| High-quality SiO2 Colloidal Crystal Fabricated by Controllable Vertical Deposition Method |
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| 作者姓名： | CAI Xiao-mei CHEN Fu-yi JIE Wan-qi |
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| 作者单位： | State Key Laboratory of Solidification Processing, Department of Materials Science, Northwestern Polytechnical University, Xi＇an 710072, CHN |
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| 基金项目： | Aeronautic Science Foundation Program of China（05G53038） |
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| 摘 要： | Monodispersed silica microspheres with diameter of 353 nm were assembled into photonic crystal in ethanol colloidal suspensions of varied silica volume fraction at different temperature and humidity by means of controllable vertical deposition method. The surface morphology and optical properties were studied by SEM and UV-Vis-NIR. It was found that the high quality silica colloidal photonic crystals were obtained from ethanol solutions with environment temperature between 45℃ and 55℃, humidity between 66% and 76%, the volume fraction of microspheres is between 0.8% and 1.5%, The ordered close-packed photonic crystal fabricated by controllable vertical deposition method had the two photonic bandgaps in the visible light band and near infrared band,
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| 关 键 词： | 光子晶体 二氧化硅晶体 沉积作用 光子能隙带 |
| 文章编号： | 1007-0206（2006）02-0095-05 |
| 收稿时间： | 2006-01-05 |
| 修稿时间： | 2006-02-13 |
High-quality SiO2 Colloidal Crystal Fabricated by Controllable Vertical Deposition Method |
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| CAI Xiao-mei CHEN Fu-yi JIE Wan-qi.High-quality SiO2 Colloidal Crystal Fabricated by Controllable Vertical Deposition Method[J].Semiconductor Photonics and Technology,2006,12(2):95-99. |
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| Authors: | CAI Xiao-mei CHEN Fu-yi JIE Wan-qi |
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| Abstract: | Monodispersed silica microspheres with diameter of 353nm were assembled into photonic crystal in ethanol colloidal suspensions of varied silica volume fraction at different temperature and humidity by means of controllable vertical deposition method. The surface morphology and optical properties were studied by SEM and UV-Vis-NIR. It was found that the high-quality silica colloidal photonic crystals were obtained from ethanol solutions with environment temperature between 45℃ and 55℃, humidity between 66% and 76%, the volume fraction of microspheres is between 0.8% and 1.5%. The ordered close-packed photonic crystal fabricated by controllable vertical deposition method had the two photonic bandgaps in the visible light band and near infrared band. |
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| Keywords: | Photonic crystals Silica colloidal crystals Controllable vertical deposition Photonic bandgap |
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