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A Phase Diagram of Low Temperature Epitaxial Silicon Grown by Hot-wire Chemical Vapor Deposition for Photovoltaic Devices

Richardson, Christine Esber and Kayes, Brendan M. and Dicken, Matthew J. and Atwater, Harry A. (2005) A Phase Diagram of Low Temperature Epitaxial Silicon Grown by Hot-wire Chemical Vapor Deposition for Photovoltaic Devices. In: 2005 Amorphous and Nanocrystalline Silicon Science and Technology. Materials Research Society Symposium Proceedings. No.862. Materials Research Society , Warrendale, PA, pp. 171-175. ISBN 1-55899-815-2 http://resolver.caltech.edu/CaltechAUTHORS:20110826-080854161

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Abstract

We have investigated the low-temperature epitaxial growth of thin silicon films by hot-wire chemical vapor deposition (HWCVD). Using reflection high energy electron diffraction (RHEED) and transmission electron microscopy (TEM), we have found conditions for epitaxial growth at low temperatures achieving twinned epitaxial growth up to 6.8 µm on Si(100) substrates at a substrate temperature of 230°C. This opens the possibility of growing high quality films on low cost substrates. The H_2:SiH_4 dilution ratio was set to 50:1 for all growths. Consistent with previous results, the epitaxial thickness is found to decrease with an increase in the substrate temperature.


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http://scholar.googleusercontent.com/scholar?q=cache:CqhlroH2PNsJ:scholar.google.com/+A+phase+diagram+of+low+temperature+epitaxial+silicon+grown+by+hot-wire+chemical+vapor+deposition+for+photovoltaic+devices&hl=en&as_sdt=0,5OtherUNSPECIFIED
Additional Information:© 2005 Materials Research Society. The authors would like to thank BP Solar for their support on this project and CER would like to thank Corning for their NPSC Fellowship support. Thanks also to Bob Reedy at the National Renewable Energy Lab for his SIMS expertise which helped us to identify and resolve our contamination issues.
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Record Number:CaltechAUTHORS:20110826-080854161
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20110826-080854161
Official Citation:A Phase Diagram of Low Temperature Epitaxial Silicon Grown by Hot-wire Chemical Vapor Deposition for Photovoltaic Devices Christine Esber Richardson, Brendan M. Kayes, Matthew J. Dicken, and Harry A. Atwater
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:25111
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:26 Aug 2011 15:36
Last Modified:26 Aug 2011 15:36

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