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Low-temperature (75 °C) solid-state reaction enhanced by less-crystallized nanoporous PbI2films for efficient CH3NH3PbI3perovskite solar cells
Zheng, Huifeng1,2; Liu, Yangqiao1,3; Sun, Jing1
2017
发表期刊Applied Surface Science
ISSN01694332
卷号405页码:412-419
摘要Organohalide perovskite films are usually prepared with the solid-state reaction at a high temperature ≥100 °C, which causes the increase of non-radiative defects and decomposition of perovskite films. Here, we demonstrate it's feasible to prepare high-quality perovskite films with the solid-state reaction method even at a temperature of 75 °C, when enhanced by less-crystallized nanoporous PbI2(ln-PbI2) films. The replacement of compact PbI2(c-PbI2) by ln-PbI2, results in a significant improvement of crystallinity of perovskite films, besides the elimination of remnant PbI2. As a result, ln-PbI2based perovskite solar cells display much higher power conversion efficiency (PCE) and better stability. Moreover, annealing duration was found to be critical for high PCE and was optimized as 60 min. Finally, with the optimal process, the champion device displayed a PCE of 13.8% and the average PCE reached 10.1% with a satisfactory deviation. Furthermore, we found annealing at high temperature (140 °C) led to a lower PCE compared with that annealed at 75 °C, because non-radiative defects increased significantly during high-temperature annealing. This work may open up a promising avenue for preparing high-quality perovskite films with the low-temperature solid-state reaction method, which is desirable for real application. © 2017 Elsevier B.V.
DOI10.1016/j.apsusc.2017.02.057
EI入藏号20170803372885
EI主题词Iodine compounds
EI分类号482.2 Minerals - 537.1 Heat Treatment Processes - 641.1 Thermodynamics - 702.3 Solar Cells - 802.2 Chemical Reactions - 951 Materials Science
引用统计
被引频次:5[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.sic.ac.cn/handle/331005/25410
专题中国科学院上海硅酸盐研究所
作者单位1.State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai; 200050, China;
2.University of Chinese Academy of Sciences, 19 Yuquan Road, Beijing; 100049, China;
3.Suzhou Institute of SICCAS (Shanghai Institute of Ceramics, Chinese Academy of Sciences), 238 North Changchun Road, Taicang; Jiangsu Province; 215499, China
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Zheng, Huifeng,Liu, Yangqiao,Sun, Jing. Low-temperature (75 °C) solid-state reaction enhanced by less-crystallized nanoporous PbI2films for efficient CH3NH3PbI3perovskite solar cells[J]. Applied Surface Science,2017,405:412-419.
APA Zheng, Huifeng,Liu, Yangqiao,&Sun, Jing.(2017).Low-temperature (75 °C) solid-state reaction enhanced by less-crystallized nanoporous PbI2films for efficient CH3NH3PbI3perovskite solar cells.Applied Surface Science,405,412-419.
MLA Zheng, Huifeng,et al."Low-temperature (75 °C) solid-state reaction enhanced by less-crystallized nanoporous PbI2films for efficient CH3NH3PbI3perovskite solar cells".Applied Surface Science 405(2017):412-419.
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