Monolithic integration of four-colour InGaN-based nanocolumn LEDs

The monolithic integration of four-colour indium gallium nitride (InGaN)-based nanocolumn light-emitting diodes (LEDs) is demonstrated. In the integrated nanocolumn LED unit, blue-, sky-blue-, green- and yellow-emitting micro-LEDs (LEDs 1–4) with a 65 μm diameter circular indium tin oxide emission w...

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Bibliographic Details
Published in:Electronics letters Vol. 51; no. 11; pp. 852 - 854
Main Authors: Kishino, K, Yanagihara, A, Ikeda, K, Yamano, K
Format: Journal Article
Language:English
Published: The Institution of Engineering and Technology 28.05.2015
Subjects:
Arrays
blue‐emitting microLED
circular indium tin oxide emission window
Emission
four‐colour InGaN‐based nanocolumn LED
gallium compounds
Gallium nitrides
green‐emitting microLED
III‐V semiconductors
indium compounds
Indium gallium nitrides
InGaN‐GaN
integrated optoelectronics
ITO
lattice constant
lattice constants
Lattice parameters
Lattices
Light-emitting diodes
monolithic integration
multiple quantum wells
nanoelectronics
Nanostructure
Photonics
semiconductor quantum wells
size 65 mum to 231 nm
sky‐blue‐emitting microLED
triangular lattice
wide band gap semiconductors
yellow‐emitting microLED
gallium compounds
multiple quantum wells
ITO
monolithic integration
lattice constant
indium compounds
integrated optoelectronics
light-emitting diodes
lattice constants
blue-emitting microLED
light emitting diodes
four-colour InGaN-based nanocolumn LED
InGaN-GaN
circular indium tin oxide emission window
triangular lattice
semiconductor quantum wells
yellow-emitting microLED
nanoelectronics
wide band gap semiconductors
sky-blue-emitting microLED
green-emitting microLED
size 65 mum to 231 nm
III-V semiconductors
ISSN:0013-5194, 1350-911X, 1350-911X
Online Access:Get full text
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Summary:The monolithic integration of four-colour indium gallium nitride (InGaN)-based nanocolumn light-emitting diodes (LEDs) is demonstrated. In the integrated nanocolumn LED unit, blue-, sky-blue-, green- and yellow-emitting micro-LEDs (LEDs 1–4) with a 65 μm diameter circular indium tin oxide emission window were arrayed in a 2 × 2 square lattice with a lattice constant of 190 μm. LEDs 1–4 consisted of nanocolumn arrays arranged in a triangular lattice with a lattice constant of 300 nm and their nanocolumn diameters at the position of the InGaN/gallium nitride (GaN) multiple quantum wells (MQWs) were 119, 145, 188 and 231 nm, respectively. The increase in nanocolumn diameter from LED 1 to LED 4 resulted in increasing emission peak wavelengths, which were 465, 489, 510 and 570 nm for LEDs 1–4, respectively. On the same substrate, a red-emitting micro-LED was prepared, in which the nanocolumn diameter was increased to 260 nm by using a 350 nm-lattice-constant nanocolumn array. A combination of different lattice constants in an integrated LED unit is expected to contribute to the achievement of red–green–blue–yellow (RGBY)-colour-integrated nanocolumn LEDs.
Bibliography:K. Kishino: Also with the Sophia Nanotechnology Research Center, Sophia University, Tokyo, Japan
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ISSN:0013-5194
1350-911X
1350-911X
DOI:10.1049/el.2015.0770