III-nitride based narrow band far-UVC LEDs for airborne and surface disinfection

H. Q.T. Bui; R. T. Velpula; B. Jain; H. P.T. Nguyen

doi:10.1149/09806.0083ecst

III-nitride based narrow band far-UVC LEDs for airborne and surface disinfection

H. Q.T. Bui, R. T. Velpula, B. Jain, H. P.T. Nguyen

Electrical and Computer Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Narrow-band far-ultraviolet C (λ = 200-230 nm) light-emitting diodes (far-UVC LEDs) are strongly detrimental to airborne pathogen like bacteria and viruses while minimally invasive to human health so they can be used as a disinfectant to suppress the outbreak of infectious diseases with minimum safety concerns. Herein, we investigate a design of AlGaN/AlN nanowire structure in combination with a bandpass filter for a narrow band far-UVC LED at 222 nm center wavelength. The LED achieves an ultra-narrow full width at half maximum (FWHM) of ~12 nm after introducing a metal-dielectric Fabry-Perot optical bandpass interference filter with three periods of Al/MgF₂/Al layers. The electrical and optical properties of the nanowire LEDs show the high performances with an internal quantum efficiency (IQE) up to 80% and the maximum power exceeding 10 mW at a current injection of 60 mA. This narrow-band far-UVC LED is a promising candidate for airborne and surface disinfection in occupied spaces to prevent the spread of contagious diseases.

Original language	English (US)
Title of host publication	PRiME 2020
Subtitle of host publication	Joint Symposium: State-of-the-Art Program on Compound Semiconductors 63 (SOTAPOCS 63) -and- GaN and SiC Power Technologies 10
Editors	T. Anderson, J. K. Hite, R. P. Lynch, C. O'Dwyer, E. A. Douglas, Y. Zhao, M. Dudley, B. Raghothamachar, M. Bakowski, N. Ohtani
Publisher	IOP Publishing Ltd.
Pages	83-89
Number of pages	7
Edition	6
ISBN (Electronic)	9781607689010
DOIs	https://doi.org/10.1149/09806.0083ecst
State	Published - 2020
Event	Pacific Rim Meeting on Electrochemical and Solid State Science 2020, PRiME 200 - Honolulu, United States Duration: Oct 4 2020 → Oct 9 2020

Publication series

Name	ECS Transactions
Number	6
Volume	98
ISSN (Print)	1938-6737
ISSN (Electronic)	1938-5862

Conference

Conference	Pacific Rim Meeting on Electrochemical and Solid State Science 2020, PRiME 200
Country/Territory	United States
City	Honolulu
Period	10/4/20 → 10/9/20

All Science Journal Classification (ASJC) codes

General Engineering

Access to Document

10.1149/09806.0083ecst

Cite this

Bui, H. Q. T., Velpula, R. T., Jain, B., & Nguyen, H. P. T. (2020). III-nitride based narrow band far-UVC LEDs for airborne and surface disinfection. In T. Anderson, J. K. Hite, R. P. Lynch, C. O'Dwyer, E. A. Douglas, Y. Zhao, M. Dudley, B. Raghothamachar, M. Bakowski, & N. Ohtani (Eds.), PRiME 2020: Joint Symposium: State-of-the-Art Program on Compound Semiconductors 63 (SOTAPOCS 63) -and- GaN and SiC Power Technologies 10 (6 ed., pp. 83-89). (ECS Transactions; Vol. 98, No. 6). IOP Publishing Ltd.. https://doi.org/10.1149/09806.0083ecst

Bui, H. Q.T. ; Velpula, R. T. ; Jain, B. et al. / III-nitride based narrow band far-UVC LEDs for airborne and surface disinfection. PRiME 2020: Joint Symposium: State-of-the-Art Program on Compound Semiconductors 63 (SOTAPOCS 63) -and- GaN and SiC Power Technologies 10. editor / T. Anderson ; J. K. Hite ; R. P. Lynch ; C. O'Dwyer ; E. A. Douglas ; Y. Zhao ; M. Dudley ; B. Raghothamachar ; M. Bakowski ; N. Ohtani. 6. ed. IOP Publishing Ltd., 2020. pp. 83-89 (ECS Transactions; 6).

@inproceedings{1df70a45bfb046d583856ac2b620fbd3,

title = "III-nitride based narrow band far-UVC LEDs for airborne and surface disinfection",

abstract = "Narrow-band far-ultraviolet C (λ = 200-230 nm) light-emitting diodes (far-UVC LEDs) are strongly detrimental to airborne pathogen like bacteria and viruses while minimally invasive to human health so they can be used as a disinfectant to suppress the outbreak of infectious diseases with minimum safety concerns. Herein, we investigate a design of AlGaN/AlN nanowire structure in combination with a bandpass filter for a narrow band far-UVC LED at 222 nm center wavelength. The LED achieves an ultra-narrow full width at half maximum (FWHM) of \textasciitilde{}12 nm after introducing a metal-dielectric Fabry-Perot optical bandpass interference filter with three periods of Al/MgF2/Al layers. The electrical and optical properties of the nanowire LEDs show the high performances with an internal quantum efficiency (IQE) up to 80\% and the maximum power exceeding 10 mW at a current injection of 60 mA. This narrow-band far-UVC LED is a promising candidate for airborne and surface disinfection in occupied spaces to prevent the spread of contagious diseases.",

author = "Bui, \{H. Q.T.\} and Velpula, \{R. T.\} and B. Jain and Nguyen, \{H. P.T.\}",

