Design Simulation of Top ITO Gratings to Improve Light Transmission for Gallium Nitride LEDs

Author

Jin, Xiaomin ; Trieu, Simeon ; Wang, Fei ; Zhang, Bei ; Dai, Tao ; Kang, Xiangning ; Zhang, Guoyi

Author_Institution

Electr. Eng. Dept., California Polytech. State Univ., San Luis Obispo, AZ

fYear

2009

fDate

27-29 April 2009

Firstpage

1

Lastpage

4

Abstract

We present simulation results of the indium tin oxide (ITO) top diffraction grating using a rigorous couple wave analysis (RCWA) for GaN LEDs. We study three different nano-structure patterns: cylindrical pillar grating, conical pillar grating, and cylindrical nano-hole grating. We show the light transmission improvement with nano-grating designs and present design-charts for the nano-hole grating.

Keywords

coupled mode analysis; diffraction gratings; gallium compounds; indium compounds; light emitting diodes; light transmission; tin compounds; GaN; ITO; conical pillar grating; cylindrical nano-hole grating; cylindrical pillar grating; design-charts; gallium nitride LED; indium tin oxide; light transmission; nanostructure patterns; rigorous couple wave analysis; top diffraction grating; Analytical models; Diffraction gratings; Etching; Fabrication; Gallium nitride; III-V semiconductor materials; Indium tin oxide; Light emitting diodes; Optical coupling; Physics; GaN; LED; Nano-grating;

fLanguage

English

Publisher

ieee

Conference_Titel

Information Technology: New Generations, 2009. ITNG '09. Sixth International Conference on

Conference_Location

Las Vegas, NV

Print_ISBN

978-1-4244-3770-2

Electronic_ISBN

978-0-7695-3596-8

Type

conf

DOI

10.1109/ITNG.2009.10

Filename

5070582