Multi-active region AlGaN UV LEDs with transparent tunnel junctions

Agnes Maneesha Dominic Merwin Xavier; Arnob Ghosh; Sheikh Ifatur Rahman; Andrew Allerman; Darpan Verma; Roberto C. Myers; Shamsul Arafin; Siddharth Rajan

doi:10.35848/1882-0786/acea1b

Multi-active region AlGaN UV LEDs with transparent tunnel junctions

Agnes Maneesha Dominic Merwin Xavier, Arnob Ghosh, Sheikh Ifatur Rahman, Andrew Allerman, Darpan Verma, Roberto C. Myers, Shamsul Arafin, Siddharth Rajan

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

2 Scopus citations

Abstract

In this work, we demonstrate two-junction UV LEDs enabled by transparent tunnel junctions. Low voltage-drop tunnel junctions were realized in Al_0.3Ga_0.7N layers through a combination of high doping and compositional grading. Capacitance and current-voltage measurements confirmed the operation of two junctions in series. The voltage drop of the two-junction LED was 2.1 times that of an equivalent single-junction LED, and the two-junction LED had higher external quantum efficiency (147%) than the single junction.

Original language	English (US)
Article number	082001
Journal	Applied Physics Express
Volume	16
Issue number	8
DOIs	https://doi.org/10.35848/1882-0786/acea1b
State	Published - Aug 1 2023
Externally published	Yes

All Science Journal Classification (ASJC) codes

General Engineering
General Physics and Astronomy

Keywords

cascading LEDs
tunnel junctions
ultraviolet light-emitting diodes

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10.35848/1882-0786/acea1b

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title = "Multi-active region AlGaN UV LEDs with transparent tunnel junctions",

abstract = "In this work, we demonstrate two-junction UV LEDs enabled by transparent tunnel junctions. Low voltage-drop tunnel junctions were realized in Al0.3Ga0.7N layers through a combination of high doping and compositional grading. Capacitance and current-voltage measurements confirmed the operation of two junctions in series. The voltage drop of the two-junction LED was 2.1 times that of an equivalent single-junction LED, and the two-junction LED had higher external quantum efficiency (147%) than the single junction.",

keywords = "cascading LEDs, tunnel junctions, ultraviolet light-emitting diodes",

author = "{Dominic Merwin Xavier}, {Agnes Maneesha} and Arnob Ghosh and Rahman, {Sheikh Ifatur} and Andrew Allerman and Darpan Verma and Myers, {Roberto C.} and Shamsul Arafin and Siddharth Rajan",

note = "Publisher Copyright: {\textcopyright} 2023 The Japan Society of Applied Physics",

year = "2023",

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doi = "10.35848/1882-0786/acea1b",

language = "English (US)",

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journal = "Applied Physics Express",

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TY - JOUR

T1 - Multi-active region AlGaN UV LEDs with transparent tunnel junctions

AU - Dominic Merwin Xavier, Agnes Maneesha

AU - Ghosh, Arnob

AU - Rahman, Sheikh Ifatur

AU - Allerman, Andrew

AU - Verma, Darpan

AU - Myers, Roberto C.

AU - Arafin, Shamsul

AU - Rajan, Siddharth

PY - 2023/8/1

Y1 - 2023/8/1

N2 - In this work, we demonstrate two-junction UV LEDs enabled by transparent tunnel junctions. Low voltage-drop tunnel junctions were realized in Al0.3Ga0.7N layers through a combination of high doping and compositional grading. Capacitance and current-voltage measurements confirmed the operation of two junctions in series. The voltage drop of the two-junction LED was 2.1 times that of an equivalent single-junction LED, and the two-junction LED had higher external quantum efficiency (147%) than the single junction.

AB - In this work, we demonstrate two-junction UV LEDs enabled by transparent tunnel junctions. Low voltage-drop tunnel junctions were realized in Al0.3Ga0.7N layers through a combination of high doping and compositional grading. Capacitance and current-voltage measurements confirmed the operation of two junctions in series. The voltage drop of the two-junction LED was 2.1 times that of an equivalent single-junction LED, and the two-junction LED had higher external quantum efficiency (147%) than the single junction.

KW - cascading LEDs

KW - tunnel junctions

KW - ultraviolet light-emitting diodes

UR - http://www.scopus.com/inward/record.url?scp=85167868053&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85167868053&partnerID=8YFLogxK

U2 - 10.35848/1882-0786/acea1b

DO - 10.35848/1882-0786/acea1b

M3 - Letter

AN - SCOPUS:85167868053

SN - 1882-0778

VL - 16

JO - Applied Physics Express

JF - Applied Physics Express

IS - 8

M1 - 082001

ER -

Multi-active region AlGaN UV LEDs with transparent tunnel junctions

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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