Planar carbon nanotube-graphene hybrid films for high-performance broadband photodetectors

被引：268

作者：

Liu, Yuanda ^{[1
,2
]}

Wang, Fengqiu ^{[1
,2
]}

Wang, Xiaomu ^{[3
]}

Wang, Xizhang ^{[4
]}

Flahaut, Emmanuel ^{[5
,6
]}

Liu, Xiaolong ^{[1
,2
]}

Li, Yao ^{[1
,2
]}

Wang, Xinran ^{[1
,2
]}

Xu, Yongbing ^{[1
,2
]}

Shi, Yi ^{[1
,2
]}

Zhang, Rong ^{[1
,2
]}

机构：

[1] Nanjing Univ, Sch Elect Sci & Engn, Nanjing 210093, Jiangsu, Peoples R China

[2] Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Jiangsu, Peoples R China

[3] Yale Univ, Dept Elect Engn, New Haven, CT 06511 USA

[4] Nanjing Univ, Sch Chem & Chem Engn, Nanjing 210093, Jiangsu, Peoples R China

[5] CNRS, Inst Carnot Cirimat, F-31062 Toulouse, France

[6] Univ Toulouse, UPS, INP, Inst Carnot Cirimat, F-31062 Toulouse 9, France

来源：

NATURE COMMUNICATIONS | 2015年 / 6卷

基金：

中国国家自然科学基金; 中国博士后科学基金;

关键词：

ELECTRONIC-STRUCTURE; PILLARED GRAPHENE; THIN-FILM; NANOSTRUCTURE; LAYER;

D O I：

10.1038/ncomms9589

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：

Graphene has emerged as a promising material for photonic applications fuelled by its superior electronic and optical properties. However, the photoresponsivity is limited by the low absorption cross-section and ultrafast recombination rates of photoexcited carriers. Here we demonstrate a photoconductive gain of similar to 10(5) electrons per photon in a carbon nanotube-graphene hybrid due to efficient photocarriers generation and transport within the nanostructure. A broadband photodetector (covering 400-1,550 nm) based on such hybrid films is fabricated with a high photoresponsivity of >100 AW(-1) and a fast response time of similar to 100 mu s. The combination of ultra-broad bandwidth, high responsivities and fast operating speeds affords new opportunities for facile and scalable fabrication of all-carbon optoelectronic devices.

引用

页数：7

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