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Optical Investigations of Nano-LEDs Based on Submicron-Sized III-Nitride Platelets

Gustafsson, Anders LU orcid ; Bi, Zhaoxia LU orcid and Samuelson, Lars LU (2024) In Physica Status Solidi. B: Basic Research
Abstract
A study of submicron-sized InGaN containing a single quantum well, intended for use as nano-light-emitting diodes in high-resolution display based on direct emission, is presented. Herein, the structures are grown by a bottom-up method from holes in a masked GaN/sapphire substrate and are intended for red emission. Many of the platelets show dark lines in cathodoluminescence images, previously identified as stacking mismatch boundaries. These introduce local shifts in the reduced emission, perhaps related to local strain. However, the total emission position stays unaffected, just reduced in intensity. Due to an unintended variation in the size of the c-facet, there is a gradient in the indium content which, in turn, leads to a significant... (More)
A study of submicron-sized InGaN containing a single quantum well, intended for use as nano-light-emitting diodes in high-resolution display based on direct emission, is presented. Herein, the structures are grown by a bottom-up method from holes in a masked GaN/sapphire substrate and are intended for red emission. Many of the platelets show dark lines in cathodoluminescence images, previously identified as stacking mismatch boundaries. These introduce local shifts in the reduced emission, perhaps related to local strain. However, the total emission position stays unaffected, just reduced in intensity. Due to an unintended variation in the size of the c-facet, there is a gradient in the indium content which, in turn, leads to a significant shift in the peak position of the quantum well emission. With increasing probe current there is a slight blueshift, likely a result of the quantum confined Stark effect (Less)
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author
; and
organization
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type
Contribution to journal
publication status
epub
subject
in
Physica Status Solidi. B: Basic Research
article number
2400446
publisher
John Wiley & Sons Inc.
external identifiers
  • scopus:85211116403
ISSN
0370-1972
DOI
10.1002/pssb.202400446
language
English
LU publication?
yes
id
9019b9f4-d144-4956-99c8-29f27660d79e
date added to LUP
2025-01-07 17:08:40
date last changed
2025-04-04 15:09:33
@article{9019b9f4-d144-4956-99c8-29f27660d79e,
  abstract     = {{A study of submicron-sized InGaN containing a single quantum well, intended for use as nano-light-emitting diodes in high-resolution display based on direct emission, is presented. Herein, the structures are grown by a bottom-up method from holes in a masked GaN/sapphire substrate and are intended for red emission. Many of the platelets show dark lines in cathodoluminescence images, previously identified as stacking mismatch boundaries. These introduce local shifts in the reduced emission, perhaps related to local strain. However, the total emission position stays unaffected, just reduced in intensity. Due to an unintended variation in the size of the c-facet, there is a gradient in the indium content which, in turn, leads to a significant shift in the peak position of the quantum well emission. With increasing probe current there is a slight blueshift, likely a result of the quantum confined Stark effect}},
  author       = {{Gustafsson, Anders and Bi, Zhaoxia and Samuelson, Lars}},
  issn         = {{0370-1972}},
  language     = {{eng}},
  month        = {{10}},
  publisher    = {{John Wiley & Sons Inc.}},
  series       = {{Physica Status Solidi. B: Basic Research}},
  title        = {{Optical Investigations of Nano-LEDs Based on Submicron-Sized III-Nitride Platelets}},
  url          = {{http://dx.doi.org/10.1002/pssb.202400446}},
  doi          = {{10.1002/pssb.202400446}},
  year         = {{2024}},
}