Interface engineering in two-dimensional heterostructures towards novel emitters
Interface engineering in two-dimensional heterostructures towards novel emitters
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二维异质结构中新型发射器的界面工程
DOI：
10.1088/1674-4926/44/1/011001
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发表时间：
2023-01
影响因子：
5.1
通讯作者：
Xu Weigao
中科院分区：
文献类型：
--
作者：
Li Hua;Ling Jinyang;Lin Jiamin;Lu Xin;Xu Weigao
二维（2D）半导体由于其独特的激子效应而作为光发射体引起了广泛的兴趣。这些层块可以通过货车德瓦耳斯装配集成，即，制造同质或异质结，其显示由界面工程引起的新颖的发射性质。在这篇综述中，我们将首先概述界面工程中采用的基本策略，包括改变组分，调整层间间隙和调谐扭转角。通过对界面因子的修正，揭示和讨论了激子新的发光特性。通常，2D异质结构内精心设计的界面能量转移和电荷转移会导致层内激子亮度的静态调制。作为一种特殊情况，我们将介绍弱耦合双层膜中的动态相关双色发光，它起源于间歇的层间电荷转移。对于均质双层和Ⅱ型异质双层，电子和空穴位于相邻层的层间激子是本文的另一个重要研究内容。此外，两个晶格的重叠形成具有相对大的周期的莫尔图案，从而影响层内和层间激子。特别是，具有超尖线宽和量子发射特性的空间调制莫尔激子的理论和实验进展将被重点介绍。莫尔量子发射体提供了一种均匀的、可集成的单光子发射体阵列，这在量子多体模拟和量子信息处理中是必不可少的。二维异质结由于具有可光学寻址的自旋和谷指数，已成为研究激子物理、设计和集成新概念发射器不可或缺的平台。
Two-dimensional (2D) semiconductors have captured broad interest as light emitters, due to their unique excitonic effects. These layer-blocks can be integrated through van der Waals assembly, i.e., fabricating homo- or heterojunctions, which show novel emission properties caused by interface engineering. In this review, we will first give an overview of the basic strategies that have been employed in interface engineering, including changing components, adjusting interlayer gap, and tuning twist angle. By modifying the interfacial factors, novel emission properties of emerging excitons are unveiled and discussed. Generally, well-tailored interfacial energy transfer and charge transfer within a 2D heterostructure cause static modulation of the brightness of intralayer excitons. As a special case, dynamically correlated dual-color emission in weakly-coupled bilayers will be introduced, which originates from intermittent interlayer charge transfer. For homobilayers and type Ⅱ heterobilayers, interlayer excitons with electrons and holes residing in neighboring layers are another important topic in this review. Moreover, the overlap of two crystal lattices forms moiré patterns with a relatively large period, taking effect on intralayer and interlayer excitons. Particularly, theoretical and experimental progresses on spatially modulated moiré excitons with ultra-sharp linewidth and quantum emission properties will be highlighted. Moiré quantum emitter provides uniform and integratable arrays of single photon emitters that are previously inaccessible, which is essential in quantum many-body simulation and quantum information processing. Benefiting from the optically addressable spin and valley indices, 2D heterostructures have become an indispensable platform for investigating exciton physics, designing and integrating novel concept emitters.
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DOI：
10.1038/s43586-022-00151-5
发表时间：
2014-03
期刊：
Nature Reviews Methods Primers
影响因子：
--
作者：
R. Gorbachev
通讯作者：
R. Gorbachev
利用原子级精确的层间邻近度控制二维异质结构中的激子和谷动力学
影响因子：
17.1
作者：
Zhou Hongzhi;Zhao Yida;Tao Weijian;Li Yujie;Zhou Qiaohui;Zhu Haiming
通讯作者：
Zhu Haiming
影响因子：
16.6
作者：
Raja A;Chaves A;Yu J;Arefe G;Hill HM;Rigosi AF;Berkelbach TC;Nagler P;Schüller C;Korn T;Nuckolls C;Hone J;Brus LE;Heinz TF;Reichman DR;Chernikov A
通讯作者：
Chernikov A
扭曲 WSe(2)/WSe(2) 同双层超晶格中莫尔层内激子的证据。
影响因子：
19.4
作者：
Wu, Biao;Zheng, Haihong;Li, Shaofei;Ding, Junnan;He, Jun;Zeng, Yujia;Chen, Keqiu;Liu, Zongwen;Chen, Shula;Pan, Anlian;Liu, Yanping
通讯作者：
Liu, Yanping
影响因子：
3.7
作者：
Kosmider, K.;Gonzalez, J. W.;Fernandez-Rossier, J.
通讯作者：
Fernandez-Rossier, J.