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- Title
Green and sky blue perovskite light-emitting devices with a diamine additive.
- Authors
He, Lihong; Xiao, Zewu; Yang, Xiaoli; Wu, Yanting; Lian, Yajun; Peng, Xuefeng; Yang, Xiaohui
- Abstract
Low-dimensional perovskite materials are gaining broad interest for the development of high-performance optoelectronic devices due to their improved stability and rich compositions. Herein, we investigate the surface morphology, crystal structure, photo-physics, and electroluminescence properties of 1,4-diaminobutane hydrobromide (BDADBr)-derived quasi-two-dimensional perovskites. PL maximum is blue-shifted by 30–40 nm, and the photoluminescence quantum yield, photo-stability, and environmental stability of perovskite materials are enhanced upon the addition of BDADBr. Incorporation of a proper amount of polyethylene oxide leads to a two–threefold increase in the maximum EQEs of related green and sky blue light-emitting devices.
- Subjects
POLYETHYLENE oxide; PEROVSKITE; OPTOELECTRONIC devices; LEAD oxides; SURFACE morphology; CRYSTAL structure
- Publication
Journal of Materials Science, 2020, Vol 55, Issue 18, p7691
- ISSN
0022-2461
- Publication type
Article
- DOI
10.1007/s10853-020-04553-2