas; Finstad, Terje & Løvvik, Ole Martin (2016). Enhancement of thermoelectric properties by energy filtering: Theoretical potential and experimental reality in nanostructured ZnSb. Journal of Applied Physics. ISSN 0021-8979. 119(12) . doi: 10.1063/1.4944716 Full text in Research Archive. Show summary
Energy filtering has been suggested by many authors as a means to improve thermoelectric properties. The idea is to filter away low-energy charge carriers in order to increase Seebeck coefficient without compromising electronic conductivity. This concept was investigated in the present paper for a specific material (ZnSb) by a combination of first-principles atomic-scale calculations, Boltzmann transport theory, and experimental studies of the same system. The potential of filtering in this material was first quantified, and it was as an example found that the power factor could be enhanced by an order of magnitude when the filter barrier height was 0.5 eV. Measured values of the Hall carrier concentration in bulk ZnSb were then used to calibrate the transport calculations, and nanostructured ZnSb with average grain size around 70 nm was processed to achieve filtering as suggested previously in the literature. Various scattering mechanisms were employed in the transport calculations and compared with the measured transport properties in nanostructured ZnSb as a function of temperature. Reasonable correspondence between theory and experiment could be achieved when a combination of constant lifetime scattering and energy filtering with a 0.25 eV barrier was employed. However, the difference between bulk and nanostructured samples was not sufficient to justify the introduction of an energy filtering mechanism. The reasons for this and possibilities to achieve filtering were discussed in the paper.
Boström, Mathias; Malyi, Oleksandr; Thiyam, Priyadarshini; Berland, Kristian; Brevik, Iver Håkon; Persson, Clas & Parsons, Drew F. (2016). The influence of Lifshitz forces and gas on premelting of ice within porous materials. Europhysics letters. ISSN 0295-5075. 115(1) . doi: 10.1209/0295-5075/115/13001 Full text in Research Archive.

