Gas chromatography–mass spectrometry analyses of encapsulated stable perovskite solar cells

作者：Lei Shi, Martin P. Bucknall, Trevor L. Young, Meng Zhang, Long Hu, Jueming Bing, Da Seul Lee, Jincheol Kim, Tom Wu, Noboru Takamure, David R. McKenzie, Shujuan Huang, Martin A. Green, Anita Ho‐Baillie · 发表于：Science · 年份：2020 · DOI：10.1126/science.aba2412 · 被引用次数：491 · 研究领域：Perovskite Materials and Applications、Conducting polymers and applications、Solid-state spectroscopy and crystallography

Although perovskite solar cells have produced remarkable energy conversion efficiencies, they cannot become commercially viable without improvements in durability. We used gas chromatography-mass spectrometry (GC-MS) to reveal signature volatile products of the decomposition of organic hybrid perovskites under thermal stress. In addition, we were able to use GC-MS to confirm that a low-cost polymer/glass stack encapsulation is effective in suppressing such outgassing. Using such an encapsulation scheme, we produced multi-cation, multi-halide perovskite solar cells containing methylammonium that exceed the requirements of the International Electrotechnical Commission 61215:2016 standard by surviving more than 1800 hours of the Damp Heat test and 75 cycles of the Humidity Freeze test.