Journal Article Photovoltaic Performance of Perovskite Solar Cells with Different Grain Sizes.

Kim, Hyung Do  ,  Ohkita, Hideo  ,  Benten, Hiroaki  ,  Ito, Shinzaburo

28 ( 5 )  , pp.917 - 922 , 2015-12-07 , wiley
ペロブスカイト太陽電池の不安定性を改善、理論限界への設計指針を発見 -新型太陽電池のポテンシャルを見極める-. 京都大学プレスリリース. 2015-12-08.
Article first published online: 7 DEC 2015
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.

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