28 August 2014 Comparison of triangular and squared ITO nano-grating of GaN LEDs
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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.
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Ashli Behill, Ashli Behill, Tattiana K. C. Davenport, Tattiana K. C. Davenport, Xiaomin Jin, Xiaomin Jin, "Comparison of triangular and squared ITO nano-grating of GaN LEDs", Proc. SPIE 9170, Nanoengineering: Fabrication, Properties, Optics, and Devices XI, 91701D (28 August 2014); doi: 10.1117/12.2061123; https://doi.org/10.1117/12.2061123

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