Journal
ADVANCED ENERGY MATERIALS
Volume 7, Issue 2, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/aenm.201601433
Keywords
high orientation and crystallization; perovskite solar cells; thermal stability; thin films
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Funding
- National Natural Science Foundation of China [51273104, 91433205, 51672111]
- National Key Basic Research Program of China 973 program [2014CB260405]
- Natural Science Foundation of Hebei Province [F2015201189]
- 100 Talents Program of Hebei Province [E2014100008]
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The stability of single-crystalline/monocrystalline-like perovskite film is expected to be better than its microcrystalline counterparts. In the present work, highly orientated perovskite thin films (CH3NH3PbI3-xClx) are prepared by means of aquointermediates assisted solution process. It displays super-duper preferred-orientation along < 110 > direction that is close to the single crystal, and its diffraction intensity ratio of (110)/(310) is nearly two orders of magnitude higher in contrast to the films that prepared by traditional way. Owing to its superior performances, e.g., highly crystallized quality, stress-free inside films, longer electron lifetime, faster temporal response time, etc., the highly orientated perovskite-based solar cells accordingly allow realizing high efficiency while improving its thermal stability.
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