articleScienceMay 21, 2020Closed access

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

UNSW Sydney · ARC Centre of Excellence in Advanced Molecular Imaging · +5 more institutions

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Abstract

Perovskite decomposition in detail Solar cells are subject to heating when operating in sunlight, and the organic components of hybrid perovskite solar cells, especially the commonly used methylammonium cation, can undergo thermal decomposition. Encapsulation can limit decomposition by bringing such reactions to equilibrium and can prevent exposure to damaging ambient moisture. Shi et al. examined several encapsulation schemes for perovskite films and devices by probing volatile products with gas chromatography–mass spectrometry (see the Perspective by Juarez-Perez and Haro). Pressure-tight polymer/glass stack encapsulation was effective in suppressing gas transfer and allowed solar cells containing…

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