Temperature dependence of current-voltage characteristics of Pt/InN Schottky barrier diodes: International Conference on the Physics of Semiconductors

Victor-Tapio Rangel-Kuoppa, Sami Suihkonen, Markku Sopanen, Harri Lipsanen, MJ Caldas (Editor), N Studart (Editor)

Research output: Contribution to journalArticle in a proceedings journalScientificpeer-review

Abstract

The Current-Voltage (IV) measurements on Pt/InN Schottky barrier diodes in the temperature range 10-280 K were done. It was found that the contact was Schottky up to 280 K, becoming irreversible ohmic for higher temperatures. The ideality factor, the saturation current and the apparent barrier height were calculated by using the thermionic emission (TE) theory. The ideality factor is temperature dependent, while the saturation current and the barrier height are not. The non conventional Richardson plot exhibits good linearity, corresponding to an activation energy of 2.08 eV and a Richardson constant of 18.7Am -2K-2. The Cheung's method to estimate the value of a possible series resistance RS yields a negligible resistance. From reverse-bias IV analysis, it is found that the experimental carrier density (ND) value increases with temperature. © 2009 American Institute of Physics.
Original languageEnglish
Number of pages2
JournalAIP Conference Proceedings
Volume1199
Issue number1
DOIs
Publication statusPublished - 2009
MoE publication typeA4 Article in a conference publication

Keywords

  • Carrier density
  • Electron affinity
  • InN
  • IV
  • IVT
  • Pt contact
  • Richardson constant
  • Schottky contact
  • Temperature dependence

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