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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
Source PublicationApplied Surface Science
ISSN01694332
Volume405Pages:412-419
AbstractOrganohalide 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 Accession Number20170803372885
EI KeywordsIodine compounds
EI Classification Number482.2 Minerals - 537.1 Heat Treatment Processes - 641.1 Thermodynamics - 702.3 Solar Cells - 802.2 Chemical Reactions - 951 Materials Science
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Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/25410
Collection中国科学院上海硅酸盐研究所
Affiliation1.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
Recommended Citation
GB/T 7714
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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