Laterally grown show better performance: ZnO nanorods network based field effect transistors

  • Ashish Kumar
  • Tejendra Dixit
  • Kshitij Bhargava
  • I. A. Palani
  • Vipul Singh
Article
  • 175 Downloads

Abstract

In this work, ZnO based field effect transistors have been demonstrated using self-aligned nanorods (NRs) network synthesized through a facile hydrothermal route. To control the alignment and orientation of nanorods two additives viz. Potassium Permanganate (KMnO4) and Potassium Dichromate (K2Cr2O7) were added into the precursor solution. The effect of additive was studied through structural and optical characterization of nanorods. Further, these nanorods were used as an active layer in field effect transistors (FETs) and the estimated field effect mobility and current on/off ratio of the devices were 0.56 × 10−4 cm2/V s and 10 for vertically aligned and 9.04 cm2/V s and 6 × 103 for laterally aligned NRs network respectively. It was observed that the transport properties of charges are associated with the alignment, size, interface junctions of NRs/NRs or NRs/electrode and trap defects/states on the surface. The possible mechanism of charge transport in network path has been systematically discussed.

Keywords

Seed Layer Field Effect Transistor Drain Current HMTA Field Effect Mobility 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgements

Authors acknowledge Sophisticated Instrument Centre, IIT Indore for FESEM, XRD, and PL facilities. Further, A. K. would like to thank the Ministry of Human Resource Development (MHRD), India for providing the Teaching Assistantship (TA).

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Copyright information

© Springer Science+Business Media New York 2017

Authors and Affiliations

  • Ashish Kumar
    • 1
  • Tejendra Dixit
    • 1
  • Kshitij Bhargava
    • 1
  • I. A. Palani
    • 2
    • 3
  • Vipul Singh
    • 1
    • 3
  1. 1.Molecular and Nanoelectronics Research Group (MNRG), Department of Electrical EngineeringIIT IndoreIndoreIndia
  2. 2.Mechatronics and Instrumentation Lab, Department of Mechanical EngineeringIIT IndoreIndoreIndia
  3. 3.Centre of Material Science and EngineeringIIT IndoreIndoreIndia

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