Photovoltaic devices that employ lead-halide perovskites as photoactive materials exhibit power conversion efficiencies of 22%. One of the potential routes to go beyond the current efficiencies is to extract charge carriers that carry excess energy, that is, nonrelaxed or
Bretschneider SA, Laquai F, Bonn M (2017) Trap-Free Hot Carrier Relaxation in Lead–Halide Perovskite Films. The Journal of Physical Chemistry C 121: 11201–11206. Available: http://dx.doi.org/10.1021/acs.jpcc.7b03992.
We thank Enrique Canovas, Felix Deschler, Mike Donovan, Dominik Gehrig, Ian Howard, Sapun Parekh, Hai Wang, and Stefan Weber for fruitful discussions and Jenée Cyran for a careful reading of the manuscript. S.A.B acknowledges support from the Max Planck Graduate Center and thanks Stefan Schumacher for the TOC image, Gunnar Glaser for providing wisdom, especially about scanning electron microscopy, and Ellen Backus for help with the simulations. F.L. thanks the Max-Planck-Society for previous funding of the Max Planck Research Group for Organic Optoelectronics.