https://scholars.lib.ntu.edu.tw/handle/123456789/575893
標題: | In Situ Identification of Photo- and Moisture-Dependent Phase Evolution of Perovskite Solar Cells | 作者: | Chen B.-A Lin, J.-T. Suen, N.-T. Tsao, C.-W. Chu, T.-C. Hsu, Y.-Y. Chan, T.-S. Chan, Y.-T. Yang, J.-S. Chiu, C.-W. HAO MING CHEN YI-TSU CHAN Yang, J.-S. |
關鍵字: | Degradation; Iodine compounds; Lead compounds; Moisture; Perovskite; Perovskite solar cells; Photodegradation; Solar power generation; X ray absorption; Decomposition products; Degradation products; Direct observations; In-situ X-ray absorption spectroscopy; In-situ X-ray diffraction; Operating condition; Perovskite layers; Photovoltaic performance; Solar cells | 公開日期: | 2017 | 卷: | 2 | 期: | 2 | 起(迄)頁: | 342-348 | 來源出版物: | ACS Energy Letters | 摘要: | Photovoltaic performance of a perovskite solar cell is observed to decrease with increasing humidity, which might be attributed to the formation of hydrated intermediates leading to a decrease in extraction of photocarriers. However, direct evidence of the interplay between the perovskite layer and the photovoltaic performance under operating conditions (consecutive illumination) has not yet been reported. Herein, we investigated the degradation of perovskite solar cells under operating situations through in situ X-ray diffraction and in situ X-ray absorption spectroscopies, which revealed that lead hydroxide iodide (PbIOH), a new phase that has not previously been identified as the degradation product of perovskite solar cells, was formed as an end decomposition product inside the cell. The formation of PbIOH could break the interface inside and be the key reason behind the problem of reduced cell life. This work illustrates that in operando direct observation of the photo- and moisture-induced effects can provide needed insights toward realizing stable perovskite solar cells. ? 2017 American Chemical Society. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85026809999&doi=10.1021%2facsenergylett.6b00698&partnerID=40&md5=b549310fa5a5f56c6d22b0f479224202 https://scholars.lib.ntu.edu.tw/handle/123456789/575893 |
ISSN: | 23808195 | DOI: | 10.1021/acsenergylett.6b00698 | SDG/關鍵字: | Degradation; Iodine compounds; Lead compounds; Moisture; Perovskite; Perovskite solar cells; Photodegradation; Solar power generation; X ray absorption; Decomposition products; Degradation products; Direct observations; In-situ X-ray absorption spectroscopy; In-situ X-ray diffraction; Operating condition; Perovskite layers; Photovoltaic performance; Solar cells |
顯示於: | 化學系 |
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