Di-isopropyl ether assisted crystallization of organic–inorganic perovskites for efficient and reproducible perovskite solar cells
Di-isopropyl ether assisted crystallization of organic–inorganic perovskites for efficient and reproducible perovskite solar cells
复制标题
二异丙醚辅助有机-无机钙钛矿结晶，用于高效且可重复的钙钛矿太阳能电池
DOI：
10.1039/c7nr06410a
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发表时间：
2017
期刊：
影响因子：
6.7
通讯作者：
Zheng Lan-Sun
中科院分区：
文献类型：
--
作者：
Wang Lu-Yao;Deng Lin-Long;Wang Xin;Wang Tan;Liu Hao-Ran;Dai Si-Min;Xing Zhou;Xie Su-Yuan;Huang Rong-Bin;Zheng Lan-Sun
Organic–inorganic perovskite solar cells have emerged as a promising photovoltaic technology because of their advantages such as low cost, high efficiency, and solution processability. The performance of perovskite solar cells is highly dependent on the crystallinity and morphology of the perovskite films. Herein, we report a simple, one-step anti-solvent deposition process using di-isopropyl ether as a dripping solvent to obtain extremely uniform and highly crystalline CH3NH3PbI3 perovskite films. Compared to toluene, chlorobenzene, chloroform, or diethyl ether, di-isopropyl ether has proven to be a more suitable solvent for an anti-solvent deposition process. The perovskite solar cells fabricated by the anti-solvent deposition process using di-isopropyl ether treatment exhibit an average power conversion efficiency (PCE) of 17.67 ± 0.54% and the highest PCE of 19.07%. Moreover, the higher boiling point of di-isopropyl ether makes the anti-solvent deposition process more tolerant to elevated ambient temperature, which can be carried out at ambient temperatures up to 40 °C. Our results demonstrate that di-isopropyl ether is an excellent dripping solvent in the anti-solvent deposition process for efficient and reproducible perovskite solar cells.
