Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 54, Issue 33, Pages 9705-9709Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201504379
Keywords
defect healing; methylamine; perovskite phases; photovoltaics; thin film
Categories
Funding
- Chinese National Natural Science Foundation [51202266]
- Natural Science Foundation of Shandong Province [ZR2013FZ001]
- Youth Innovation Promotion Association of CAS [2015167]
- U.S. National Science Foundation [DMR-1305913]
Ask authors/readers for more resources
We report herein the discovery of methylamine (CH3NH2) induced defect-healing (MIDH) of CH3NH3PbI3 perovskite thin films based on their ultrafast (seconds), reversible chemical reaction with CH3NH2 gas at room temperature. The key to this healing behavior is the formation and spreading of an intermediate CH(3)NH(3)PbI(3)xCH(3)NH(2) liquid phase during this unusual perovskite-gas interaction. We demonstrate the versatility and scalability of the MIDH process, and show dramatic enhancement in the performance of perovskite solar cells (PSCs) with MIDH. This study represents a new direction in the formation of defect-free films of hybrid perovskites.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available