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Field Dependent Electrical Conduction in Metal-Insulator-Metal Devices using Alumina-Silicone Nanolaminate Dielectrics

Published online by Cambridge University Press:  18 June 2013

Santosh K. Sahoo ,
Rakhi P. Patel  and
Colin A. Wolden
Santosh K. Sahoo
Affiliation:
National Renewable Energy Laboratory, 1617 Cole Blvd., Golden, Colorado 80401, USA New Jersey Institute of Technology, Newark, New Jersey 07102, USA
Rakhi P. Patel
Affiliation:
Department of Chemical and Biological Engineering, Colorado School of Mines, Golden, Colorado 80401, USA
Colin A. Wolden
Affiliation:
Department of Chemical and Biological Engineering, Colorado School of Mines, Golden, Colorado 80401, USA
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Abstract

Hybrid alumina-silicone nanolaminate films were synthesized by plasma enhanced chemical vapor deposition (PECVD) process. PECVD allows digital control over nanolaminate construction, and may be performed at low temperature for compatibility with flexible substrates. These materials are being considered as dielectrics for application such as capacitors in thin film transistors and memory devices. In this work, we present the temperature dependent current versus voltage (I-V) measurements of the nanolaminate dielectrics in the range of 200- 310 K to better asses their potential in these applications. Various models are used to know the different conduction mechanisms contributing to the leakage current in these nanolaminate films. It is observed that space charge limited current (SCLC) mechanism is the dominant conduction process in the high field region whereas Ohmic conduction process is contributing to the leakage current in the low field region. The shallow electron trap level energy (Et) of 0.16 eV is responsible for SCLC mechanism whereas for Ohmic conduction process the activation energy (Ea) for electrons is about 0.22 eV. An energy band diagram is given to explain the dominance of various conduction mechanisms in different field regions in these nanolaminate films.

Keywords

chemical vapor deposition (CVD) (chemical reaction)electrical propertiespolymer
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1547: Symposium M – Solution Synthesis of Inorganic Functional Materials—Films, Nanoparticles and Nanocomposites , 2013 , pp. 95 - 102
Copyright
Copyright © Materials Research Society 2013 

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References

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