Improve characteristics of GaN-based green mini-LEDs with double dielectric sidewall passivation

Meng Chun Shen; Wenan Guo; Jinlan Chen; Su Hui Lin; Saijun Li; Shouqiang Lai; Tingwei Lu; Min Huang; Hao Chung Kuo; Zhong Chen; Tingzhu Wu

doi:10.1088/1402-4896/acfb4d

Improve characteristics of GaN-based green mini-LEDs with double dielectric sidewall passivation

Meng Chun Shen, Wenan Guo, Jinlan Chen, Su Hui Lin, Saijun Li, Shouqiang Lai, Tingwei Lu, Min Huang, Hao Chung Kuo, Zhong Chen, Tingzhu Wu^*

^*Corresponding author for this work

Department of Photonics

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

The technique of double dielectric sidewall passivation could improve the electroluminescence characteristics of green mini-LED, including the leakage current, electroluminescence intensity and external quantum efficiency (EQE). According to the analysis of EQE with ABC + f(n) model, both the increment of size and the sidewall passivation could reduce the fraction of SRH recombination. Then, the results of time-resolved photoluminescence measurement indicated that the carrier lifetime of mini-LEDs with higher surface-volume ratio and sidewall passivation would be reduced. Moreover, the communication performances such as modulation bandwidth and frequency response of green mini-LEDs could also be improved by adopting double dielectric sidewall passivation, and the smaller sized green mini-LEDs could achieve higher modulation bandwidth and frequency response.

Original language	English
Article number	115524
Journal	Physica Scripta
Volume	98
Issue number	11
DOIs	https://doi.org/10.1088/1402-4896/acfb4d
State	Published - 1 Nov 2023

Keywords

communication performances
double dielectric sidewall passivation
electroluminescence
green mini-LED

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10.1088/1402-4896/acfb4d

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title = "Improve characteristics of GaN-based green mini-LEDs with double dielectric sidewall passivation",

abstract = "The technique of double dielectric sidewall passivation could improve the electroluminescence characteristics of green mini-LED, including the leakage current, electroluminescence intensity and external quantum efficiency (EQE). According to the analysis of EQE with ABC + f(n) model, both the increment of size and the sidewall passivation could reduce the fraction of SRH recombination. Then, the results of time-resolved photoluminescence measurement indicated that the carrier lifetime of mini-LEDs with higher surface-volume ratio and sidewall passivation would be reduced. Moreover, the communication performances such as modulation bandwidth and frequency response of green mini-LEDs could also be improved by adopting double dielectric sidewall passivation, and the smaller sized green mini-LEDs could achieve higher modulation bandwidth and frequency response.",

keywords = "communication performances, double dielectric sidewall passivation, electroluminescence, green mini-LED",

author = "Shen, {Meng Chun} and Wenan Guo and Jinlan Chen and Lin, {Su Hui} and Saijun Li and Shouqiang Lai and Tingwei Lu and Min Huang and Kuo, {Hao Chung} and Zhong Chen and Tingzhu Wu",

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doi = "10.1088/1402-4896/acfb4d",

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T1 - Improve characteristics of GaN-based green mini-LEDs with double dielectric sidewall passivation

AU - Shen, Meng Chun

AU - Guo, Wenan

AU - Chen, Jinlan

AU - Lin, Su Hui

AU - Li, Saijun

AU - Lai, Shouqiang

AU - Lu, Tingwei

AU - Huang, Min

AU - Kuo, Hao Chung

AU - Chen, Zhong

AU - Wu, Tingzhu

PY - 2023/11/1

Y1 - 2023/11/1

N2 - The technique of double dielectric sidewall passivation could improve the electroluminescence characteristics of green mini-LED, including the leakage current, electroluminescence intensity and external quantum efficiency (EQE). According to the analysis of EQE with ABC + f(n) model, both the increment of size and the sidewall passivation could reduce the fraction of SRH recombination. Then, the results of time-resolved photoluminescence measurement indicated that the carrier lifetime of mini-LEDs with higher surface-volume ratio and sidewall passivation would be reduced. Moreover, the communication performances such as modulation bandwidth and frequency response of green mini-LEDs could also be improved by adopting double dielectric sidewall passivation, and the smaller sized green mini-LEDs could achieve higher modulation bandwidth and frequency response.

AB - The technique of double dielectric sidewall passivation could improve the electroluminescence characteristics of green mini-LED, including the leakage current, electroluminescence intensity and external quantum efficiency (EQE). According to the analysis of EQE with ABC + f(n) model, both the increment of size and the sidewall passivation could reduce the fraction of SRH recombination. Then, the results of time-resolved photoluminescence measurement indicated that the carrier lifetime of mini-LEDs with higher surface-volume ratio and sidewall passivation would be reduced. Moreover, the communication performances such as modulation bandwidth and frequency response of green mini-LEDs could also be improved by adopting double dielectric sidewall passivation, and the smaller sized green mini-LEDs could achieve higher modulation bandwidth and frequency response.

KW - communication performances

KW - double dielectric sidewall passivation

KW - electroluminescence

KW - green mini-LED

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U2 - 10.1088/1402-4896/acfb4d

DO - 10.1088/1402-4896/acfb4d

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SN - 0031-8949

VL - 98

JO - Physica Scripta

JF - Physica Scripta

IS - 11

M1 - 115524

ER -

Improve characteristics of GaN-based green mini-LEDs with double dielectric sidewall passivation

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Keywords

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