Thin, free-standing Cu_2O substrates via thermal oxidation for photovoltaic devices
Abstract
Cu_2O is a promising, earth-abundant alternative to traditional photovoltaic materials (CIGS, CdTe, etc.) because of its low cost, high availability, and straightforward processing. We report a method to fabricate Cu_2O substrates with thicknesses of less than 20 microns which may be handled and processed into devices. Development of thinner Cu_2O substrates is essential as extrinsic doping has been impossible thus far, and intrinsic Cu_2O is highly resistive. Hall measurements indicate that the substrates had Hall mobilities of 10–20 cm^2V^(−1)s^(−1) and carrier concentrations on the order of 10^(14) cm^(−3). Current-voltage characteristics of these Cu_2O substrates were derived from liquid junction Schottky barrier device measurements which indicate open circuit voltages of Voc ∼ 600 mV.
Additional Information
© 2011 IEEE. Date of Current Version: 04 October 2012. The authors acknowledge The Dow Chemical Company for funding and collaborating in this work.Additional details
- Eprint ID
- 34812
- DOI
- 10.1109/PVSC.2012.6318256
- Resolver ID
- CaltechAUTHORS:20121010-091657887
- Dow Chemical Company
- Created
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2012-10-10Created from EPrint's datestamp field
- Updated
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2021-11-09Created from EPrint's last_modified field