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二维过渡金属硫属化合物的激光发射

Laser Emission on Two-Dimensional Transition Metal Dichalcogenides

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摘要

以二硫化钼(MoS2)为代表的二维过渡金属硫属化合物(TMDs)具有随厚度/层数变化的光学和电学性质,并且展示出独特的激子效应和较高的光学量子产率,在光电子器件中具有很好的应用前景。近年来,基于TMDs材料的光学性质和光电子器件的研究进展迅速,如通过电场、化学掺杂、缺陷等方式实现了对其光致发光(PL)的调控,并极大地提高了PL发射量子产率;基于TMDs边带异质结和垂直异质结的LEDs被广泛研究并获得了较高的光发射效率;以TMDs作为增益介质,并将其与微盘、光子晶体空腔等耦合实现了低阈值激光发射。从TMDs的结构和光学性质出发,总结了TMDs材料PL的调控手段及效果,并介绍TMDs中激光发射的研究进展,最后对基于TMDs的激光发展进行了展望。

Abstract

Two-dimensional transition metal dichalcogenides (TMDs) such as MoS2 have different optical and electrical properties with the change of thickness and layer number, and exhibit unique excitonic behavior and high optical quantum efficiency, thus they have great potential applications in optoelectronic devices. Recently, there are great progresses on the studies of optical properties and related optoelectronic devices of TMDs. For example, the photoluminescence (PL) of TMD materials can be modulated through the electric field, chemical doping and defects engineering, and the PL quantum efficiency is greatly enhanced. The LEDs based on lateral and vertical heterojunctions stacked by TMD materials are extensively investigated and the high light emission efficiency is demonstrated. The laser emission with low threshold is also realized using TMDs as gain medium and integrated with micro disk and photonic crystals. This review starts from the structures and optical properties of TMDs, summarizes PL modulation methods and effects of TMD materials, introduces the research progresses of laser emission of TMDs, and finally the laser future development based on TMDs is prospected.

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中图分类号:O439

DOI:10.3788/lop54.040003

所属栏目:综述

基金项目:国家自然科学基金(61422503,61376104)、中央高校基本科研业务费专项资金(3207026405)

收稿日期:2016-09-18

修改稿日期:2016-10-27

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郑婷:东南大学物理系, 江苏 南京 211189
南海燕:东南大学物理系, 江苏 南京 211189
吴章婷:东南大学物理系, 江苏 南京 211189
倪振华:东南大学物理系, 江苏 南京 211189

联系人作者:郑婷(zhengtingdn@163.com)

备注:郑婷(1993-),女,硕士研究生,主要从事光电子学方面的研究。

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引用该论文

Zheng Ting,Nan Haiyan,Wu Zhangting,Ni Zhenhua. Laser Emission on Two-Dimensional Transition Metal Dichalcogenides[J]. Laser & Optoelectronics Progress, 2017, 54(4): 040003

郑婷,南海燕,吴章婷,倪振华. 二维过渡金属硫属化合物的激光发射[J]. 激光与光电子学进展, 2017, 54(4): 040003

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