Strong Light-Matter Interactions in Heterostructures of Atomically Thin Films

被引：2200

作者：

Britnell, L. ^{[1
]}

Ribeiro, R. M. ^{[2
,3
,4
]}

Eckmann, A. ^{[5
,6
]}

Jalil, R. ^{[7
]}

Belle, B. D. ^{[7
]}

Mishchenko, A. ^{[1
]}

Kim, Y. -J. ^{[1
,8
]}

Gorbachev, R. V. ^{[1
]}

Georgiou, T. ^{[1
]}

Morozov, S. V. ^{[9
]}

Grigorenko, A. N. ^{[1
]}

Geim, A. K. ^{[7
]}

Casiraghi, C. ^{[5
,6
,10
]}

Castro Neto, A. H. ^{[2
]}

Novoselov, K. S. ^{[1
]}

机构：

[1] Univ Manchester, Sch Phys & Astron, Manchester M13 9PL, Lancs, England

[2] Natl Univ Singapore, Graphene Res Ctr, Singapore 117546, Singapore

[3] Univ Minho, Dept Fis, P-4710057 Braga, Portugal

[4] Univ Minho, Ctr Fis, P-4710057 Braga, Portugal

[5] Univ Manchester, Sch Chem, Manchester M13 9PL, Lancs, England

[6] Univ Manchester, Photon Sci Inst, Manchester M13 9PL, Lancs, England

[7] Univ Manchester, Manchester Ctr Mesosci & Nanotechnol, Manchester M13 9PL, Lancs, England

[8] Seoul Natl Univ, Coll Nat Sci, Dept Chem, Seoul 151747, South Korea

[9] Russian Acad Sci, Inst Microelect Technol, Chernogolovka 142432, Russia

[10] Free Univ Berlin, Dept Phys, D-14195 Berlin, Germany

来源：

SCIENCE | 2013年 / 340卷 / 6138期

基金：

英国工程与自然科学研究理事会; 瑞士国家科学基金会; 新加坡国家研究基金会; 欧洲研究理事会;

关键词：

TRANSITION-METAL DICHALCOGENIDES; DOUBLE-LAYER GRAPHENE; ELECTRONICS; SEMICONDUCTORS; SPECTROSCOPY; MOS2; SE;

D O I：

10.1126/science.1235547

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The isolation of various two-dimensional (2D) materials, and the possibility to combine them in vertical stacks, has created a new paradigm in materials science: heterostructures based on 2D crystals. Such a concept has already proven fruitful for a number of electronic applications in the area of ultrathin and flexible devices. Here, we expand the range of such structures to photoactive ones by using semiconducting transition metal dichalcogenides (TMDCs)/graphene stacks. Van Hove singularities in the electronic density of states of TMDC guarantees enhanced light-matter interactions, leading to enhanced photon absorption and electron-hole creation (which are collected in transparent graphene electrodes). This allows development of extremely efficient flexible photovoltaic devices with photoresponsivity above 0.1 ampere per watt (corresponding to an external quantum efficiency of above 30%).

引用

页码：1311 / 1314

页数：4

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