TY - JOUR
T1 - Strong Linearly Polarized Photoluminescence and Electroluminescence from Halide Perovskite/Azobenzene Dye Composite Film for Display Applications
AU - Zhang, Jianfeng
AU - Meng, Cuiling
AU - Huang, Jincheng
AU - Jiang, Le
AU - Zhou, Dingjian
AU - Chen, Rongsheng
AU - Yeung, Fion
AU - Kwok, Hoi Sing
AU - Xu, Ping
AU - Li, Guijun
N1 - Publisher Copyright:
© 2020 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
PY - 2020/4/1
Y1 - 2020/4/1
N2 - Polarization emission from halide perovskite is expected to bring a lot of benefits for next-generation displays, such as cost down, wide color gamut, and structure simplification. In this work, strong linearly polarized luminescence from emissive halide perovskites modulated by photoaligned azobenzene dye AD1 is demonstrated. The azobenzene dye functionalized halide perovskite thin films not only exhibit exceptionally high degree of polarization (DOP) of 86.2–93.1% for red, green, and blue emission, but also promise an improved environmental stability originating from the hydrophobic nature of the azobenzene dye. When these perovskite/AD1 composite films are applied in liquid crystal display panels to replace the conventional thick polarizer, the energy efficiency can be doubled and the color gamut can be extended to >120% NTSC. Furthermore, the AD1 functionalized strategy is successfully employed to generate linearly polarized electroluminescence from an inverted perovskite light-emitting diode, showing a high DOP of 47%.
AB - Polarization emission from halide perovskite is expected to bring a lot of benefits for next-generation displays, such as cost down, wide color gamut, and structure simplification. In this work, strong linearly polarized luminescence from emissive halide perovskites modulated by photoaligned azobenzene dye AD1 is demonstrated. The azobenzene dye functionalized halide perovskite thin films not only exhibit exceptionally high degree of polarization (DOP) of 86.2–93.1% for red, green, and blue emission, but also promise an improved environmental stability originating from the hydrophobic nature of the azobenzene dye. When these perovskite/AD1 composite films are applied in liquid crystal display panels to replace the conventional thick polarizer, the energy efficiency can be doubled and the color gamut can be extended to >120% NTSC. Furthermore, the AD1 functionalized strategy is successfully employed to generate linearly polarized electroluminescence from an inverted perovskite light-emitting diode, showing a high DOP of 47%.
KW - azo dye
KW - displays
KW - halide perovskites
KW - linearly polarized luminescence
KW - photoalignment
UR - https://www.webofscience.com/wos/woscc/full-record/WOS:000511009700001
UR - https://openalex.org/W3004697731
UR - https://www.scopus.com/pages/publications/85079067864
U2 - 10.1002/adom.201901824
DO - 10.1002/adom.201901824
M3 - Journal Article
SN - 2195-1071
VL - 8
JO - Advanced Optical Materials
JF - Advanced Optical Materials
IS - 7
M1 - 1901824
ER -
