Premium
Inkjet Printing Matrix Perovskite Quantum Dot Light‐Emitting Devices
Author(s) -
Li Danyang,
Wang Junjie,
Li Miaozi,
Xie Gancheng,
Guo Biao,
Mu Lan,
Li Haiyang,
Wang Jian,
Yip HinLap,
Peng Junbiao
Publication year - 2020
Publication title -
advanced materials technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.184
H-Index - 42
ISSN - 2365-709X
DOI - 10.1002/admt.202000099
Subject(s) - quantum dot , electroluminescence , perovskite (structure) , optoelectronics , materials science , oleylamine , matrix (chemical analysis) , nanotechnology , chemistry , nanocrystal , composite material , crystallography , layer (electronics)
Perovskite light emitting devices have been expected to be utilized in the field of displays. In this work, a stable FA 0.3 Cs 0.7 PbBr 3 perovskite quantum dot ink with optimized octane:dodecane cosolvent is obtained by introducing a trace amount of long‐chain ligand of oleylamine (OAm) during the quantum dot purification process. A green electroluminescent matrix device with 120 pixels per inch (PPI) is realized from the ink by using an inkjet printing technique, exhibiting a luminance of 1233 cd m −2 , a peak current efficiency of 10.3 cd A −1 , and an external quantum efficiency of 2.8%. The results may suggest a possibility of making perovskite quantum dot displays by using the inkjet printing technique.