R and D challenges and opportunities in Si photovoltaics

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The PV industry has already begun to address the use of thinner Si wafers, dropping from 400 mm toward 200 mm. Such a reduction in the wafer thickness is expected to conserve Si usage with an added advantage of higher cell efficiencies. The test production lots, fabricated with thin wafers, have verified such improvements in the device performance with a reduction in wafer thickness. However, the yield of thin cells is far lower than that of its thicker counterparts. It is expected that automation can mitigate part of this problem. However, it is necessary to investigate the basic mechanisms of ... continued below

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Sopori, B. October 26, 1999.

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The PV industry has already begun to address the use of thinner Si wafers, dropping from 400 mm toward 200 mm. Such a reduction in the wafer thickness is expected to conserve Si usage with an added advantage of higher cell efficiencies. The test production lots, fabricated with thin wafers, have verified such improvements in the device performance with a reduction in wafer thickness. However, the yield of thin cells is far lower than that of its thicker counterparts. It is expected that automation can mitigate part of this problem. However, it is necessary to investigate the basic mechanisms of wafer breakage. In particular, factors such as sawing, texturing, and warpage by the asymmetric metal patterns, which cause a propensity to breakage, need to be well understood. The final frontier of the thinner cells, the thin-film Si solar cell, is already above the horizon. The transition of this laboratory device into pilot line and then to production, is a strong challenge.

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  • 9th Workshop on Crystalline Silicon Solar Cell Materials and Processes, Breckenridge, CO (US), 08/09/1999--08/11/1999

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  • Report No.: NREL/CP--520-26886
  • Grant Number: AC36-99GO10337
  • Office of Scientific & Technical Information Report Number: 752409
  • Archival Resource Key: ark:/67531/metadc706599

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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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  • October 26, 1999

Added to The UNT Digital Library

  • Sept. 12, 2015, 6:31 a.m.

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  • March 31, 2016, 4:05 p.m.

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Sopori, B. R and D challenges and opportunities in Si photovoltaics, article, October 26, 1999; Golden, Colorado. (digital.library.unt.edu/ark:/67531/metadc706599/: accessed July 16, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.