Temperature-dependent electrical properties for graphene Schottky contact on n-type Si with and without sulfide treatment

Yow Jon Lin, Jian Jhou Zeng, Hsing Cheng Chang

研究成果: Article同行評審

16 引文 斯高帕斯(Scopus)

摘要

The temperature-dependent current–voltage (I–V) characteristics of graphene/n-type Si Schottky diodes with and without sulfide treatment were measured in the temperature range of 150–420 K. The temperature dependence of forward-bias I–V characteristics can be explained on the basis of the thermionic emission theory by assuming the presence of Gaussian distribution of the barrier heights. The graphene/n-type Si device with sulfide treatment exhibits a good rectifying behavior with the ideality factor of 1.8 and low leakage at 300 K. The enhanced device performance is considered to mainly come from the presence of Si–S bonds that serve to improve the Schottky barrier inhomogeneity. Compared to the fitting data for the temperature-dependent reverse-bias I–V characteristics of graphene/n-type Si devices without sulfide treatment, the fitting data for the temperature-dependent reverse-bias I–V characteristics of graphene/n-type Si devices with sulfide treatment show that a higher barrier height for hopping result in a lower leakage current. This is because of more homogenous barrier height for graphene/n-type Si devices with sulfide treatment.

原文English
頁(從 - 到)353-359
頁數7
期刊Applied Physics A: Materials Science and Processing
118
發行號1
DOIs
出版狀態Published - 2014 一月

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)

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