• 文献标题:   Preparation and characterization of cross-linked poly (vinylalcohol)-graphene oxide nanocomposites as an interlayer forSchotty barrier diodes
  • 文献类型:   Article
  • 作  者:   BADRINEZHAD L, BILKAN C, AZIZIANKALANDARAGH Y, NEMATOLLAHZADEH A, ORAK I, ALTINDAL S
  • 作者关键词:   graphene oxide, nanocomposite, poly vinyl alcohol, crosslink, schottky barrier diodes sbds
  • 出版物名称:   INTERNATIONAL JOURNAL OF MODERN PHYSICS B
  • ISSN:   0217-9792 EI 1793-6578
  • 通讯作者地址:   Univ Mohaghegh Ardabili
  • 被引频次:   1
  • DOI:   10.1142/S0217979217502769
  • 出版年:   2018

▎ 摘  要

Cross-linked polyvinyl alcohol (PVA) graphene oxide (GO) nanocomposites were prepared by simple solution-mixing route and characterized by Raman, UV visible and fourier transform infrared (FT-IR) spectroscopy analysis, X-ray diffraction (XRD) and scanning electron microscopy (SEM) techniques. The XRD pattern and SEM analysis showed significant changes in the nanocomposite structures, and the FT-IR spectroscopy results confirmed the chemical interaction between the GO filler and the PVA matrix. After these morphological characterizations, PVA-GO-based diodes were fabricated and their electrical properties were characterized using current voltage (I-V) and impedance-voltage-frequency (Z-V-f) measurements at room temperature. Semilogarithmic I-V characteristics of diode showed a good rectifier behavior. The values of C and G/w increased with decreasing frequency due to the surface/interface states (N-ss) which depend on the relaxation time and the frequency of the signal. The voltage, dependent profiles of N-ss and series resistance (Re) were obtained from the methods of high-low frequency capacitance and Nicollian and Brews, respectively. The obtained values of N-ss and R-s were attributed to the use of cross-linked PVA-GO interlayer at the Au/n-Si interface.