Advanced photovoltaic concentrator cells. Quarterly technical progress report No. 1, August 28, 1979-November 30, 1979

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First quarter activities for a project aimed at demonstrating the technical feasibility of advanced high efficiency concentrator solar converters are described. The goal of the program is to achieve 30% conversion efficiency with a converter operating at 30/sup 0/C under 500 to 1000 SUN AM2 illumination and 25% conversion efficiency with a converter operating at 150/sup 0/C under 500 to 1000 SUN AM2 illumination. The approach is to fabricate two cell, non-lattice matched, monolithic stacked converters using optimum pairs of cells having bandgaps in the range of 1.6 to 1.7 eV and 0.95 to 1.1 eV. The high bandgap cells ... continued below

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Pages: 42

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Zehr, S.W.; Yang, H.T. & Harris, J.S. Jr. December 1, 1979.

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Description

First quarter activities for a project aimed at demonstrating the technical feasibility of advanced high efficiency concentrator solar converters are described. The goal of the program is to achieve 30% conversion efficiency with a converter operating at 30/sup 0/C under 500 to 1000 SUN AM2 illumination and 25% conversion efficiency with a converter operating at 150/sup 0/C under 500 to 1000 SUN AM2 illumination. The approach is to fabricate two cell, non-lattice matched, monolithic stacked converters using optimum pairs of cells having bandgaps in the range of 1.6 to 1.7 eV and 0.95 to 1.1 eV. The high bandgap cells are to be fabricated using MOCVD or LPE to produce the needed AlGaAs layers of optimized composition, thickness and doping to produce high performance, heteroface homojunction devices, The low bandgap cells are to be similarly fabricated from AlGaSb(As) compositions by LPE. These subcells are then to be joined into a monolithic structure by an appropriate thermal bonding technique which will also form the needed transparent intercell ohmic contact (IOC) between the two subcells. The activities this quarter have been largely focused on the development and study of low bandgap cell structures and attempts to develop suitable techniques for the thermal bonding operation.

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Pages: 42

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NTIS, PC A03/MF A01.

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  • Report No.: DSE-4042-T30
  • Grant Number: EG-77-01-4042
  • DOI: 10.2172/5381019 | External Link
  • Office of Scientific & Technical Information Report Number: 5381019
  • Archival Resource Key: ark:/67531/metadc1069365

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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.

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  • December 1, 1979

Added to The UNT Digital Library

  • Feb. 4, 2018, 10:51 a.m.

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  • June 8, 2018, 8:34 p.m.

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Zehr, S.W.; Yang, H.T. & Harris, J.S. Jr. Advanced photovoltaic concentrator cells. Quarterly technical progress report No. 1, August 28, 1979-November 30, 1979, report, December 1, 1979; Golden, Colorado. (digital.library.unt.edu/ark:/67531/metadc1069365/: accessed July 19, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.