Uwe Rau

TL;DR: In this article, the spectral and angular dependences of the electroluminescence of solar cells and light emitting diodes were analyzed and a rigorous proof for a reciprocity theorem was given.

TL;DR: In this article, the authors reviewed the recent achievements of high-efficiency Cu(In,Ga)Se2 heterojunction solar cells with a special focus on the understanding of the electronic transport properties of the devices.

TL;DR: In this paper, an exponential tail of localized states was incorporated into the density of states for both electrons and holes, allowing recombination to occur between free charge carriers and charge carriers trapped in these states.

TL;DR: In this article, the authors present a systematic study on the electronic transport mechanisms of thin-film solar cells and propose two transport models, namely tunneling enhanced volume recombination (TV recombination) and tunable enhanced interface recombination, which allow to explain the observed features for all devices under consideration.

TL;DR: In this article, the authors demonstrate open-circuit voltages exceeding 1.26 V for inverted planar CH3NH3PbI3 solar cells fabricated using a combination of lead acetate and PbCl2 precursors leading to smooth films and large grain sizes.