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

Cite this

@article{ddee1b0aef6b4dbcac64b80447c8bc3f,

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",

month = aug,

day = "1",

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

language = "English (US)",

volume = "16",

journal = "Applied Physics Express",

issn = "1882-0778",

publisher = "Japan Society of Applied Physics",

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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 - https://www.scopus.com/pages/publications/85167868053

UR - https://www.scopus.com/pages/publications/85167868053#tab=citedBy

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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