High-performance nanowire ultraviolet light-emitting diodes with potassium hydroxide and ammonium sulfide surface passivation

Ha Quoc Thang Bui; Ravi Teja Velpula; Barsha Jian; Moab Rajan Philip; Hien Duy Tong; Trupti Rajan Lenka; Hieu Pham Trung Nguyen

doi:10.1364/AO.400877

High-performance nanowire ultraviolet light-emitting diodes with potassium hydroxide and ammonium sulfide surface passivation

Ha Quoc Thang Bui
, Ravi Teja Velpula
, Barsha Jian
, Moab Rajan Philip
, Hien Duy Tong
, Trupti Rajan Lenka
, Hieu Pham Trung Nguyen

Electrical and Computer Engineering

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

21 Scopus citations

Abstract

Potassium hydroxide (KOH) and ammonium sulfide (NH₄)₂S_x have been used as a surface passivation treatment to improve the electrical and optical performance of AlGaN nanowire ultraviolet (UV) light-emitting diodes (LEDs). Enhancements in photoluminescence at 335 nm (49%), optical output power (65%), and electroluminescence (83%), with respect to the as-grown nanowire LED are recorded for the AlGaN nanowire UV LEDs with surface passivation. These enhancements are attributed to the reduced nonradiative recombination on the nanowire surfaces. This study provides a potential surface passivation approach to produce high-power AlGaN nanowire LEDs operating in the UV spectrum.

Original language	English (US)
Pages (from-to)	7352-7356
Number of pages	5
Journal	Applied Optics
Volume	59
Issue number	24
DOIs	https://doi.org/10.1364/AO.400877
State	Published - Aug 20 2020

All Science Journal Classification (ASJC) codes

Atomic and Molecular Physics, and Optics
Engineering (miscellaneous)
Electrical and Electronic Engineering

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Cite this

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title = "High-performance nanowire ultraviolet light-emitting diodes with potassium hydroxide and ammonium sulfide surface passivation",

abstract = "Potassium hydroxide (KOH) and ammonium sulfide (NH4)2Sx have been used as a surface passivation treatment to improve the electrical and optical performance of AlGaN nanowire ultraviolet (UV) light-emitting diodes (LEDs). Enhancements in photoluminescence at 335 nm (49\%), optical output power (65\%), and electroluminescence (83\%), with respect to the as-grown nanowire LED are recorded for the AlGaN nanowire UV LEDs with surface passivation. These enhancements are attributed to the reduced nonradiative recombination on the nanowire surfaces. This study provides a potential surface passivation approach to produce high-power AlGaN nanowire LEDs operating in the UV spectrum.",

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doi = "10.1364/AO.400877",

language = "English (US)",

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AU - Bui, Ha Quoc Thang

AU - Velpula, Ravi Teja

AU - Jian, Barsha

AU - Philip, Moab Rajan

AU - Tong, Hien Duy

AU - Lenka, Trupti Rajan

AU - Nguyen, Hieu Pham Trung

PY - 2020/8/20

Y1 - 2020/8/20

N2 - Potassium hydroxide (KOH) and ammonium sulfide (NH4)2Sx have been used as a surface passivation treatment to improve the electrical and optical performance of AlGaN nanowire ultraviolet (UV) light-emitting diodes (LEDs). Enhancements in photoluminescence at 335 nm (49%), optical output power (65%), and electroluminescence (83%), with respect to the as-grown nanowire LED are recorded for the AlGaN nanowire UV LEDs with surface passivation. These enhancements are attributed to the reduced nonradiative recombination on the nanowire surfaces. This study provides a potential surface passivation approach to produce high-power AlGaN nanowire LEDs operating in the UV spectrum.

AB - Potassium hydroxide (KOH) and ammonium sulfide (NH4)2Sx have been used as a surface passivation treatment to improve the electrical and optical performance of AlGaN nanowire ultraviolet (UV) light-emitting diodes (LEDs). Enhancements in photoluminescence at 335 nm (49%), optical output power (65%), and electroluminescence (83%), with respect to the as-grown nanowire LED are recorded for the AlGaN nanowire UV LEDs with surface passivation. These enhancements are attributed to the reduced nonradiative recombination on the nanowire surfaces. This study provides a potential surface passivation approach to produce high-power AlGaN nanowire LEDs operating in the UV spectrum.

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JO - Applied Optics

JF - Applied Optics

IS - 24

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High-performance nanowire ultraviolet light-emitting diodes with potassium hydroxide and ammonium sulfide surface passivation

Abstract

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