中国激光, 2016, 43 (6): 0602008, 网络出版: 2016-06-06
晶硅表面亚微米结构阵列的介电微球辅助激光化学复合成型
Sub-Micron-Structure Array on Silicon Surface Fabricated by Dielectric Microsphere Assisted Laser Irradiation Followed by Chemical Etching
激光技术 介电微球 准分子激光 单晶硅 碱刻蚀 微结构阵列 laser technique dielectric microspheres excimer laser crystalline silicon alkali etching microstructure array
摘要
介绍了一种具有高工艺可控性特征的单晶硅表面亚微米结构阵列介电微球辅助激光-化学复合成型的方法,采用这种方法可以在单晶硅表面制备具有较好周期性和均一性的三维微结构阵列。分析并总结了微球直径、刻蚀时间及激光脉冲能量密度对结构成型的影响规律,根据时域有限差分模拟法和晶硅结晶及其化学刻蚀的基础理论,分析研究了微结构的成型机制,并以样品表面反射率为例,验证了利用不同工艺所制备出的微米结构阵列对其表面光学性能的调控作用。
Abstract
One method of dielectric microsphere assisted laser irradiation followed by chemical etching for fabrication of sub-micro structure arrays on silicon surface with high processing controllability is presented. Three dimensional micro-structure arrays with high quality of periodicity and homogeneity can be fabricated on silicon surface. The formation rules of microstructure depending on microsphere size, etching time, and laser fluence are analyzed systematically. Based on the finite-difference time-domain simulation and the basic theories of silicon crystallization and chemical etching, the microstructure formation mechanism of the microstructures is investigated. By means of testing reflectivity of fabricated silicon samples, the regulation effect of the microstructure arrays fabricated under different processing conditions on the optical performance of the silicon surfaces is verified.
林真源, 季凌飞, 吴燕, 吕晓占, 蒋毅坚. 晶硅表面亚微米结构阵列的介电微球辅助激光化学复合成型[J]. 中国激光, 2016, 43(6): 0602008. Lin Zhenyuan, Ji Lingfei, Wu Yan, Lü Xiaozhan, Jiang Yijian. Sub-Micron-Structure Array on Silicon Surface Fabricated by Dielectric Microsphere Assisted Laser Irradiation Followed by Chemical Etching[J]. Chinese Journal of Lasers, 2016, 43(6): 0602008.