P‐9.2: Role of interlayers in inorganic perovskite thin films LEDs | Zendy

Choi Won-Chul | Zendy; Kanwat Anil | Zendy; Moyen Eric | Zendy; Jang Jin | Zendy

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P‐9.2: Role of interlayers in inorganic perovskite thin films LEDs

Author(s) -

Choi Won-Chul,

Kanwat Anil,

Moyen Eric,

Jang Jin

Publication year - 2019

Publication title -

sid symposium digest of technical papers

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.351

H-Index - 44

eISSN - 2168-0159

pISSN - 0097-966X

DOI - 10.1002/sdtp.13671

Subject(s) - light emitting diode , luminescence , perovskite (structure) , materials science , thin film , oxide , quenching (fluorescence) , optoelectronics , diode , exciton , photoluminescence , nanotechnology , fluorescence , chemistry , optics , crystallography , metallurgy , physics , quantum mechanics

Here, we report on the reduction of the exciton quenching in inorganic perovskite thin films based LEDs. Using a poly (ethylene oxide) (PEO) interlayer between the perovskite film and the electron transport layer (ETL) results in a 5‐fold improvement of the photo‐luminescence (PL) intensity. Without the interlayer, LEDs do not turn on, while when using an interlayer those exhibit a maximum current efficiency (CE) of 0.8 cd/A with a maximum luminescence (L max ) of 1300 cd/m 2 . Moreover, after optimizing thickness of the ETL, moreover, the inorganic PeLEDs exhibit a CE of 7.7 cd/A and a L max of 11,300 cd/m 2 .

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