Cadmium sulfide/copper selenide cell research. Copper selenide-based thin film solar cells. First quarterly technical progress report, June 1-September 1, 1980

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The objective of this program is to investigate the use of Cu/sub 2-x/Se to produce low cost, high efficiency photovoltaic solar cells. The goal is to: (1) develop a polycrystalline thin film photovoltaic device capable of 10% conversion efficiency, and (2) demonstrate feasibility of large scale production at a cost of approximately $0.30/watt. The Cu/sub 2-x/Se films are produced by coevaporation of Cu and Se from separate, individually controlled vapor sources onto heated glass substrates. This method gives greater composition controllability and is readily adaptable to large scale production efforts. Two quartz crystal microbalances are used to separately monitor the … continued below

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20 pages

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Mickelsen, R. A.; Stewart, J. M. & Chen, W. S. January 1, 1980.

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The objective of this program is to investigate the use of Cu/sub 2-x/Se to produce low cost, high efficiency photovoltaic solar cells. The goal is to: (1) develop a polycrystalline thin film photovoltaic device capable of 10% conversion efficiency, and (2) demonstrate feasibility of large scale production at a cost of approximately $0.30/watt. The Cu/sub 2-x/Se films are produced by coevaporation of Cu and Se from separate, individually controlled vapor sources onto heated glass substrates. This method gives greater composition controllability and is readily adaptable to large scale production efforts. Two quartz crystal microbalances are used to separately monitor the Cu and Se deposition rates. The structural, electrical, and optical properties of the Cu/sub 2-x/Se films have been measured for deposits made on 250/sup 0/C substrates. The optical absorption measurements shows the material having an indirect band gap of 1.4 ev and a direct gap of 2.2 ev. These values are for stoichiometric indices in the range of 0.17 less than or equal to x less than or equal to 0.26. Hall and conductivity measurements give hole mobilities in the range of 3-7 cm/sup 2//Vsec and hole densities of the order of 4 x 10/sup 22/ cm/sup -3/. For deposits made on substrate at 160/sup 0/C, the mobility is in the range of 3 to 10 cm/sup 2//Vsec and hole densities on the order of 10/sup 19/ to 10/sup 21/ cm/sup -3/ for 0.1 less than or equal to x less than or equal to 0.3. To date, the best cell has photovoltaic characteristics of J/sub sc/ = 11.6 mA/cm/sup 2/, V/sub oc/ = 460 mV, F.F. = 0.62 and eta = 3.3% as tested under simulated AM1 illumination.

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20 pages

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NTIS, PC A02/MF A01.

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  • January 1, 1980

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  • Feb. 10, 2019, 8:45 p.m.

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  • Aug. 6, 2019, 12:28 p.m.

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Thumbnail image of item number 1 in: 'Cadmium sulfide/copper selenide cell research. Copper selenide-based thin film solar cells. First quarterly technical progress report, June 1-September 1, 1980'.
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Mickelsen, R. A.; Stewart, J. M. & Chen, W. S. Cadmium sulfide/copper selenide cell research. Copper selenide-based thin film solar cells. First quarterly technical progress report, June 1-September 1, 1980, report, January 1, 1980; United States. (https://digital.library.unt.edu/ark:/67531/metadc1449091/: accessed July 18, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

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