Temperature dependence of current-voltage characteristics of gold-strontium titanate thin film Schottky diode

Abstract

Gold-strontium titanate (Au-STO) Schottky diode is fabricated using pulsed laser deposition technique. The current-voltage characteristics of the device show non-linear behavior. The junction parameters such as ideality factor, barrier height, and series resistance are calculated using Cheung and Norde's methods. The effect of temperature on diode parameters is studied in details. It is observed that the barrier height varies almost linearly with temperature and the values increase from 0.39 to 0.72 eV in temperature range 150-300 K. The ideality factor decreases from 18 to 3 with increase in temperature from 150 to 300 K. High ideality factor suggests formation of non-ideal Schottky junction between gold and STO. © 2009 Elsevier B.V. All rights reserved.

Department(s)

Physics, Astronomy, and Materials Science

Document Type

Article

DOI

https://doi.org/10.1016/j.physe.2009.12.007

Keywords

Barrier height, Ideality factor, Junction, Pulsed laser, Strontium titanate

Publication Date

3-1-2010

Journal Title

Physica E: Low-Dimensional Systems and Nanostructures

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