U
Uwe Zimmermann
Researcher at Uppsala University
Publications - 31
Citations - 948
Uwe Zimmermann is an academic researcher from Uppsala University. The author has contributed to research in topics: Copper indium gallium selenide solar cells & Solar cell. The author has an hindex of 17, co-authored 31 publications receiving 861 citations.
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Journal ArticleDOI
Inline Cu(In,Ga)Se $_{2}$ Co-evaporation for High-Efficiency Solar Cells and Modules
Johan Lindahl,Uwe Zimmermann,Piotr Szaniawski,Tobias Törndahl,Adam Hultqvist,Pedro M. P. Salomé,Charlotte Platzer-Björkman,Marika Edoff +7 more
TL;DR: In this paper, the co-evaporation of Cu(In,Ga)Se2 (CIGS) in an inline single-stage process is used to fabricate solar cell devices with up to 18.6% conversion efficiency using a CdS buffer layer and 18.2% using a Zn1-xSnxOy Cd-free buffer layer.
Journal ArticleDOI
Laser patterning of P2 interconnect via in thin-film CIGS PV modules
TL;DR: The use of laser scribed Cu(In,Ga)Se2 as a high-speed and low-stress alternative to the standard mechanical scribing has been investigated for thin-film PV modules on glass substrates as discussed by the authors.
Journal ArticleDOI
Baseline model of graded-absorber Cu(In,Ga)Se2 solar cells applied to cells with Zn1 − xMgxO buffer layers
TL;DR: In this article, a baseline parameter set for electrical modeling of Cu(In,Ga)Se2 solar cells with compositionally graded absorber and CdS buffer layer is established.
Journal ArticleDOI
Effect of gallium grading in Cu(In,Ga)Se2 solar-cell absorbers produced by multi-stage coevaporation
TL;DR: In this paper, the authors investigate the effect of evaporation profiles on the bandgap of thin films grown in multi-stage coevaporation processes and solar cells fabricated from such absorbers.
Journal ArticleDOI
A comparison between thin film solar cells made from co‐evaporated CuIn1‐xGaxSe2 using a one‐stage process versus a three‐stage process
Pedro M. P. Salomé,Viktor Fjällström,Piotr Szaniawski,Joaquim P. Leitão,Adam Hultqvist,Paulo Fernandes,Paulo Fernandes,Jennifer P. Teixeira,Bruno P. Falcão,Uwe Zimmermann,António F. da Cunha,Marika Edoff +11 more
TL;DR: In this article, a comparison between solar cells prepared with the three-stage process and a one-stage/in-line process with the same composition, thickness, and solar cell stack is made.