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Modification of schottky barrier properties of Ti/p-type InP schottky diode by polyaniline (PANI) organic interlayer

  • P. R. Sekhar Reddy
  • , V. Janardhanam
  • , I. Jyothi
  • , Shim Hoon Yuk
  • , V. Rajagopal Reddy
  • , Jae Chan Jeong
  • , Sung Nam Lee
  • , Chel Jong Choi*
  • *Corresponding author for this work
  • Jeonbuk National University
  • Sri Venkateswara University
  • Electronics and Telecommunications Research Institute
  • Tech University of Korea

Research output: Contribution to journalJournal articlepeer-review

Abstract

The electrical properties of Ti/p-type InP Schottky diodes with and without polyaniline (PANI) interlayer was investigated using current–voltage (I– V) and capacitance–voltage (C–V) measurements. The barrier height of Ti/p-type InP Schottky diode with PANI interlayer was higher than that of the conventional Ti/p-type InP Schottky diode, implying that the organic interlayer influenced the spacecharge region of the Ti/p-type InP Schottky junction. At higher voltages, the current transport was dominated by the trap free space-charge-limited current and trap-filled space-charge-limited current in Ti/p-type InP Schottky diode without and with PANI interlayer, respectively. The domination of trap filled space-charge-limited current in Ti/p-type InP Schottky diode with PANI interlayer could be associated with the traps originated from structural defects prevailing in organic PANI interlayer.

Original languageEnglish
Pages (from-to)664-674
Number of pages11
JournalJournal of Semiconductor Technology and Science
Volume16
Issue number5
DOIs
StatePublished - 2016.10

Keywords

  • Barrier height
  • InP
  • Interface state density
  • PANI
  • Schottky diode

Quacquarelli Symonds(QS) Subject Topics

  • Materials Science
  • Engineering - Electrical & Electronic
  • Engineering - Petroleum

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