含石墨烯缺陷的一维光子晶体吸收特性研究

量子电子学报

含石墨烯缺陷的一维光子晶体吸收特性研究

张茂婷，郑改革，吴红艳，饶伟锋

南京信息工程大学物理与光电工程学院电磁功能材料研究所，江苏南京 210044

发布日期:2019-06-11
通讯作者: 饶伟锋（1977-），江西人，博士，教授，从事信息功能材料方面的研究和教学。 E-mail: wfrao@nuist.edu.cn
作者简介:张茂婷（1994-），女，安徽人，研究生，从事光学微纳材料方面的研究。Email: mtzhang94@yahoo.com
基金资助:
Supported by National Natural Science Foundation of China(国家自然科学基金，61203211, 41675154)，Natural Science Foundation of Jiangsu Province(江苏省自然科学基金面上项目，BK20141483), Six Major Talent Peak expert of Jiangsu Province (江苏省“六大人才高峰”高层次人才项目, 2016L01, 2015-XXRJ-014), Grant of Specially-Appointed Professor of Jiangsu (江苏特聘教授, 31301009)

Absorption characteristics of one-dimensional photonic crystal with graphene-based defect

ZHANG Maoting, ZHENG Gaige, WU Hongyan, RAO Weifeng

Institute of Electronic and Magnetic Materials，School of Physics and Optoelectronic Engineering， Nanjing University of Information Science and Technology，Nanjing 210044，China

Online:2019-06-11

摘要/Abstract

摘要： 为了提高石墨烯的光吸收效率，提出了一种含有石墨烯缺陷的一维光子晶体模型。基于传输矩阵法对其在500 ～1000 nm范围内的吸收特性进行了理论计算和数值模拟，重点分析了其吸收特性与缺陷层后光子晶体的周期数、石墨烯层数、入射角度及匹配层厚度之间的关系。结果表明一维光子晶体引入石墨烯缺陷后形成了微腔结构，导致光的局域化，可将石墨烯对可见-近红外光波的吸收提高至100%；可通过改变光子晶体参数、缺陷层厚度来调控石墨烯的可见-近红外吸收；吸收峰随缺陷层厚度的增加出现了红移。

关键词: 光电子学, 石墨烯, 吸收, 一维光子晶体, 传输矩阵

Abstract: In order to enhance light absorption efficiency of graphene, a one-dimensional photonic crystal with graphene-based defect is proposed. Absorption characteristics of the structure are theoretically calculated and numerically simulated in the range from 500 nm to 1000 nm based on transfer matrix method (TMM). Dependence of absorption characteristics on period number of photonic crystal behind the defect layer, number of graphene layers, incident angle and thickness of matching layers is analyzed. Results show that the micro-cavity structure is formed after introducing graphene defects in one-dimensional photonic crystal, which causes the localization of light, and absorption of graphene is significantly improved to 100% from the visible to near-infrared bands. The visible and near-infrared absorption of grapheme can be controlled by changing parameters of photonic crystal and thickness of defect layers. The absorption peak appears red-shift with the increasing of defect layer thickness.

Key words: optoelectronics, graphene, absorption, one-dimensional photonic crystal, transfer matrix

张茂婷，郑改革，吴红艳，饶伟锋. 含石墨烯缺陷的一维光子晶体吸收特性研究[J]. 量子电子学报.

ZHANG Maoting, ZHENG Gaige, WU Hongyan, RAO Weifeng. Absorption characteristics of one-dimensional photonic crystal with graphene-based defect[J]. Chinese Journal of Quantum Electronics.

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