中文版 | English
Title

Low Efficiency Attenuation and Stable Monochromaticity for Non-Polar m-Plane Micro-Ligh-Emitting-Diodes (Micro-LEDs)

Author
DOI
Publication Years
2022
Conference Name
59th International Symposium, Seminar and Exhibition, Display Week 2022
ISSN
0097-966X
EISSN
2168-0159
Source Title
Volume
53
Pages
541-544
Conference Date
May 8, 2022 - May 13, 2022
Conference Place
San Jose, CA, United states
Publisher
Abstract
In this paper, the gallium nitride (GaN) free-standing non-polar m-plane micro-LEDs and polar c-plane micro-LEDs on patterned sapphire substrate with a 550-nm emission light were fabricated and characterized. Compared with c-plane micro- LEDs suffering from strong quantum confined stark effect (QCSE), the absence of polarization effect in m-plane devices contributed to a lower efficiency attenuation and narrower peak and color shift with elevating current density. Specifically, the peak wavelength shift for c-plane and m-plane micro-LEDs was 81 nm and 8.12 nm respectively from 1 to 500 A/cm2, and the efficiency droop ratio was 50.2% for c-plane and 27.2% for m- plane devices from 0.1 to 300 A/cm2. Importantly, our m-plane micro-LEDs achieved a stable monochromaticity and wider color gamut under different injection current density (97.9% and 98.2% of Rec. 2020 at 1 and 500 A/cm2).
© 2022 SID.
SUSTech Authorship
Others
Language
English
Indexed By
EI Accession Number
20223312556923
EI Keywords
Gallium nitride ; III-V semiconductors ; Light emitting diodes ; Sapphire
ESI Classification Code
Gems:482.2.1 ; Semiconducting Materials:712.1 ; Semiconductor Devices and Integrated Circuits:714.2 ; Production Engineering:913.1
Data Source
EV Compendex
Citation statistics
Cited Times [WOS]:0
Document TypeConference paper
Identifierhttp://kc.sustech.edu.cn/handle/2SGJ60CL/411571
DepartmentSouthern University of Science and Technology
Affiliation
1.Hong Kong University of Science and Technology, Hong Kong
2.Southern University of Science and Technology, Shenzhen, China
3.Shenzhen Sitan Technology Co. Ltd, Shenzhen, China
Recommended Citation
GB/T 7714
Liu, Yibo,Feng, Feng,Zhang, Ke,et al. Low Efficiency Attenuation and Stable Monochromaticity for Non-Polar m-Plane Micro-Ligh-Emitting-Diodes (Micro-LEDs)[C]:John Wiley and Sons Inc,2022:541-544.
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