NDLI: Monolithic integration of four-colour InGaN-based nanocolumn LEDs

Content Provider	IET Digital Library
Author	Kishino, K. Yanagihara, A. Ikeda, K. Yamano, K.
Abstract	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.
Starting Page	852
Ending Page	854
Page Count	3
ISSN	00135194
Volume Number	51
e-ISSN	1350911X
Issue Number	Issue 11, May (2015)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/el/51/11
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/el.2015.0770
Journal	Electronics Letters
Publisher Date	2015-05-15
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Blue-emitting MicroLED Circular Indium Tin Oxide Emission Window Four-colour InGaN-based Nanocolumn LED Gallium Compound Green-emitting MicroLED III-V SemiConductor Indium Compound InGaN-GaN Integrated Optoelectronics ITO Lattice Constant Lattice Constants Light Emitting Diode Light-emitting Diode Monolithic Integration Multiple Quantum Wells Nanoelectronics Semiconductor Quantum Wells Size 65 Mum to 231 Nm Sky-blue-emitting MicroLED Triangular Lattice Wide Band Gap SemiConductor Yellow-emitting MicroLED
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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