Single-graded CIGS with narrow bandgap for tandem solar cells

by Thomas Feurer, Benjamin Bissig, Thomas P. Weiss, Romain Carron, Enrico Avancini, Johannes Löckinger, Stephan Buecheler, Ayodhya N. Tiwari
Published 2018-12-01

Time-resolved photoluminescence on double graded Cu(In,Ga)Se2 – Impact of front surface recombination and its temperature dependence

by Thomas Paul Weiss, Romain Carron, Max H. Wolter, Johannes Löckinger, Enrico Avancini, Susanne Siebentritt, Stephan Buecheler, Ayodhya N. Tiwari
Published 2019-12-01

On the origin of open-circuit voltage losses in flexible n-i-p perovskite solar cells

by Stefano Pisoni, Martin Stolterfoht, Johannes Löckinger, Thierry Moser, Yan Jiang, Pietro Caprioglio, Dieter Neher, Stephan Buecheler, Ayodhya N. Tiwari
Published 2019-12-01