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J Phys Chem Lett. 2017 Jul 20;8(14):3193-3198. doi: 10.1021/acs.jpclett.7b01093. Epub 2017 Jun 29.

Methylammonium Lead Bromide Perovskite Light-Emitting Diodes by Chemical Vapor Deposition.

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Energy Materials and Surface Sciences Unit (EMSS), Okinawa Institute of Science and Technology Graduate University (OIST) , 1919-1 Tancha, Onna-son, Kunigami-gun, Okinawa 904-0495, Japan.
Center for Organic Photonics and Electronics Research (OPERA), Kyushu University , 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan.


Organo-lead-halide perovskites are promising materials for optoelectronic applications. Perovskite solar cells have reached power conversion efficiencies of over 22%, and perovskite light-emitting diodes have recently achieved over 11% external quantum efficiency. To date, most research on perovskite light-emitting diodes has focused on solution-processed films. There are many advantages of a vapor-based growth process to prepare perovskites, including ease of patterning, ability to batch process, and material compatibility. We investigated an all-vapor perovskite growth process by chemical vapor deposition and demonstrated luminance up to 560 cd/m2.

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