1. High‐Efficient Flexible Perovskite Solar Cells with Low Temperature TiO2 Layer via UV/Ozone Photo‐Annealing Treatment.
- Author
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Chu, Yinhuan, Cai, Hongkun, Huang, Like, Xing, Zhixue, Du, Yangyang, Ni, Jian, Li, Juan, and Zhang, Jianjun
- Subjects
SOLAR cells ,OZONE ,LOW temperatures ,PEROVSKITE ,ELECTRON transport ,SILICON solar cells - Abstract
A facile and low‐temperature solution processed UV/ozone process has been proposed for fabricating TiO2 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 TiO2 films with high transparency, electrical conductivity, and hydrophilicity. In addition, perovskite solar cells with the UV/ozone‐treated TiO2 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. Fully low‐temperature solution‐processed perovskite solar cells (PSCs) are fabricated using UV/ozone (UV/O3) treated TiO2 film as an electron transport layer. UV/O3 treatment increases the electrical conductivity and wettability of the TiO2 film, and therefore improves the performance of PSCs. By optimizing the processing time of UV/O3 treatment, the power conversion efficiency of the best rigid and flexible device is 11.58% and 7.33%, respectively. [ABSTRACT FROM AUTHOR]
- Published
- 2019
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