高等学校化学学报 ›› 2012, Vol. 33 ›› Issue (12): 2771-2778.doi: 10.7503/cjcu20120581

• 高分子化学 • 上一篇    下一篇

梯度结构胶体光子晶体的制备及光子禁带调节

陈俊波, 黄贺, 张刚   

  1. 吉林大学超分子结构与材料国家重点实验室, 长春 130012
  • 收稿日期:2012-06-17 出版日期:2012-12-10 发布日期:2012-11-20
  • 通讯作者: 张刚,男,博士,教授,主要从事高分子有序微结构与胶体界面组装研究.E-mail:gang@jlu.edu.cn E-mail:gang@jlu.edu.cn
  • 基金资助:

    国家自然科学基金(批准号: 51073070, 51173068)资助.

Fabrication and PBG Modification of Gradient Colloidal Photonic Crystal

CHEN Jun-Bo, HUANG He, ZHANG Gang   

  1. State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun 130012, China
  • Received:2012-06-17 Online:2012-12-10 Published:2012-11-20
  • Contact: ZHANG Gang E-mail:gang@jlu.edu.cn

摘要:

以改进的对流自组装方法制备层数可控的胶体光子晶体, 并通过各向同性氧等离子体(O2 Plasma)刻蚀构造出梯度结构, 进一步通过金(Au)及无定形硅(Si)的可控沉积调节梯度结构胶体光子晶体的光子禁带, 并将该梯度结构用于罗丹明B的荧光发射增强.

关键词: 胶体晶体, 光子晶体, 梯度结构, 光子禁带

Abstract:

Colloidal photonic crystals with controllable layers were fabricated by improved convective self-assembly method, and isotropic O2 plasma etching was used to construct gradient structure. The gradient(along the surface normal) could be controlled by plasma treatment, leading to a wider tuning range of the stop band compared with colloidal photonic crystals without gradient. The photonic band gap(PBG) of the gradient colloidal photonic crystal was modified through controllable deposition of gold and amorphous silicon. Furthermore, a fluorescent molecule(Rhodamine B) was penetrated into the interstice of gradient colloidal crystals, and it exhibited an 8.6-fold enhancement of fluorescence emission. According to the tunable optical property of gradient colloidal photonic crystals(GCPCs), they could be used in fields such as photonics, catalysis and life science.

Key words: Colloidal crystal, Photonic crystal, Gradient structure, Photonic band gap(PBG)

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