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Modeling, synthesis, and characterization of thin film copper oxide for solar cells

Darvish, Davis S. and Atwater, Harry A. (2009) Modeling, synthesis, and characterization of thin film copper oxide for solar cells. In: 34th IEEE Photovoltaic Specialists Conference. IEEE , New York, pp. 1228-1232. ISBN 978-1-4244-2949-3.

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The modeling, growth, and characterization of Copper Oxide thin films for solar cell applications are reported. Cu_2O has several attractive properties which include its direct band gap (Eg=2.17 eV) for use in photoelectrolysis of water and use in tandem multi-junction cells. Detailed balance calculations predict efficiencies on the order of 20% while Cu_2O cells have yet to even pass 2% efficiency. The device physics model reveals that defects, particularly at the heterojunction interface, are the main reason for lowered efficiencies. Epitaxial Cu_2O (100) thin films on MgO are fabricated using RF Oxygen plasma MBE. The films are quite smooth and showed mobilites in the range of 10-100 cm^2/V*sec and carrier concentrations in the range of 10^(14)-10^(17). Finally, the epitaxial growth of Cu_2O on a MgO template is demonstrated.

Item Type:Book Section
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URLURL TypeDescription DOIArticle
Atwater, Harry A.0000-0001-9435-0201
Additional Information:© 2009 IEEE. We acknowledge financial support from U.S. Department of Energy under grant DE-FG36-08G018006, and the Caltech Center for Sustainable Energy Research. We thank Dr. Matthew Dicken, Greg Kimball, and Carrie Hofmann for engaging discussions and assistance.
Funding AgencyGrant Number
Department of Energy (DOE)DE-FG36-08G018006
Caltech Center for Sustainable Energy ResearchUNSPECIFIED
Record Number:CaltechAUTHORS:20100816-105436956
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:19438
Deposited By: Tony Diaz
Deposited On:16 Aug 2010 18:11
Last Modified:08 Nov 2021 23:52

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