中国物理B ›› 2008, Vol. 17 ›› Issue (12): 4533-4540.doi: 10.1088/1674-1056/17/12/034
• CLASSICAL AREAS OF PHENOMENOLOGY • 上一篇 下一篇
冯天华, 戴峭峰, 吴立军, 郭旗, 胡巍, 兰胜
Feng Tian-Hua (冯天华), Dai Qiao-Feng (戴峭峰), Wu Li-Jun (吴立军), Guo Qi (郭旗), Hu Wei (胡巍), Lan Sheng (兰胜)
摘要: Application of the pressure controlled isothermal heating vertical deposition method to the fabrication of colloidal photonic crystals is systematically investigated in this paper. The fabricated samples are characterized by scanning electron microscope and transmission spectrum. High-quality samples with large transmissions in the pass bands and the sharp band edges are obtained and the optimum growth condition is determined. For the best sample, the transmission in the pass bands approaches 0.9 while that in the band gap reaches 0.1. More importantly, the maximum differential transmission as high as 0.1/nm is achieved. In addition, it is found that the number of stacking layers does not increase linearly with concentration of PS spheres in a solution, and a gradual saturation occurs when the concentration of PS spheres exceeds 1.5 wt.%. The uniformity of the fabricated samples is examined by transmission measurements on areas with different sizes. Finally, the tolerance of the fabricated samples to baking was studied.
中图分类号: (Methods of materials synthesis and materials processing)