https://scholars.lib.ntu.edu.tw/handle/123456789/577240
標題: | Mild water intake orients crystal formation imparting high tolerance on unencapsulated halide perovskite solar cells | 作者: | Huang H.-H Ma Z Strzalka J Ren Y Lin K.-F Wang L Zhou H Jiang Z Chen W. LEE-YIH WANG |
關鍵字: | in situ GIWAXS; long-term stability; perovskite photovoltaic; water incorporation | 公開日期: | 2021 | 卷: | 2 | 期: | 4 | 來源出版物: | Cell Reports Physical Science | 摘要: | The irreversible phase transition by water incorporation, along with thermal decomposition, has long been thought to be the dominant degradation pathway to deteriorate electronic and optoelectronic properties of perovskite devices. However, comprehensive characterization and insightful understanding of beneficial effect of water incorporation remains scarce. Here, we capture the phase transformation of perovskite in situ from its precursor stage to the final film upon thermal annealing as a function of relative humidity (RH) by grazing-incident wide-angle X-ray scattering. Quantitative structural analyses show that a moderate water content (RH 40%) enhances the texture orientation of the perovskite. A consequence of the guided water-incorporated treatment is that the unencapsulated device, without any sophisticated instability-mitigation approaches, exhibits excellent tolerance to long-term, light soaking and high-temperature aging, retaining more than 80% of the peak power-conversion efficiency under constant 1-sun illumination or heating at 65°C for more than 1,000 h, respectively. ? 2021 The Author(s) |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85104393919&doi=10.1016%2fj.xcrp.2021.100395&partnerID=40&md5=bb96e9c5e91234e3d05120058b5e03a1 https://scholars.lib.ntu.edu.tw/handle/123456789/577240 |
ISSN: | 26663864 | DOI: | 10.1016/j.xcrp.2021.100395 |
顯示於: | 凝態科學研究中心 |
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