Efficiency enhancement of GaN-based LED using nanotechnology

C. H. Chiu; M. A. Tsai; Peichen Yu; H. C. Kuo

doi:10.1117/12.843671

12 October 2009 Efficiency enhancement of GaN-based LED using nanotechnology

C. H. Chiu, M. A. Tsai, Peichen Yu, H. C. Kuo

Proceedings Volume 7518, Photonics and Optoelectronics Meetings (POEM) 2009: Solar Cells, Solid State Lighting, and Information Display Technologies; 75180A (2009) https://doi.org/10.1117/12.843671
Event: Photonics and Optoelectronics Meetings 2009, 2009, Wuhan, China

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.

Citation Download Citation

C. H. Chiu, M. A. Tsai, Peichen Yu, and H. C. Kuo "Efficiency enhancement of GaN-based LED using nanotechnology", Proc. SPIE 7518, Photonics and Optoelectronics Meetings (POEM) 2009: Solar Cells, Solid State Lighting, and Information Display Technologies, 75180A (12 October 2009); https://doi.org/10.1117/12.843671

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