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doi = "10.1149/09806.0083ecst",

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series = "ECS Transactions",

publisher = "IOP Publishing Ltd.",

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editor = "T. Anderson and Hite, \{J. K.\} and Lynch, \{R. P.\} and C. O'Dwyer and Douglas, \{E. A.\} and Y. Zhao and M. Dudley and B. Raghothamachar and M. Bakowski and N. Ohtani",

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Bui, HQT, Velpula, RT, Jain, B & Nguyen, HPT 2020, III-nitride based narrow band far-UVC LEDs for airborne and surface disinfection. in T Anderson, JK Hite, RP Lynch, C O'Dwyer, EA Douglas, Y Zhao, M Dudley, B Raghothamachar, M Bakowski & N Ohtani (eds), PRiME 2020: Joint Symposium: State-of-the-Art Program on Compound Semiconductors 63 (SOTAPOCS 63) -and- GaN and SiC Power Technologies 10. 6 edn, ECS Transactions, no. 6, vol. 98, IOP Publishing Ltd., pp. 83-89, Pacific Rim Meeting on Electrochemical and Solid State Science 2020, PRiME 200, Honolulu, United States, 10/4/20. https://doi.org/10.1149/09806.0083ecst

III-nitride based narrow band far-UVC LEDs for airborne and surface disinfection. / Bui, H. Q.T.; Velpula, R. T.; Jain, B. et al.
PRiME 2020: Joint Symposium: State-of-the-Art Program on Compound Semiconductors 63 (SOTAPOCS 63) -and- GaN and SiC Power Technologies 10. ed. / T. Anderson; J. K. Hite; R. P. Lynch; C. O'Dwyer; E. A. Douglas; Y. Zhao; M. Dudley; B. Raghothamachar; M. Bakowski; N. Ohtani. 6. ed. IOP Publishing Ltd., 2020. p. 83-89 (ECS Transactions; Vol. 98, No. 6).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - III-nitride based narrow band far-UVC LEDs for airborne and surface disinfection

AU - Bui, H. Q.T.

AU - Velpula, R. T.

AU - Jain, B.

AU - Nguyen, H. P.T.

N1 - Publisher Copyright: © The Electrochemical Society

PY - 2020

Y1 - 2020

N2 - Narrow-band far-ultraviolet C (λ = 200-230 nm) light-emitting diodes (far-UVC LEDs) are strongly detrimental to airborne pathogen like bacteria and viruses while minimally invasive to human health so they can be used as a disinfectant to suppress the outbreak of infectious diseases with minimum safety concerns. Herein, we investigate a design of AlGaN/AlN nanowire structure in combination with a bandpass filter for a narrow band far-UVC LED at 222 nm center wavelength. The LED achieves an ultra-narrow full width at half maximum (FWHM) of ~12 nm after introducing a metal-dielectric Fabry-Perot optical bandpass interference filter with three periods of Al/MgF2/Al layers. The electrical and optical properties of the nanowire LEDs show the high performances with an internal quantum efficiency (IQE) up to 80% and the maximum power exceeding 10 mW at a current injection of 60 mA. This narrow-band far-UVC LED is a promising candidate for airborne and surface disinfection in occupied spaces to prevent the spread of contagious diseases.

AB - Narrow-band far-ultraviolet C (λ = 200-230 nm) light-emitting diodes (far-UVC LEDs) are strongly detrimental to airborne pathogen like bacteria and viruses while minimally invasive to human health so they can be used as a disinfectant to suppress the outbreak of infectious diseases with minimum safety concerns. Herein, we investigate a design of AlGaN/AlN nanowire structure in combination with a bandpass filter for a narrow band far-UVC LED at 222 nm center wavelength. The LED achieves an ultra-narrow full width at half maximum (FWHM) of ~12 nm after introducing a metal-dielectric Fabry-Perot optical bandpass interference filter with three periods of Al/MgF2/Al layers. The electrical and optical properties of the nanowire LEDs show the high performances with an internal quantum efficiency (IQE) up to 80% and the maximum power exceeding 10 mW at a current injection of 60 mA. This narrow-band far-UVC LED is a promising candidate for airborne and surface disinfection in occupied spaces to prevent the spread of contagious diseases.

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EP - 89

BT - PRiME 2020

A2 - Anderson, T.

A2 - Hite, J. K.

A2 - Lynch, R. P.

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Bui HQT, Velpula RT, Jain B, Nguyen HPT. III-nitride based narrow band far-UVC LEDs for airborne and surface disinfection. In Anderson T, Hite JK, Lynch RP, O'Dwyer C, Douglas EA, Zhao Y, Dudley M, Raghothamachar B, Bakowski M, Ohtani N, editors, PRiME 2020: Joint Symposium: State-of-the-Art Program on Compound Semiconductors 63 (SOTAPOCS 63) -and- GaN and SiC Power Technologies 10. 6 ed. IOP Publishing Ltd. 2020. p. 83-89. (ECS Transactions; 6). doi: 10.1149/09806.0083ecst

III-nitride based narrow band far-UVC LEDs for airborne and surface disinfection

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