| Literature DB >> 26639125 |
Hyung Do Kim1, Hideo Ohkita1,2, Hiroaki Benten1, Shinzaburo Ito1.
Abstract
Perovskite solar cells exhibit improved photovoltaic parameters with increasing perovskite grain size. The larger photocurrent is due to the enhanced absorption efficiency for thicker perovskite layers. The larger open-circuit voltage (VOC ) is ascribed to the reduced trap-assisted recombination for the larger grains. As a result, the power conversion efficiency exceeds 19% at best. Further improvement in VOC would be possible if the trap density were reduced.Entities:
Keywords: direct recombination; grain sizes; halide perovskites; open-circuit voltage; trap-assisted SRH recombination
Year: 2015 PMID： 26639125 DOI： 10.1002/adma.201504144
Source DB: PubMed Journal: Adv Mater ISSN： 0935-9648 Impact factor: 30.849