F
Fabian Pianezzi
Researcher at Swiss Federal Laboratories for Materials Science and Technology
Publications - 59
Citations - 4450
Fabian Pianezzi is an academic researcher from Swiss Federal Laboratories for Materials Science and Technology. The author has contributed to research in topics: Copper indium gallium selenide solar cells & Solar cell. The author has an hindex of 26, co-authored 59 publications receiving 3924 citations. Previous affiliations of Fabian Pianezzi include École Polytechnique Fédérale de Lausanne.
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Journal ArticleDOI
Potassium-induced surface modification of Cu(In,Ga)Se2 thin films for high-efficiency solar cells
Adrian Chirila,Patrick Reinhard,Fabian Pianezzi,P. Bloesch,Alexander R. Uhl,C.M. Fella,Lukas Kranz,Debora Keller,Christina Gretener,Harald Hagendorfer,Dominik Jaeger,Rolf Erni,Shiro Nishiwaki,Stephan Buecheler,Ayodhya N. Tiwari +14 more
TL;DR: A new sequential post-deposition treatment of the CIGS layer with sodium and potassium fluoride is presented that enables fabrication of flexible photovoltaic devices with a remarkable conversion efficiency due to modified interface properties and mitigation of optical losses in the CdS buffer layer.
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Highly efficient Cu(In,Ga)Se2 solar cells grown on flexible polymer films
Adrian Chirila,Stephan Buecheler,Fabian Pianezzi,P. Bloesch,Christina Gretener,Alexander R. Uhl,C.M. Fella,Lukas Kranz,Julian Perrenoud,S. Seyrling,R. Verma,Shiro Nishiwaki,Yaroslav E. Romanyuk,G. Bilger,Ayodhya N. Tiwari +14 more
TL;DR: A strong composition gradient in the absorber layer is identified as the main reason for inferior performance and it is shown that, by adjusting it appropriately, very high efficiencies can be obtained.
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Unveiling the effects of post-deposition treatment with different alkaline elements on the electronic properties of CIGS thin film solar cells.
Fabian Pianezzi,Patrick Reinhard,Adrian Chirila,Benjamin Bissig,Shiro Nishiwaki,Stephan Buecheler,Ayodhya N. Tiwari +6 more
TL;DR: It is concluded that a model based on a secondary diode at the CIGS/Mo interface can best explain these features such as the position of the N1 signal in admittance spectroscopy and the roll-over of the J-V curve at low temperature.
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Doping of polycrystalline CdTe for high-efficiency solar cells on flexible metal foil
Lukas Kranz,Christina Gretener,Julian Perrenoud,Rafael Schmitt,Fabian Pianezzi,Fabio La Mattina,P. Blösch,Erik Cheah,Adrian Chirila,C.M. Fella,Harald Hagendorfer,Timo Jäger,Shiro Nishiwaki,Alexander R. Uhl,Stephan Buecheler,Ayodhya N. Tiwari +15 more
TL;DR: This work introduces an innovative concept for the controlled doping of the CdTe layer in the inverted device structure by means of evaporation of sub-monolayer amounts of Cu and subsequent annealing, which enables breakthrough efficiencies up to 13.6%.
Journal ArticleDOI
Review of Progress Toward 20% Efficiency Flexible CIGS Solar Cells and Manufacturing Issues of Solar Modules
Patrick Reinhard,Adrian Chirila,P. Blösch,Fabian Pianezzi,Shiro Nishiwaki,Stephan Buechelers,Ayodhya N. Tiwari +6 more
TL;DR: In this article, the main characteristics of substrate materials are discussed, addressing the main advantages of thin-film technology for low-cost solar electricity by yielding comparable efficiencies to polycrystalline Si wafer-based cells.