中文摘要：

基于水面乳胶颗粒的自组装特性，通过将稀释的聚苯乙烯球铺展在去离子水中，用表面活性剂加固后将其转移到氮化钾基发光二极管（简称GaN基LED）表面的方法制备较大面积的单层聚苯乙烯球颗粒．场发射扫描电子显微镜测试表明：该方法能在较短时间内在GaN基LED表面形成六角紧凑的聚苯乙烯微球的二维阵列，微球平均直径约为350nm．加入75μL表面活性剂，利于形成二维结晶．这为聚苯乙烯球做掩模版粗化GaN表面，提高大功率GaN基LED的光提取率提供了一种有效的途径．

英文摘要：

Based on self-assembly of latex particles on water surface, large closely packed monolayer polystyrene （PS） microspheres arrays were performed on the p-GaN surface of a thin GaN-based light-emitting diode （LED） by transferring diluted PS microspheres from deionized water to the surface of GaN-LED wafer after consolidation of surfactant. Field emission scanning electron microscopy showed that well-ordered two- dimensional arrays of hexagonally packed PS nanospheres are obtained in a short time with a mean diameter at 350 nm, which when added with 75 μL surfactant form two-dimensional crystalline arrays with better results. It proves an effective approach in using the PS microspheres as a mask for further texturing to improve the light extraction efficiency in the high power GaN-based light-emitting diode.