期刊
SOLAR ENERGY MATERIALS AND SOLAR CELLS
卷 174, 期 -, 页码 566-571出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.solmat.2017.09.053
关键词
Perovskite; Methylammonium lead iodide; EXAFS; Stability; Photovoltiacs
资金
- Cultural Affairs and Mission Sector in Egypt
- Bay Area Photovoltaic Consortium, DOE [DE-EE0004946, 60965033-51077]
- NSF [DMR-1126845, CHE 1710652]
- NASA
- UCSC
- U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-AC02-76SF00515]
In this study we investigate the light and heat-induced degradation of methylammonium lead iodide (MAPbI(3)) perovskite films in an inert atmosphere to exclude the effect of oxygen and humidity. Films aged under solar intensities started to degrade above 75 degrees C, while films in the dark degraded at 95 degrees C. To investigate the temperature-induced degradation mechanism, spectroscopic techniques such as Ultraviolet-Visible (UV-Vis) absorption spectroscopy, X-Ray Diffraction (XRD), Extended X-ray Absorption Fine Structure (EXAFS), and Fourier Transform Infrared (FT-IR) were used. Results show that the films aged under light at 75 degrees C degraded to a mixture of PbI2 and metallic Pb. In contrast, films aged thermally in the dark, or with light and oxygen, degraded to PbI2 only. MAPbI(3) solar cells were aged to show the effect of the metallic lead on the charge transfer mechanism.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据