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Proceedings Paper

Comparison of triangular and squared ITO nano-grating of GaN LEDs
Author(s): Ashli Behill; Tattiana K. C. Davenport; Xiaomin Jin
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Paper Abstract

We study nano-scale ITO top transmission gratings to improve light extraction efficiency using finite difference time domain (FDTD) method. Our study deals with a LED model with triangular-gratings and square-gratings. We achieve a 165.67% improvement for triangular ITO grating. Our study for square-gratings shows that it also can improve the total light extraction efficiency. Thus far, we have only achieved a 7.16% improvement with an ITO layer thickness of 230nm, a 230nm grating width and 10% duty cycle. We will present our comparison in further detail which will include various ITO layer thicknesses, grating widths and duty cycles.

Paper Details

Date Published: 28 August 2014
PDF: 9 pages
Proc. SPIE 9170, Nanoengineering: Fabrication, Properties, Optics, and Devices XI, 91701D (28 August 2014); doi: 10.1117/12.2061123
Show Author Affiliations
Ashli Behill, California Polytechnic State Univ., San Luis Obispo (United States)
Tattiana K. C. Davenport, California Polytechnic State Univ., San Luis Obispo (United States)
Xiaomin Jin, California Polytechnic State Univ., San Luis Obispo (United States)


Published in SPIE Proceedings Vol. 9170:
Nanoengineering: Fabrication, Properties, Optics, and Devices XI
Eva M. Campo; Elizabeth A. Dobisz; Louay A. Eldada, Editor(s)

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