Premium
P‐106: Highly Luminescent Blue Light‐Emitting Diodes Based on Quasi‐2D Multi‐Cation Perovskites
Author(s) -
Wu Yongwei,
Feng Zhengyu,
Yang Guang,
Jiang Pei,
He Bo,
Duan Miao,
Yin Yongming,
Chen Shujhih,
Li Dongze,
Zhou Hang,
Zhang Xin,
Zhang Shengdong
Publication year - 2020
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.14240
Subject(s) - formamidinium , perovskite (structure) , photoluminescence , luminescence , materials science , quantum yield , optoelectronics , diode , quantum efficiency , brightness , thin film , light emitting diode , yield (engineering) , nanotechnology , optics , chemistry , crystallography , physics , fluorescence , composite material
Quasi‐2D perovskites, typically with a standard formula of L 2 A n‐1 M n X 3n+1 , have recently attracted significant attention due to their promising optoelectronic properties. Normally, they contain a mono cation (e.g., butylammonium (BA + ) or phenylethylammonium (PEA + ) for “L” and methylammonium (MA + ) or formamidinium (FA + ) for “A”). In this work, multiple cation‐substitution strategy was used to improve the luminescence and emission efficiency of perovskite thin films. As a result, a smooth, compact surface morphology of blue emission perovskite thin films was achieved, with a high photoluminescence quantum yield of 53%. Finally, the corresponding perovskite light‐emitting diodes (PeLEDs) reaches a brightness of 220 cd/m 2 , and a maximum external quantum efficiency of 0.83%.
Accelerating Research
Robert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom
Address
John Eccles HouseRobert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom