Spectrum narrowing and efficiency enhancement of quantum dot light-emitting diodes by microcavity

Shihao，Ding1,2; Rui，Cai2; Xiangtian，Xiao2; Zhenghui，Wu2; Bing，Xu1,2; Kai，Wang2; Wei，Sun Xiao2

10.1002/sdtp.14062

2020

0097-966X

2168-0159

Digest of Technical Papers - SID International Symposium

51

1

1082-1085

We have studied the spectrum narrowing of a microcavity quantum dot light-emitting diodes (MQLEDs), and observed enhancement in external quantum efficiency and luminance. Our results show that the full width at half maximum (FWHM) of electroluminescent is reduced by one-third using a distributed bragg reflector (DBR) and metal mirror to form a Fabry-Perot cavity. The narrowed spectrum also contributes to an ultrawide color gamut. In addition, the resonant cavity improves the light coupling efficiency of the devices, which exhibits a twenty percent enhancement of the external quantum efficiency.

Microcavity Quantum dots Spectrum narrowing

通讯

英语

EI

20204409427637

Quantum efficiency ; Electroluminescence ; Fabry-Perot interferometers ; Light ; Nanocrystals ; Organic light emitting diodes (OLED) ; Semiconductor quantum dots

Electricity: Basic Concepts and Phenomena:701.1 ; Electronic Components and Tubes:714 ; Semiconductor Devices and Integrated Circuits:714.2 ; Light, Optics and Optical Devices:741 ; Light/Optics:741.1 ; Nanotechnology:761 ; Quantum Theory; Quantum Mechanics:931.4 ; Crystalline Solids:933.1 ; Optical Instruments:941.3

2-s2.0-85094201155

Scopus

1.Shenzhen Planck Innovation Technologies Co. Ltd,Shenzhen,China
2.Guangdong University Key Lab for Advanced Quantum Dot Display and Lighting,Shenzhen Key Lab for Advanced Quantum Dot Display and Lighting,Department of Electrical & Electronic Engineering,Southern University of Science and Technology,Shenzhen,518055,China

Shihao，Ding,Rui，Cai,Xiangtian，Xiao,et al. Spectrum narrowing and efficiency enhancement of quantum dot light-emitting diodes by microcavity[C],2020:1082-1085.