PbICl: A new precursor solution for efficient planar perovskite solar cell by vapor-assisted solution process
PbICl: A new precursor solution for efficient planar perovskite solar cell by vapor-assisted solution process
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PbICl:通过蒸汽辅助溶液法制备高效平面钙钛矿太阳能电池的新前驱体溶液
DOI:
10.1016/j.apsusc.2015.09.254
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发表时间:
2015-12
影响因子:
6.7
通讯作者:
Chengwu Shi
中科院分区:
文献类型:
--
作者:
Ni Wu;Chengwu Shi
In this paper, a new precursor solution of PbICl is successfully prepared by adding PbCl2powder into the DMF solution of PbI2at room temperature with the molar ratio of PbCl2and PbI2at 1:1 and demonstrated for efficient planar perovskite solar cell by vapor-assisted solution process for the first time. The results reveal that the solubility of PbCl2in DMF is dramatically improved by the formation of PbICl and the resulting PbICl thin film with low crystallinity and porous morphology can be easily converted to CH3NH3PbI3−xClxthin film without any lead halide residuals by the treatment of CH3NH3I vapor at 150 °C in air. The planar perovskite solar cells based on the 0.8 M PbICl precursor solution exhibit the highest photovoltaic conversion efficiency of 11.11% along with an open-circuit voltage of 0.93 V, a short-circuit photocurrent density of 17.31 mA cm−2and a fill factor of 0.69.
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