Indian Journal of Physics

, Volume 93, Issue 4, pp 467–474 | Cite as

Barrier enhancement of Al/n-InP Schottky diodes by graphene oxide thin layer

  • Omer GulluEmail author
  • Murat Cankaya
  • V. Rajagopal ReddyEmail author
Original Paper


In the present work, the surface morphology, structural and optical features of graphene oxide (GO) films are investigated. The Al/GO/n-InP MIS diode is formed by depositing GO layer on n-InP wafer for the barrier enhancement. Interfacial properties of the MIS diode with GO interlayer are extracted from current–voltage (IV) measurement. The simple diode parameters such as barrier height and ideality factor are extracted from IV plots, and the values are compared with those of conventional Al/n-InP MS contact. The value of barrier height (BH) for the Al/GO/n-InP contact is found as 0.85 eV. The BH value of 0.85 eV of the Al/GO/n-InP MIS structure is as high as around 100% compared to the value of 0.43 eV of the Al/n-InP reference contacts. We have showed that the value of 0.85 eV is one of the highest values presented for reference contacts with an interlayer.


Graphene oxide Thin films Band gap MIS diode X-ray diffraction 


73.22.Pr 73.40.Sx 73.30. + y 72.20.-i 



This study is partly supported by Republic of Turkey Prime Ministry State Planning organization (DPT) (Project Number: 2010K120610, Batman University Central Research Laboratory).


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Copyright information

© Indian Association for the Cultivation of Science 2018

Authors and Affiliations

  1. 1.Faculty of Sciences and ArtsUniversity of BatmanBatmanTurkey
  2. 2.Department of Biochemistry, Faculty of Sciences and ArtsUniversity of ErzincanErzincanTurkey
  3. 3.Department of PhysicsSri Venkateswara UniversityTirupatiIndia

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