Abstract
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.
Original language | English |
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Article number | eaba2412 |
Pages (from-to) | 1-7 |
Number of pages | 8 |
Journal | Science |
Volume | 368 |
Issue number | 6497 |
DOIs | |
Publication status | Published - 19 Jun 2020 |
Keywords
- lead halide perovskites
- CH3NH3PbI3 perovskite
- thermal-decomposition
- iodide perovskite
- degradation
- efficient
- stability
- formamidinium
- design
- layer