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High‐Efficient Flexible Perovskite Solar Cells with Low Temperature TiO 2 Layer via UV/Ozone Photo‐Annealing Treatment
Author(s) -
Chu Yinhuan,
Cai Hongkun,
Huang Like,
Xing Zhixue,
Du Yangyang,
Ni Jian,
Li Juan,
Zhang Jianjun
Publication year - 2019
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.201800669
Subject(s) - annealing (glass) , materials science , ozone , amorphous solid , perovskite (structure) , energy conversion efficiency , chemical engineering , optoelectronics , perovskite solar cell , composite material , chemistry , organic chemistry , engineering
A facile and low‐temperature solution processed UV/ozone process has been proposed for fabricating TiO 2 layer, making it possible to fabricate planar perovskite solar cells at low temperature. UV/ozone photo‐annealing treatment could easily eliminate the organic components, resulting in high quality amorphous TiO 2 films with high transparency, electrical conductivity, and hydrophilicity. In addition, perovskite solar cells with the UV/ozone‐treated TiO 2 electron transport layer exhibiting the best power conversion efficiency of 11.58% for rigid substrate and 7.33% for flexible substrate, respectively. The results clearly indicate that UV/ozone photo‐annealing treatment is a simple and effective process of fabricating high performance flexible perovskite solar cells.