Cadmium sulfide-copper sulfide heterojunction cell research. Final report, September 1, 1978-August 31, 1979

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Research on the planar CdS/Cu/sub 2/S cell to increase the short circuit currents to the levels achieved with the 9.15% textured cell is given. It was established early in the contract that light trapping is essential for high currents and a front surface texturing process has been developed to achieve this. As a result, short circuit currents have been raised to over 21.0 mA/cm/sup 2/. The highest efficiency achieved with the planar junction cell during the contract was 7.81%. Cells heat treated to their highest short circuit currents have shown fill factors below the design requirement of about 74% thus ... continued below

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Pages: 127

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Creator: Unknown. December 1, 1979.

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Description

Research on the planar CdS/Cu/sub 2/S cell to increase the short circuit currents to the levels achieved with the 9.15% textured cell is given. It was established early in the contract that light trapping is essential for high currents and a front surface texturing process has been developed to achieve this. As a result, short circuit currents have been raised to over 21.0 mA/cm/sup 2/. The highest efficiency achieved with the planar junction cell during the contract was 7.81%. Cells heat treated to their highest short circuit currents have shown fill factors below the design requirement of about 74% thus putting a limit on achievable efficiency. Progress has been made on improving the performance of the (CdZn)S/Cu/sub 2/S again with the major emphasis being on improved short circuit currents. Modifying the CdZn/S deposition procedure has resulted in considerably improved short circuit currents to over 21 mA/Cm/sup 2/, and a cell efficiency of 8.19% has been recorded. Fundamental studies have focused on the influence of substrate composition and heat treatment on junction field and collection efficiency. Quantitative analysis has been carried out of the optimal material parameters required to maximize energy converson efficiency. It has been shown a relatively narrow range of properties in the CdS and Cu/sub 2/S is necessary to achieve the highest efficiencies. The encapsulation task has focused on trial depositions of glass applied by electron beam evaporation.

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Pages: 127

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NTIS, PC A07/MF A01.

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  • Report No.: SERI/TR-8063-1-T2
  • Grant Number: AC02-77CH00178
  • DOI: 10.2172/6428456 | External Link
  • Office of Scientific & Technical Information Report Number: 6428456
  • Archival Resource Key: ark:/67531/metadc1203141

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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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  • December 1, 1979

Added to The UNT Digital Library

  • July 5, 2018, 11:11 p.m.

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  • Sept. 4, 2018, 2:59 p.m.

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Cadmium sulfide-copper sulfide heterojunction cell research. Final report, September 1, 1978-August 31, 1979, report, December 1, 1979; United States. (digital.library.unt.edu/ark:/67531/metadc1203141/: accessed January 18, 2019), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.