Defect-induced enhancement and quenching control of photocurrent in few-layer graphene photodetectors

Prarthana Gowda, Tushar Sakorikar, Siva K. Reddy, Darim B. Ferry, Abha Misra

Research output: Contribution to journalArticlepeer-review

24 Scopus citations

Abstract

A novel approach is presented for achieving an enhanced photoresponse in a few layer graphene (FLG) based photodetector that is realized by introducing defect sites in the FLG. Fabrication induced wrinkle formation in graphene presented a four-fold enhancement in the photocurrent when compared to unfold FLG. Interestingly, it was observed that the addition of few multiwalled carbon nanotubes to an FLG improves the photocurrent by two-fold along with a highly stable response as compared to FLG alone.

Original languageEnglish
Pages (from-to)7485-7490
Number of pages6
JournalACS applied materials & interfaces
Volume6
Issue number10
DOIs
StatePublished - 28 May 2014
Externally publishedYes

Keywords

  • graphene
  • multiwalled carbon nanotubes
  • photocurrent
  • photodetector
  • wrinkled graphene

ASJC Scopus subject areas

  • Materials Science (all)

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