Barrier modification of Au/n-GaAs Schottky structure by organic interlayer
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  • 作者:A. Bobby ; N. Shiwakoti ; P. S. Gupta ; B. K. Antony
  • 关键词:Au/n ; GaAs ; Schottky contacts ; Interface modification ; Organic interlayer ; 73.30. + y ; 73.40. ; c ; 73.40.Qv ; 73.50.Gr ; 68.08. ; p
  • 刊名:Indian Journal of Physics
  • 出版年:2016
  • 出版时间:March 2016
  • 年:2016
  • 卷:90
  • 期:3
  • 页码:307-312
  • 全文大小:1,114 KB
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  • 作者单位:A. Bobby (1)
    N. Shiwakoti (1)
    P. S. Gupta (1)
    B. K. Antony (1)

    1. Department of Applied Physics, Indian School of Mines, Dhanbad, 826004, India
  • 刊物类别:Physics and Astronomy
  • 刊物主题:Physics
    Astronomy
    Astronomy, Astrophysics and Cosmology
    Physics
  • 出版者:Springer India
  • ISSN:0974-9845
文摘
Schottky contacts of Au/n-GaAs diodes with and without organic interlayer were fabricated. The room-temperature I–V and C–V characteristics were analyzed in both forward and reverse bias conditions. The forward current followed thermionic emission, whereas the reverse current followed tunneling mechanism. The barrier height of the modified structure revealed an enhancement due to organic interlayer compared to the pure diode. The increment was explained on the basis of organic interlayer-induced dipole at the interface. The modification was also found to passivate the GaAs surface and reduce the reverse leakage current. Keywords Au/n-GaAs Schottky contacts Interface modification Organic interlayer
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