中国物理B ›› 2016, Vol. 25 ›› Issue (11): 118103-118103.doi: 10.1088/1674-1056/25/11/118103

• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇    下一篇

Bolometric effect in a waveguide-integrated graphene photodetector

Yubing Wang(王玉冰), Weihong Yin(尹伟红), Qin Han(韩勤), Xiaohong Yang(杨晓红), Han Ye(叶焓), Qianqian Lv(吕倩倩), Dongdong Yin(尹冬冬)   

  1. State Key Laboratory on Integrated Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China
  • 收稿日期:2016-06-20 修回日期:2016-07-13 出版日期:2016-11-05 发布日期:2016-11-05
  • 通讯作者: Qin Han E-mail:hanqin@semi.ac.cn
  • 基金资助:

    Project supported by the National Key Research and Development Program of China (Grant No. 2016YFB0402204), the High-Tech Research and Development Program of China (Grant Nos. 2013AA031401, 2015AA016902, and 2015AA016904), and the National Natural Science Foundation of China (Grant Nos. 61674136, 61176053, 61274069, and 61435002).

Bolometric effect in a waveguide-integrated graphene photodetector

Yubing Wang(王玉冰), Weihong Yin(尹伟红), Qin Han(韩勤), Xiaohong Yang(杨晓红), Han Ye(叶焓), Qianqian Lv(吕倩倩), Dongdong Yin(尹冬冬)   

  1. State Key Laboratory on Integrated Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China
  • Received:2016-06-20 Revised:2016-07-13 Online:2016-11-05 Published:2016-11-05
  • Contact: Qin Han E-mail:hanqin@semi.ac.cn
  • Supported by:

    Project supported by the National Key Research and Development Program of China (Grant No. 2016YFB0402204), the High-Tech Research and Development Program of China (Grant Nos. 2013AA031401, 2015AA016902, and 2015AA016904), and the National Natural Science Foundation of China (Grant Nos. 61674136, 61176053, 61274069, and 61435002).

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摘要：

Graphene is an alternative material for photodetectors owing to its unique properties. These include its uniform absorption of light from ultraviolet to infrared and its ultrahigh mobility for both electrons and holes. Unfortunately, due to the low absorption of light, the photoresponsivity of graphene-based photodetectors is usually low, only a few milliamps per watt. In this letter, we fabricate a waveguide-integrated graphene photodetector. A photoresponsivity exceeding 0.11 A·W-1 is obtained which enables most optoelectronic applications. The dominating mechanism of photoresponse is investigated and is attributed to the photo-induced bolometric effect. Theoretical calculation shows that the bolometric photoresponsivity is 4.6 A·W-1. The absorption coefficient of the device is estimated to be 0.27 dB·μ-1.

关键词: graphene photodetector, graphene bolometer, bolometric effect, waveguide integration

Abstract:

Graphene is an alternative material for photodetectors owing to its unique properties. These include its uniform absorption of light from ultraviolet to infrared and its ultrahigh mobility for both electrons and holes. Unfortunately, due to the low absorption of light, the photoresponsivity of graphene-based photodetectors is usually low, only a few milliamps per watt. In this letter, we fabricate a waveguide-integrated graphene photodetector. A photoresponsivity exceeding 0.11 A·W-1 is obtained which enables most optoelectronic applications. The dominating mechanism of photoresponse is investigated and is attributed to the photo-induced bolometric effect. Theoretical calculation shows that the bolometric photoresponsivity is 4.6 A·W-1. The absorption coefficient of the device is estimated to be 0.27 dB·μ-1.

Key words: graphene photodetector, graphene bolometer, bolometric effect, waveguide integration

中图分类号:  (Graphene)

  • 81.05.ue
85.60.Dw (Photodiodes; phototransistors; photoresistors)