个人信息Personal Information
教授
博士生导师
硕士生导师
主要任职:化学学院院长,化学学院党委副书记
性别:男
毕业院校:北京市清华大学
学位:博士
所在单位:化学学院
学科:无机化学. 物理化学. 化学工程
电子邮箱:taosy@dlut.edu.cn
A general strategy to fabricate photonic crystal heterostructure with Programmed photonic stopband
点击次数:
论文类型:期刊论文
第一作者:Zhang, Lijing
通讯作者:Tao, SY (reprint author), Dalian Univ Technol, Dept Chem, Dalian 116024, Liaoning, Peoples R China.; Yan, QF (reprint author), Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China.
合写作者:Liu, Bofan,Wang, Jie,Tao, Shengyang,Yan, Qingfeng
发表时间:2018-01-01
发表刊物:JOURNAL OF COLLOID AND INTERFACE SCIENCE
收录刊物:SCIE、EI、PubMed
卷号:509
页面范围:318-326
ISSN号:0021-9797
关键字:Photonic crystal heterostructure; Photonic stopband; Stopband regulation rule; Multi-stopbands; Ultra-wide stopband; Fluorescence enhancement
摘要:In this paper, we present a general fabrication strategy to achieve the structure control and the flexible photonic stop band regulation of (2 + 1) D photonic crystal heterostructures (PCHs) by layer-by-layer depositing the annealed colloidal crystal monolayers of different sphere size. The optical properties of the resulting (2 + 1) D PCHs with different lattice constants were systematically studied and a universal photonic stopband variation rule was proposed, which makes it possible to program any kind of stopband structure as required, such as dual- or multi-stopbands PCH and ultra-wide stopband PCH. Furthermore, PCH with dual-stopbands overlapping the excitation wavelength (E) and emission wavelength(F) of Ru complex was fabricated by finely manipulating the spheres' diameter of colloidal monolayers. And an additional 2-fold fluorescence enhancement in comparison to that on the single stopband sample was achieved. This strategy affords new opportunities for delicate engineering the photonic behaviour of PCH, and also is of great significance for the practical application based on their bandgap property. (C) 2017 Elsevier Inc. All rights reserved.