Kimball, Gregory M. and Lewis, Nathan S. and Atwater, Harry A. (2008) Synthesis and surface chemistry of Zn_3P_2. In: 33rd IEEE Photovolatic Specialists Conference. IEEE , Piscataway, NJ. ISBN 978-1-4244-1640-0. https://resolver.caltech.edu/CaltechAUTHORS:20170405-165832245
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Abstract
Zinc phosphide (Zn_3P_2) is a promising alternative to traditional materials (e.g. CIGS, CdTe, a-Si) for thin film photovoltaics. Open circuit voltage in Zn_3P_2 cells has been limited by Fermi-level pinning due to surfaces states and heterojunction interdiffusion, motivating the need to prepare interfaces that are electrically passive and chemically inert. We investigated the surface chemistry of Zn_3P_2 via etching with bromine in methanol and passivation with ammonium sulfide in t-butanol. The treatment decreases surface oxidation as determined by x-ray photoelectron spectroscopy and provides a stable, low-defect interface as monitored by steady-state photoluminescence. Magnesium Schottky diodes fabricated with sulfur-passivated interfaces show evidence of enhanced barrier heights in comparison to control devices.
| Item Type: | Book Section | |||||||||
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| Additional Information: | © 2008 IEEE. This work was supported by the Office of Energy Efficiency and Renewable Energy, US Department of Energy under grant DE-FG36-08G018006. One of us (GMK) acknowledges support under an NDSEG graduate fellowship. We also acknowledge use of facilities supported by the Center for Science and Engineering of Materials, an NSF MRSEC. | |||||||||
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| DOI: | 10.1109/PVSC.2008.4922747 | |||||||||
| Record Number: | CaltechAUTHORS:20170405-165832245 | |||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20170405-165832245 | |||||||||
| Official Citation: | G. M. Kimball, N. S. Lewis and H. A. Atwater, "Synthesis and surface chemistry of Zn3P2," 2008 33rd IEEE Photovoltaic Specialists Conference, San Diego, CA, USA, 2008, pp. 1-6. doi: 10.1109/PVSC.2008.4922747 | |||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | |||||||||
| ID Code: | 75760 | |||||||||
| Collection: | CaltechAUTHORS | |||||||||
| Deposited By: | INVALID USER | |||||||||
| Deposited On: | 06 Apr 2017 16:27 | |||||||||
| Last Modified: | 15 Nov 2021 16:36 |
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