Fig. 4From: Preparation of a Periodic Polystyrene Nanosphere Array Using the Dip-Drop Method with Post-deposition Etching and Its Application of Improving Light Extraction Efficiency of InGaN/GaN LEDsCalculated intensity of a conventional LEDs and LEDs with different periods for PS NSs with 100 and 200 nm diameters and (b) varied angle under the different emission wavelength. The inset of b display the angular spectra of InGaN/GaN blue LED with the optimal periodic PS NS array window layer and without PS NS array window layer under emission wavelength of 460 nmBack to article page