Open AccessStrategies to Fabricate Flexible SnO2 Based Perovskite Solar Cells Using Pre-Crystallized SnO2
Author(s) -
Detao Liu,
Hao Chen,
Yameen Ahmed,
Shibin Li
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1346/1/012036
Subject(s) - materials science , annealing (glass) , energy conversion efficiency , optoelectronics , perovskite (structure) , anode , photovoltaic system , crystallization , electrode , nanotechnology , composite material , chemical engineering , electrical engineering , chemistry , engineering
Perovskite solar cells (PSCs) have attracted much attention since the first report. Flexible PSCs are one of the important development orientations due to its light weight. However, a low temperature process is essential to fabricate the flexible PSCs due to the deformation of the plastic substrate. Here, the pre-crystallization SnO 2 colloids have been used to deposit the electron transport layer of flexible PSCs. The photovoltaic performance of flexible PSCs has been optimized through controlling the annealing temperature and SnO 2 thickness. A moderate annealing temperature reduces the deformation of flexible substrates and protects the conductive layer. A SnO 2 film with a suitable thickness not only blocks the direct contact between perovskite and electrode, but also transports the electron from perovskite to anode efficiently. As a result, the power conversion efficiency of the champion PSCs has been improved to 11.61 %.