Biologically inspired graphene-chlorophyll phototransistors with high gain

被引：95

作者：

Chen, Shao-Yu ^{[1
]}

Lu, Yi-Ying ^{[1
,2
]}

Shih, Fu-Yu ^{[1
,3
]}

Ho, Po-Hsun ^{[4
]}

Chen, Yang-Fang ^{[3
]}

Chen, Chun-Wei ^{[4
]}

Chen, Yit-Tsong ^{[1
,2
]}

Wang, Wei-Hua ^{[1
]}

机构：

[1] Acad Sinica, Inst Atom & Mol Sci, Taipei 106, Taiwan

[2] Natl Taiwan Univ, Dept Chem, Taipei 106, Taiwan

[3] Natl Taiwan Univ, Dept Phys, Taipei 106, Taiwan

[4] Natl Taiwan Univ, Dept Mat Sci & Engn, Taipei 106, Taiwan

来源：

CARBON | 2013年 / 63卷

关键词：

LEVEL ALIGNMENT; PORPHYRINS; PLASMONICS; PHOTONICS; FILMS;

D O I：

10.1016/j.carbon.2013.06.031

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We present prominent photoresponse of bio-inspired graphene-based phototransistors sensitized with chlorophyll molecules. The hybrid graphene-chlorophyll phototransistors exhibit a high gain of 10(6) electrons per photon and a high responsivity of 10(6) A/W, which can be attributed to the integration of high-mobility graphene and the photosensitive chlorophyll molecules. The charge transfer at interface and the photogating effect in the chlorophyll layer can account for the observed photoresponse of the hybrid devices, which is confirmed by the back-gate-tunable photocurrent as well as the thickness and time dependent studies of the photoresponse. The demonstration of the graphene-chlorophyll phototransistors with high gain envisions a viable method to employ biomaterials for graphenebased optoelectronics. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：23 / 29

页数：7

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