Title: Investigating PMMA as a potential insulator material for metal-insulator-metal diode

Authors: Shilpi Shriwastava; Kapil Bhatt; Sandeep Sharma; Sandeep Kumar; C.C. Tripathi

Addresses: Department of Electronics and Communication Engineering, University Institute of Engineering and Technology, Kurukshetra University, Kurukshetra, India ' Department of Electronics and Communication Engineering, University Institute of Engineering and Technology, Kurukshetra University, Kurukshetra, India ' Department of Electronics and Communication Engineering, University Institute of Engineering and Technology, Kurukshetra University, Kurukshetra, India ' Department of Electronics and Communication Engineering, University Institute of Engineering and Technology, Kurukshetra University, Kurukshetra, India ' Department of Electronics and Communication Engineering, University Institute of Engineering and Technology, Kurukshetra University, Kurukshetra, India

Abstract: The metal-insulator-metal (MIM) diodes are considered very promising for high frequency applications because of its tunnelling-based ultrafast charge transport mechanism. A wide variety of materials are being explored in quest of developing these thin film devices. Recently, organic insulator-based MIM diodes have attracted significant attention to the researchers due to its several advantages and have become a promising alternative of conventional inorganic insulators. In the present work the feasibility of an organic polymer polymethyl methacrylate (PMMA) is investigated for insulating material of MIM junction. It is a transparent resin which is able to produce uniform and thin insulating layer with low defect density. In this work, an Al/PMMA/Cr structure is fabricated by optimising different process parameters in order to develop high performance, reproducible organic MIM diodes. The as fabricated device exhibited fairly asymmetric and nonlinear current-voltage characteristics, which reveals the viability of PMMA as candidate material for insulator layer in MIM diodes.

Keywords: metal-insulator-metal; MIM diode; polymethyl methacrylate; PMMA; organic insulator; asymmetry; nonlinearity.

DOI: 10.1504/IJNP.2018.094046

International Journal of Nanoparticles, 2018 Vol.10 No.3, pp.207 - 216

Received: 31 Dec 2017
Accepted: 17 Apr 2018
Published online: 13 Aug 2018 *

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