View all works in Cristin

Boström, Anders Mathias; Corkery, Robert; Lima, Eduardo R. A.; Malyi, Oleksandr I.; Buhmann, Stefan Yoshi; Persson, Clas; Brevik, Iver Håkon; Parsons, Drew F. & Fiedler, Johannes (2019). Ice Coatings Stabilised by Lifshitz Forces Can Induce a Size Dependent Float to Sink Transition for CO2 Gas Hydrate Clusters in Remote Water Worlds.
Berland, Kristian; Eliassen, Simen Nut Hansen; Løvvik, Ole Martin; Persson, Clas & Schrade, Matthias (2018). Computational Engineering of Thermoelectric Materials.
Boström, Mathias; Thiyam, Priydarshini; Fiedler, Johannes; Persson, Clas; Berland, Kristian; Buhmann, Stefan Yoshi; Brevik, Iver Håkon; Shajesh, K. V. & Parsons, Drew F. (2018). A habitat for life.
Fiedler, Johannes; Persson, Clas; Boström, Mathias & Buhmann, Stefan Yoshi (2018). Medium-assisted dispersion forces..
Grini, Sigbjørn; Ross, Nils; Liu, Xin; Platzer-Björkman, Charlotte; Persson, Clas & Vines, Lasse (2018). How is oxygen introduced in Cu2ZnSnS4 solar cell processing?.
Grini, Sigbjørn; Ross, Nils; Platzer-Björkman, Charlotte; Persson, Clas & Vines, Lasse (2018). Low temperature incorporation of selenium in Cu2ZnSnS4: Diffusion and nucleation.
Grini, Sigbjørn; Ross, Nils; Sopiha, Kostiantyn; Liu, Xin; Persson, Clas; Platzer-Björkman, Charlotte & Vines, Lasse (2018). Introduction of oxygen into kesterite processing.
Malyi, Oleksandr; Sopiha, Kostiantyn & Persson, Clas (2018). Tailoring electronic properties of low-dimensional P-based systems by utilizing phosphorene reactivity.
Persson, Clas (2018). Copper-based chalcogenides for ultrathin inorganic solar cells.
Persson, Clas (2018). Cu‐X-chalcogenides for ultrathin solar cells.
Sopiha, Kostiantyn; Malyi, Oleksandr; Persson, Clas & Wu, Ping (2018). Defect Compensation in SnO2: Role of Surface Oxygen Defects.
Sopiha, Kostiantyn; Malyi, Oleksandr; Persson, Clas & Wu, Ping (2018). Defect Compensation in n-type SnO2 by Oxygen Adsorption.
Thiyam, Priyadarshini; Parashar, Prachi; Shajesh, Kuloth Vayalombron; Malyi, Oleksandr; Boström, Mathias; Kimball, Milton A.; Brevik, Iver Håkon; Forsman, Jan & Persson, Clas (2018). Control of the sign and magnitude of Casimir-Lifshitz torque by material manipulation and intervening liquid medium..
Baldissera, Gustavo & Persson, Clas (2017). ZnO-GaN alloys for energy materials.
Berland, Kristian; Eliassen, Simen Nut Hansen; Schrade, Matthias; Tofan, Raluca; Guzik, Matylda Natalia; Gunnæs, Anette Eleonora; Finstad, Terje; Katre, Anikta; Madsen, Georg; Persson, Clas & Løvvik, Ole Martin (2017). Using theory to understand thermoelectric materials.
Berland, Kristian; Løvvik, Ole Martin & Persson, Clas (2017). How hybrid exchange affects thermoelectric transport properties of GaAs, PbTe, Cu2Se, and half Heuslers: Accurate grid sampling enabled with a corrected k.p scheme.
Berland, Kristian & Persson, Clas (2017). Computing accurate dielectric functions and transport properties of semiconductors with help of a new k.p based interpolation scheme.
Berland, Kristian & Persson, Clas (2017). The need for dense Brillouin zone sampling in transport and optical calculations... and how to deal with it.
Berland, Kristian; Zamulko, Sergii & Persson, Clas (2017). Comparison of hybrid functional and GGA for transport and excited-state properties of bulk semiconductors.
Berland, Kristian; Zamulko, Sergii & Persson, Clas (2017). Resolving fine features of the dielectric function: Computational issues and opportunities.
Chen, Rongzhen; Crovetto, Andrea & Persson, Clas (2017). Optimizing the Cu-Sn-S Compounds to Design Thin Solar Cells.
Chen, Rongzhen & Persson, Clas (2017). Exploring the Optical Properties of Earth-Abundant Chalcogenide Absorbers.
Chen, Rongzhen & Persson, Clas (2017). New Potential Materials for Solar Cells. Advanced Science News.
Chen, Rongzhen; Scragg, Jonathan; Platzer-Björkman, Charlotte & Persson, Clas (2017). Exploring the Optical Properties of Earth-Abundant Chalcogenide Absorbers.
Grini, Sigbjørn; Ross, Nils; Larsen, Jes; Platzer-Björkman, Charlotte; Persson, Clas & Vines, Lasse (2017). Na in Cu2ZnSn(S,Se)4 - Using sodium to improve the performance of thin film solar cells.
Grini, Sigbjørn; Ross, Nils; Platzer-Björkman, Charlotte; Persson, Clas & Vines, Lasse (2017). Sodium diffusion in Cu2ZnSnS4.
Grini, Sigbjørn; Ross, Nils; Platzer-Björkman, Charlotte; Persson, Clas & Vines, Lasse (2017). Sodium diffusion in Cu2ZnSnS4.
Guzik, Matylda N.; Schrade, Matthias; Tofan, Raluca; Berland, Kristian; Gunnæs, Anette Eleonora; Persson, Clas; Sørby, Magnus Helgerud & Hauback, Bjørn (2017). Structural Investigation of Ti1-xHfxNiySn Half-Heusler Compounds.
