Please use this identifier to cite or link to this item: http://ir.juit.ac.in:8080/jspui/jspui/handle/123456789/9112
Title: Role of metallic-like conductivity in unusual temperature-dependent transport in n-ZnO : Al/p-Si heterojunction diode
Authors: Kumar, Mohit
Hazra, S K
Som, Tapobrata
Keywords: Thin films
Vacancy formation
Issue Date: 2015
Publisher: Jaypee University of Information Technology, Solan, H.P.
Abstract: The current–voltage characteristics of an n-ZnO : Al(AZO)/p-Si heterojunction diode is investigated over a temperature range of 293 and 423 K. The measured current–voltage characteristics show good rectification behaviour at all temperatures. It is observed that the AZO/Si heterojunction exhibits different (unusual) types of charge conduction processes in the temperature range under consideration. In addition, temperature-dependent resistivity measurements performed on a AZO thin film grown on a glass substrate show metallic-like conductivity, which is explained on the basis of local annealing of defects, mainly vacancies, in the AZO layer. Finally, based on our experimental findings, we construct a parametric phase diagram to elucidate the transition from one to the other conduction mechanism. The present study will be useful to understand the effect of self-heating for AZO-based devices.
URI: http://ir.juit.ac.in:8080/jspui/jspui/handle/123456789/9112
Appears in Collections:Journal Articles



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