Carrier transport and photoresponse for heterojunction diodes based on the reduced graphene oxide-based TiO2 composite and p-type Si

Yow-Jon Lin, Shih Hung Yang

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3 Citations (Scopus)


The present work reports the fabrication and detailed electrical properties of heterojunction diodes based on p-type Si and the reduced graphene oxide-based TiO2 (TiO2:RGO) composite. The enhanced dark conductivity was observed for TiO2:RGO composite films. The improved electrical conductivity is considered to mainly come from the mobility enhancement. The TiO2/p-type Si diode shows a poor rectifying behavior and low photoresponse. This is because of the dominance of electron traps in TiO2. However, the TiO2:RGO/p-type Si diode shows a good rectifying behavior and high photoresponse, which is attributed to high-mobility electron transport combined with the reduced number of electron traps.

Original languageEnglish
Pages (from-to)91-95
Number of pages5
JournalApplied Physics A: Materials Science and Processing
Issue number1
Publication statusPublished - 2014 Jan 1


All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)

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