期刊
ADVANCED ENERGY MATERIALS
卷 5, 期 15, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/aenm.201500477
关键词
atomic force microscopy; perovskite solar cells; stability; transmission electron microscopy; X-ray photoelectron spectroscopy
类别
资金
- Bijzonder Onderzoeksfonds (BOF, Hasselt University)
- Fonds voor Wetenschappelijk Onderzoek (FWO) within Odysseus program
- Interreg project Organext
- Geconcentreerde Onderzoekacties (GOA) project Solarpaint of the University of Antwerp
- FWO project [G.0044.13N]
Organolead halide perovskites currently are the new front-runners as light absorbers in hybrid solar cells, as they combine efficiencies passing already 20% with deposition temperatures below 100 degrees C and cheap solution-based fabrication routes. Long-term stability remains a major obstacle for application on an industrial scale. Here, it is demonstrated that significant decomposition effects already occur during annealing of a methylammonium lead triiode perovskite at 85 degrees C even in inert atmosphere thus violating international standards. The observed behavior supports the view of currently used perovskite materials as soft matter systems with low formation energies, thus representing a major bottleneck for their application, especially in countries with high average temperatures. This result can trigger a broader search for new perovskite families with improved thermal stability.
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