Affiliation:
1. King Mongkut’s Institute of Technology Ladkrabang
Abstract
In this paper, p-CuO/n-CdS heterojunction was prepared by thermal evaporating CdS thin films on CuO 1 mm thick ceramic pellet substrate. The electrical properties of p-CuO/n-CdS heterojunction were investigated by forward current–voltage–temperature (I–V–T) characteristics in the temperature range of 100-300 K. The junction barrier height, ideality factor, and the series resistance values of the diode evaluated by using thermionic emission (TE) theory and Cheung’s method are 0.566 eV, 5.535 and 618.24 Ω at 300 K, respectively. The junction barrier height, ideality factor and series resistance were found to be strong temperature dependence. In part of C-V measurements at room temperature, the obtained built-in potential value being 0.538 V is well consistent with the junction barrier height value evaluated from I-V measurements
Publisher
Trans Tech Publications, Ltd.
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