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Beyond OLED: Efficient Quantum Dot Light‐Emitting Diodes for Display and Lighting Application
Author(s) -
Sun Yizhe,
Jiang Yibin,
Sun Xiao Wei,
Zhang Shengdong,
Chen Shuming
Publication year - 2019
Publication title -
the chemical record
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.61
H-Index - 78
eISSN - 1528-0691
pISSN - 1527-8999
DOI - 10.1002/tcr.201800191
Subject(s) - backlight , quantum dot , gamut , optoelectronics , oled , common emitter , materials science , diode , liquid crystal display , light emitting diode , pixel , computer science , display device , photoluminescence , nanotechnology , artificial intelligence , layer (electronics) , operating system
The unique features of solution‐processed quantum dots (QDs) including emission tunability in the visible range, high‐quality saturated color and outstanding intrinsic stability in environment are highly desired in various application fields. Especially, for the preparation of wide color gamut displays, QDs with high photoluminescence quantum yield are deemed as the optimal fluorescent emitter that has been utilized in the backlight for liquid crystal display. Nevertheless, the commercialization of electrically driven self‐emissive quantum dot light‐emitting diode (QLED) display is the ultimate target due to its merits of high contrast, slim configuration and compatibility with flexible substrate. Through the great efforts devoted to material engineering and device configuration, astonishing progresses have been made in device performance, giving the QLED technology a great chance to compete with other counterparts for next‐generation displays. In this review, we retrospect the development roadmap of QLED technology and introduce the essential principles in the QLED devices. Moreover, we discuss the key factors that affect the QLED efficiency and lifetime. Finally, the advances in device architectures and pixel patterning are also summarized.