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The Viability of Nanotechnology-based InGaN Solar Photovoltaic Devices for Sustainable Energy Generation

Published online by Cambridge University Press:  07 October 2013

Joshua M. Pearce
Affiliation:
Department of Materials Science & Engineering, Michigan Technological University, 1400 Townsend Dr., Houghton, MI, 49931-1295, U.S.A. Department of Electrical & Computer Engineering, Michigan Technological University, 1400 Townsend Dr., Houghton, MI, 49931-1295, U.S.A.
Chenlong Zhang
Affiliation:
Department of Materials Science & Engineering, Michigan Technological University, 1400 Townsend Dr., Houghton, MI, 49931-1295, U.S.A.
Joseph Rozario
Affiliation:
Department of Electrical & Computer Engineering, Michigan Technological University, 1400 Townsend Dr., Houghton, MI, 49931-1295, U.S.A.
Jephias Gwamuri
Affiliation:
Department of Materials Science & Engineering, Michigan Technological University, 1400 Townsend Dr., Houghton, MI, 49931-1295, U.S.A.
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Abstract

The unrestrained combustion of fossil fuels has resulted in vast pollution at the local scale throughout the world, while contributing to global warming at a rate that seriously threatens the stability of many of the world's ecosystems. Solar photovoltaic (PV) technology is a clean, sustainable and renewable energy conversion technology that can help meet the energy demands of the world’s growing population. Although PV technology is mature with commercial modules obtaining over 20% conversion efficiency there remains considerable opportunities to improve performance. The nearly global access to the solar resource coupled to nanotechnology innovation-driven decreases in the costs of PV, provides a path for a renewable energy source to significantly reduce the adverse anthropogenic impacts of energy use by replacing fossil fuels. This study explores several approaches to improving indium gallium nitride-based PV efficiency with nanotechnology: optical enhancement, microstructural optimization for electronic material quality and increasing the spectral response via bandgap engineering. The results showing multibandgap engineering with InGaN and impediments to widespread deployment and commercialization are discussed including technical viability, intellectual property laws and licensing, material resource scarcities, and economics. Future work is outlined and conclusions are drawn to overcome these limitations and improve PV device performance using methods that can scale to the necessary terawatt level.

Type
Articles
Copyright
Copyright © Materials Research Society 2013 

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