Premium
Effect of TiO 2 Surface Treatment on the Current–Voltage Hysteresis of Planar‐Structure Perovskite Solar Cells Prepared on Rough and Flat Fluorine‐Doped Tin Oxide Substrates
Author(s) -
Cojocaru Ludmila,
Uchida Satoshi,
Jayaweera Piyankarage V. V.,
Kaneko Shoji,
Wang Haibin,
Nakazaki Jotaro,
Kubo Takaya,
Segawa Hiroshi
Publication year - 2017
Publication title -
energy technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.91
H-Index - 44
eISSN - 2194-4296
pISSN - 2194-4288
DOI - 10.1002/ente.201700308
Subject(s) - tin oxide , materials science , hysteresis , doping , perovskite (structure) , energy conversion efficiency , chemical engineering , layer (electronics) , oxide , tin , rough surface , nanotechnology , analytical chemistry (journal) , optoelectronics , composite material , chemistry , metallurgy , condensed matter physics , organic chemistry , physics , engineering
Herein, we studied the effect of surface treatment of compact TiO 2 layer by vacuum ultraviolet (VUV) light and by TiCl 4 on the I – V hysteresis of perovskite solar cells prepared on fluorine‐doped tin oxide (FTO) substrates with two different surface roughnesses. Initially, the cells prepared on flat FTO substrates show better results than cells prepared on rough FTO, with slightly higher power conversion efficiency (PCE) and less hysteresis in the I – V curves. Treatment of TiO 2 prepared on flat FTO has no effect on the I – V hysteresis because of better contact between TiO 2 /CH 3 NH 3 PbI 3 layers. Treatment of TiO 2 layer on rough FTO has a positive effect on the PCE and I – V hysteresis and stability.