New MAterials for Tandem Solar cells (MATS)
About the project
The main goal of MATS is to investigate fundamental properties and photovoltaic diodes based on ZnOxNy thin films. These diodes are optimized for use as a top cell in a silicon-based tandem solar cell.
Methods
Depostion optimization
Optimal deposition parameters for both undoped and doped ZnOn thin films are studied using RF, DC and HiPIMS magnetron sputtering. The aim is to produce samples with high mobility, carrier concentrations low enough for non-abrupt pn junctions and an optical bandgap of 1.7eV.
Realizing and optimizing of ZnON pn-junctions, using both Si and higher bandgap-materials.
Characterization
Structural, chemical, optical and electrical characterization are utilized to understand both macroscopic and microscopic processes. These include, but are not limited to Hall, XRD, IV, CV, DLTS, TAS, EDS, UV-NIR-VIS.
Simulation
Simulate the effect of various film parameters and various emitter options on overall solar cell performance and understand underlying physical processes.
Public outreach
Article in Titan: Doble solceller kan øke effektiviteten med 50 prosent
Project duration
2019 - 2022
Financing
The project is financed by the Research Council of Norway through the Frinatek program. (no. 288596).
Publications
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Olsen, Vegard Skiftestad; Øversjøen, Vetle; Gogova-Petrova, Daniela; Pecz, Bela; Galeckas, Augustinas & Borgersen, Jon Arthur [Show all 9 contributors for this article] (2021). ZnSnN2 in Real Space and k-Space: Lattice Constants, Dislocation Density, and Optical Band Gap. Advanced Optical Materials. ISSN 2195-1071. doi: 10.1002/adom.202100015.
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Nyborg, Martin; Karlsen, Kjetil; Bergum, Kristin & Monakhov, Eduard (2021). Dominant acceptors in Li doped, magnetron deposited Cu2O films. Materials Research Express. ISSN 2053-1591. 8(12), p. 1–8. doi: 10.1088/2053-1591/ac3e24. Full text in Research Archive
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Nyborg, Martin; Azarov, Alexander; Bergum, Kristin & Monakhov, Eduard (2021). Deposition and characterization of lithium doped direct current magnetron sputtered Cu2O films. Thin Solid Films. ISSN 0040-6090. 722(31), p. 1–5. doi: 10.1016/j.tsf.2021.138573. Full text in Research Archive
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Kumar, Raj; Bergum, Kristin; Riise, Heine Nygard; Monakhov, Eduard; Galeckas, Augustinas & Svensson, Bengt Gunnar (2020). Impact of post annealing and hydrogen implantation on functional properties of Cu2O thin films for photovoltaic applications. Journal of Alloys and Compounds. ISSN 0925-8388. 825(5), p. 1–8. doi: 10.1016/j.jallcom.2020.153982. Full text in Research Archive
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Bergum, Kristin; Selj, Josefine Helene Krogh & Melteig, Elina (2022). Glemmer Norge sola når vi snakker om fornybar energi? [Internet]. Universitetsplassen podcast for UiO, ep 85.
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Karlsen, Kjetil; Monakhov, Eduard; Bergum, Kristin; Vines, Lasse & Thue Jensen, Ingvild (2021). Electronic properties and dominant levels in ZnON.
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Karlsen, Kjetil (2021). Solceller i Norge, en uventet, tverrfaglig kjærlighetshistorie?
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Bergum, Kristin & Aarmo, Johannes (2021). Solceller. [Radio]. Radio Trøndelag.
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Bergum, Kristin & Vogt, Yngve (2021). Kan hente ut 50 prosent mer strøm fra solceller. [Journal]. Apollon.
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Torgersen, Eivind & Bergum, Kristin (2020). Doble solceller kan øke effektiviteten med 50 prosent. Titan.uio.no.
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Karlsen, Kjetil; Bergum, Kristin & Monakhov, Eduard (2020). ZnOxNy as a top cell absorber candidate in tandem solar cells.
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Bergum, Kristin (2020). Designing materials for tandem solar cells.
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Bergum, Kristin (2020). Tandem solar cells with novel materials.
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Toft, Martin (2019). Materialforskarar tar i bruk nytt instrument til 20 millionar . Uniforum. ISSN 1891-5825.
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Vogt, Yngve (2019). Her skal Kristin Bergum lage verdens beste solceller . Apollon : Forskningsmagasin for Universitetet i Oslo. ISSN 0803-6926.
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Zariouh, Osama; Monakhov, Eduard & Bergum, Kristin (2020). Deposition of phase-pure Cu2O by magnetron sputtering. Kjemisk Institutt, Universitetet i Oslo.
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Sødahl, Elin Dypvik; Bergum, Kristin & Vines, Lasse (2020). HiPIMS deposition and characterization of amorphous ZnOxNy for solar cell applications. Kjemisk Institutt, Universitetet i Oslo.