Efficiency enhancement of GaN-based LED using nanotechnology

C. H. Chiu, M. A. Tsai, Peichen Yu, Hao-Chung Kuo

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We had demonstrated several novel methods to improve the luminescence efficiency of the GaN-based light emitting diodes (LEDs). The high-aspect-ratio GaN nanorods, formed by spun nano-spheres and inductively coupled plasma (ICP) etching, contributed to an enhancement in light output power and better light directionality. Nevertheless, the etching process would affect the electrical properties. We then attempt to rough the surface by synthesizing ZnO nanorods in liquid solution at room temperature. The LEDs with ZnO nanorods enjoyed high extraction efficiency and comparable electric performance than that without nanorods. At third part, we fabricate a high efficiency GaN-based LED by regrowth on SiO2 nanorod patterned sapphire substrate. It could improve the light extraction and internal efficiencies simultaneously.

Original languageEnglish
Title of host publicationPhotonics and Optoelectronics Meetings (POEM) 2009 - Solar Cells, Solid State Lighting, and Information Display Technologies
DOIs
StatePublished - 11 Dec 2009
EventPhotonics and Optoelectronics Meetings (POEM) 2009 - Solar Cells, Solid State Lighting, and Information Display Technologies - Wuhan, China
Duration: 8 Aug 200910 Aug 2009

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume7518
ISSN (Print)0277-786X

Conference

ConferencePhotonics and Optoelectronics Meetings (POEM) 2009 - Solar Cells, Solid State Lighting, and Information Display Technologies
CountryChina
CityWuhan
Period8/08/0910/08/09

Keywords

  • GaN & ZnO nanorods
  • Light emitting diodes
  • Nanorod-array patterned sapphire substrate

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  • Cite this

    Chiu, C. H., Tsai, M. A., Yu, P., & Kuo, H-C. (2009). Efficiency enhancement of GaN-based LED using nanotechnology. In Photonics and Optoelectronics Meetings (POEM) 2009 - Solar Cells, Solid State Lighting, and Information Display Technologies [75180A] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 7518). https://doi.org/10.1117/12.843671