PVMaT Improvements in the BP Solarex Photovoltaic Module Manufacturing Technology: Annual Report, May 5, 1999 - June 15, 2000

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This is the annual report for a 3-year PV program to continue to advance BP Solarex photovoltaic manufacturing technologies to design and implement a process that produces polycrystalline silicon PV modules that can be sold profitably for $2.00 per peak watt or less, and which increases the production capacity of the Frederick plant to at least 25 megawatts per year. The accomplishments discussed in this report include: (1) developed processes to produce high-purity SiF4 gas from a number of available commercial sources; (2) designed and implemented a new control system for casting; (3) verified relationship between higher minority-carrier lifetime in ... continued below

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Wohlgemuth, J. & Shea, S. (BP Solarex) March 12, 2001.

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Description

This is the annual report for a 3-year PV program to continue to advance BP Solarex photovoltaic manufacturing technologies to design and implement a process that produces polycrystalline silicon PV modules that can be sold profitably for $2.00 per peak watt or less, and which increases the production capacity of the Frederick plant to at least 25 megawatts per year. The accomplishments discussed in this report include: (1) developed processes to produce high-purity SiF4 gas from a number of available commercial sources; (2) designed and implemented a new control system for casting; (3) verified relationship between higher minority-carrier lifetime in cast Si and cell efficiency; tracking material quality by measuring minority-carrier lifetime for each production casting; (4) reduced the wire-saw pitch to 450 microns with no loss in downstream yield; (5) demonstrated 8% improvement in average cell power on pre-production trial lots using PECVD silicon nitride; (6) developed a new EVA formation and demonstrated a 6-minute process to achieve adequate cure of PV modules in standard lamination equipment; (7) designed, purchased, and installed a new automated assembly line for large-area modules; and (8) implemented a factory-wide data collection and tracking system; production volumes and performance parameters are now monitored in real time through the local area network.

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  • Other Information: PBD: 12 Mar 2001

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  • Report No.: NREL/SR-520-29459
  • Grant Number: AC36-99GO10337
  • DOI: 10.2172/776939 | External Link
  • Office of Scientific & Technical Information Report Number: 776939
  • Archival Resource Key: ark:/67531/metadc721161

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • March 12, 2001

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  • Sept. 29, 2015, 5:31 a.m.

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  • March 31, 2016, 4:05 p.m.

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Wohlgemuth, J. & Shea, S. (BP Solarex). PVMaT Improvements in the BP Solarex Photovoltaic Module Manufacturing Technology: Annual Report, May 5, 1999 - June 15, 2000, report, March 12, 2001; Golden, Colorado. (digital.library.unt.edu/ark:/67531/metadc721161/: accessed April 27, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.