Iordanidou, Konstantina; Houssa, M.; Kioseoglou, J; Afanas’ev, V.; Stesmans, A. & Persson, Clas (2017). Defective and oxidized InSe monolayers.
Løvvik, Ole Martin; Shulumba, Nina; Hellman, Olle; Persson, Clas & Berland, Kristian (2017). Predicted figure-of-merit of half-Heusler alloys - importance of scattering mechanisms.
Malyi, Oleksandr; Chen, Rongzhen & Persson, Clas (2017). Tailoring electronic and optical properties of semiconductors by amorphization.
Malyi, Oleksandr; Sopiha, Kostiantyn & Persson, Clas (2017). Utilization of phosphorene reactivity to tailor electronic properties of low-dimensional P-based systems.
Persson, Clas (2017). Hydrogen decorated defects in GaN and ZnO.
Persson, Clas (2017). Optimizing copper-based chalcopyrite alloys for thin-film photovoltaics.
Persson, Clas (2017). Overview of ongoing projects in the UiO+KTH group.
Persson, Clas (2017). Phosphorene: from basic material properties to tailor-making low-dimensional structures.
Persson, Clas (2017). Tailor-making chalcopyrite alloys for 100-nm thin solar cells.
Persson, Clas (2017). Tailor-making materials for 100-nm thin inorganic solar cells.
Persson, Clas (2017). Towards ultrathin inorganic solar cells.
Sopiha, Kostiantyn; Malyi, Oleksandr; Persson, Clas & Wu, Ping (2017). Effect of CO2 Adsorption on the Work Functions of SrTiO3(001) Surfaces.
Sopiha, Kostiantyn; Malyi, Oleksandr; Persson, Clas & Wu, Ping (2017). Non-ionizing CO2 sensing with perovskite surfaces.
Thiyam, Priyadarshini; Fiedler, Johannes; Buhmann, Stefan Yoshi; Persson, Clas; Brevik, Iver; Parsons, Drew F. & Boström, Anders Mathias (2017). Formation of ice below water surface via repulsive van der Waals and double-layer forces.
Thiyam, Priyadarshini; Parashar, Prachi; Shajesh, Kuloth Vayalombron; Malyi, Oleksandr; Boström, Mathias; Milton, Kimball A.; Brevik, Iver Håkon & Persson, Clas (2017). Modeling of dielectric properties of 2D phosphorene using density functional theory (DFT) for study of long-range van der Waals interaction.
Zamulko, Sergii; Berland, Kristian; Li, Shu-yi; Platzer-Björkman, Charlotte & Persson, Clas (2017). Theoretical and experimental analysis of optical properties of Cu2ZnSn(S,Se)4solar absorbers.
Zamulko, Sergii; Chen, Rongzhen; Berland, Kristian & Persson, Clas (2017). First-principles analysis of Cu2Zn(Sn,Si/Ge)(S/Se)4 and Cu2ZnSn(S,Se)4 alloys..
Boström, Mathias; Thiyam, Priyadarshini; Brevik, Iver & Persson, Clas (2016). The influence of gas and ions on melting of ice within porous materials.
Malyi, Oleksandr; Boström, Mathias; Kulish, Vadym; Thiyam, Priyadarshini; Parsons, Drew F. & Persson, Clas (2016). Dielectric properties of amorphous SiO2 and their link with those of other SiO2 polymorphs.
Thiyam, Priyadarshini; de Almeida Lima, Eduardo; Malyi, Oleksandr; Parsons, Drew F.; Buhmann, Stefan Yoshi; Persson, Clas & Boström, Mathias (2016). Effect of Lifshitz and van der Waals forces on bubbles and ice melting.
Baldissera, Gustavo & Persson, Clas (2016). Tungsten chalcogenides for photovoltaic applications.
Berland, Kristian; Eliassen, Simen Nut Hansen; Katre, A; Madsen, Georg; Løvvik, Ole Martin & Persson, Clas (2016). Optimizing the thermoelectric properties of (TiHfZr)NiSn alloys.
Berland, Kristian; Eliassen, Simen Nut Hansen; Katre, Anikta; Madsen, Georg; Persson, Clas & Løvvik, Ole Martin (2016). How to bring down the thermal conductivity of MNiSn Half-Heuslers - a theoretical analysis.
Berland, Kristian & Persson, Clas (2016). A corrected k.p scheme for accurate electronic properties.
Berland, Kristian & Persson, Clas (2016). Enabling accurate transport calculations with a k.p-method based interpolation scheme: Applications to thermoelectric properties.
Berland, Kristian; Persson, Clas & Tomic, Stanko (2016). STSM Report: Connecting the ab initio atomistic with continuum modeling: parameterization.
Chen, Rongzhen & Persson, Clas (2016). Electronic and optical properties of thin film copper-based chalcogenide photovoltaic materials.
Chen, Rongzhen & Persson, Clas (2016). Exploring the electronic and optical properties of Cu2Sn(1-x)Ge(x)S3 and Cu2Sn(1-x)Si(x)S3 (x = 0, 0.5, and 1).
Chen, Rongzhen & Persson, Clas (2016). Exploring the optical properties of Cu-Based alloys.

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Published Feb. 1, 2011 3:05 PM - Last modified Feb. 25, 2019 12:50 PM

Clas Persson

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Clas Persson

Academic Interests

Teaching

Higher education and employment history

Cooperation

Personal Home Page

Publications

Projects

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Research groups