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Electrical Response of CdS Thin Film and CdS/Si Heterojunction to Gamma Radiation

  • Egyptian Atomic Energy Authority
  • Ain Shams University

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

Gamma irradiation method has been used to change the electrical properties of CdS thin film. A specific dose of γ-irradiation increases the activation energy of CdS thin film. In addition, γ-irradiation was used to change the sign of Hall coefficient, RH, of CdS thin film from negative to positive irrespective of temperature. The Hall mobility mechanism shows noticeable change after γ-irradiation from decreasing to increasing with raising the temperature. In depth, analysis was done using capacitance-voltage measurement in order to realize the modification in the CdS/Si junction band gap after γ-irradiation. Several parameters were also studied such as charge carrier concentration, ND, and flat band potential, Vfb. The γ-irradiation was found to increase the concentration of the deep traps within the band gap of the CdS/Si heterojunction.

Original languageEnglish
Article number3183909
JournalAdvances in Materials Science and Engineering
Volume2016
DOIs
StatePublished - 2016
Externally publishedYes

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