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P‐100: Enhanced Luminescence by Multi ‘A’ Site Cations Strategy and Potassium Doping for Solution‐Processed Perovskite Light‐Emitting Diodes
Author(s) -
Wu Yongwei,
Hu Zhiping,
Xin Zhilong,
Yang Guang,
Jiang Pei,
Duan Miao,
Yin Yongming,
He Bo,
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.14236
Subject(s) - perovskite (structure) , formamidinium , luminescence , doping , light emitting diode , diode , potassium , materials science , fabrication , brightness , optoelectronics , inorganic chemistry , chemistry , optics , crystallography , physics , metallurgy , medicine , alternative medicine , pathology
Normally, two‐dimensional (2D) perovskite with a formula of L 2 A n‐1 M n X 3n+1 contain a mono cation (e.g., methylammonium (MA + ) or formamidinium (FA + )). In this work, an approach, which emphasizes ‘A’ site cations mixing and potassium doping, was demonstrated to obtain highly luminescent 2D perovskites (PLQY up to 83%). The according perovskite light‐emitting diodes (PeLEDs), which were fabrication via all‐solution processing method, reaches a brightness of 2200 cd/m 2 , and a maximum current efficiency of 8.6 cd/A.