High performance photodetectors based on two-dimensional materials

Shaojuan Li, Yusheng Wang, Hong Qiao, Jian Yuan, Qiaoliang Bao

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review

Abstract

Combing graphene and other two-dimentional materials in heterostructure or the hybridization of graphene with a gain material for photodetection offers the possiblity to expand the wavelength range of operation and improve performance. Here, we fabricated two novel photodetectors based on graphene-Bi2Te3 heterostructure and hybrid graphene-perovskite islands, respectively. Our results show that the graphene-Bi2Te3 photodetector has a photoresponsivity of 35 AW-1 at a wavelength of 532 nm and an expanded detection wavelength range further to near-infrared (NIR) (980 nm) and telecommunication band (1550 nm). On the other hand, the hybrid graphene-perovskite phototransistros show a photoconductive gain of ∼109 electrons per photon and a responsivity of ∼6.0×105 AW-1 with a broadband detection from ultraviolet (UV) to visible (250-700 nm).

Original languageEnglish
Title of host publication2015 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications, (IMWS-AMP 2015) - Proceedings
Subtitle of host publicationSuzhou, China; 1-3 July 2015
Place of PublicationPiscataway NJ USA
PublisherIEEE, Institute of Electrical and Electronics Engineers
Pages217-219
Number of pages3
ISBN (Electronic)9781479964505
DOIs
Publication statusPublished - 10 Nov 2015
EventIEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications 2015 - Suzhou, China
Duration: 1 Jul 20153 Jul 2015
https://searchworks.stanford.edu/view/11941209

Workshop

WorkshopIEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications 2015
Abbreviated titleIMWS-AMP 2015
CountryChina
CitySuzhou
Period1/07/153/07/15
Internet address

Keywords

  • Graphene
  • heterostructure
  • peroskite
  • photodetector

Cite this