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Vacuum-Deposited Organometallic Halide Perovskite Light-Emitting Devices

Kai-Ming Chiang, Bo-Wei Hsu, Yi-An Chang, Lin Yang, Wei-Lun Tsai, Hao-Wu Lin

ACS Appl Mater Interfaces. 2017 Nov 22;9(46):40516-40522.

PMID: 29076335

Abstract:

In this work, a sequential vacuum deposition process of bright, highly crystalline, and smooth methylammonium lead bromide and phenethylammonium lead bromide perovskite thin films are investigated and the first vacuum-deposited organometallic halide perovskite light-emitting devices (PeLEDs) are demonstrated. Exceptionally low refractive indices and extinction coefficients in the emission wavelength range are obtained for these films, which contributed to a high light out-coupling efficiency of the PeLEDs. By utilizing these perovskite thin films as emission layers, the vacuum-deposited PeLEDs exhibit a very narrow saturated green electroluminescence at 531 nm, with a spectral full width at half-maximum bandwidth of 18.6 nm, a promising brightness of up to 6200 cd/m2, a current efficiency of 1.3 cd/A, and an external quantum efficiency of 0.36%.

Chemicals Related in the Paper:

Catalog Number Product Name Structure CAS Number Price
AP53916942 Phenethylammonium bromide Phenethylammonium bromide 53916-94-2 Price
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