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 ZnO_xN_y 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).

The Research council of Norway's logo to the left: a symbol similar to an hour glass both a orange ring behind. 'The Research council of Norway' written in blue font to the right.

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.
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.
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

View all works in Cristin

Karlsen, Kjetil; Monakhov, Eduard; Bergum, Kristin; Vines, Lasse & Thue Jensen, Ingvild (2021). Electronic properties and dominant levels in ZnON.
Karlsen, Kjetil (2021). Solceller i Norge, en uventet, tverrfaglig kjærlighetshistorie?
Karlsen, Kjetil (2020). Solceller. Show summary
Pop.vit foredrag om solceller, hvordan utviklingen har vært, hvordan Norge kan bidra og hvordan vi kan forbedre dagens teknologi
Bergum, Kristin (2020). Tandem solar cells with novel materials.
Torgersen, Eivind & Bergum, Kristin (2020). Doble solceller kan øke effektiviteten med 50 prosent. Titan.uio.no.
Bergum, Kristin (2020). Designing materials for tandem solar cells.
Karlsen, Kjetil; Bergum, Kristin & Monakhov, Eduard (2020). ZnOxNy as a top cell absorber candidate in tandem solar cells.
Toft, Martin (2019). Materialforskarar tar i bruk nytt instrument til 20 millionar . Uniforum. ISSN 1891-5825.
Vogt, Yngve (2019). Her skal Kristin Bergum lage verdens beste solceller . Apollon : Forskningsmagasin for Universitetet i Oslo. ISSN 0803-6926.
Sødahl, Elin Dypvik; Bergum, Kristin & Vines, Lasse (2020). HiPIMS deposition and characterization of amorphous ZnOxNy for solar cell applications. Kjemisk Institutt, Universitetet i Oslo.
Zariouh, Osama; Monakhov, Eduard & Bergum, Kristin (2020). Deposition of phase-pure Cu2O by magnetron sputtering. Kjemisk Institutt, Universitetet i Oslo.