Microcavity-Integrated Graphene Photodetector

被引：797

作者：

Furchi, Marco ^{[1
]}

Urich, Alexander ^{[1
]}

Pospischil, Andreas ^{[1
]}

Lilley, Govinda ^{[1
]}

Unterrainer, Karl ^{[1
]}

Detz, Hermann ^{[2
]}

Klang, Pavel ^{[2
]}

Andrews, Aaron Maxwell ^{[2
]}

Schrenk, Werner ^{[2
]}

Strasser, Gottfried ^{[2
]}

Mueller, Thomas ^{[1
]}

机构：

[1] Vienna Univ Technol, Inst Photon, A-1040 Vienna, Austria

[2] Vienna Univ Technol, Ctr Micro & Nanostruct, A-1040 Vienna, Austria

来源：

NANO LETTERS | 2012年 / 12卷 / 06期

基金：

奥地利科学基金会;

关键词：

Graphene; photodetector; microcavity; photoresponsivity; FILMS; GENERATION; DIODES; LASER;

D O I：

10.1021/nl204512x

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

There is an increasing interest in using graphene(1,2) for optoelectronic applications.(3-19) However, because graphene is an inherently weak optical absorber (only approximate to 2.3% absorption), novel concepts need to be developed to increase the absorption and take full advantage of its unique optical properties. We demonstrate that by monolithically integrating graphene with a Fabry-Perot microcavity, the optical absorption is 26-fold enhanced, reaching values >60%. We present a graphene-based microcavity photodetector with responsivity of 21 mA/W. Our approach can be applied to a variety of other graphene devices, such as electro-absorption modulators, variable optical attenuators, or light emitters, and provides a new route to graphene photonics with the potential for applications in communications, security, sensing and spectroscopy.

引用

页码：2773 / 2777

页数：5

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