No 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.