Batteries: thermoelectric and photoelectric – Photoelectric – Cells
Patent
1998-12-22
2000-10-24
Chapman, Mark
Batteries: thermoelectric and photoelectric
Photoelectric
Cells
136265, 136256, 438487, H01L 3100
Patent
active
061370487
ABSTRACT:
A novel, simplified method for fabricating a thin-film semiconductor heterojunction photovoltaic device includes initial steps of depositing a layer of cadmium stannate and a layer of zinc stannate on a transparent substrate, both by radio frequency sputtering at ambient temperature, followed by the depositing of dissimilar layers of semiconductors such as cadmium sulfide and cadmium telluride, and heat treatment to convert the cadmium stannate to a substantially single-phase material of a spinel crystal structure. Preferably, the cadmium sulfide layer is also deposited by radio frequency sputtering at ambient temperature, and the cadmium telluride layer is deposited by close space sublimation at an elevated temperature effective to convert the amorphous cadmium stannate to the polycrystalline cadmium stannate with single-phase spinel structure.
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Wu X.; Sheldon, P.; Mahathongdy, Y.; Ribelin, R.; Mason, A.; Moutinho, H.R.; Coutts, T.J.; CdS/CdTe Thin-Film Solar Cell with a Zinc Stannate Buffer Layer, NREL, Department of Energy, Oct. 1998.
Wu, X.; Sheldon, P.; Coutts, T.J.; Rose D.H.; Moutinho, H.R.; Application of Cd2SnO4 Transparent Conducting Oxides in Cd2S/CdTe Thin-Film Devices, NREL, Department of Energy, 26th PVSD, pp. 347-350, Sep. 30-Oct. 3, 1997.
Wu, X.; Sheldon, P.; Coutts, T.J.; Rose, D.H.; Mulligan, W.P.; Moutinho, H.R.; CP394, NREL, Department of Energy, Photovoltaics Program Review, CdS/CdTe Thin-Film Devices Using a Cd2SnO4 Transparent Conducting Oxide, pp 693-702, AIP Press, 1997.
Sheldon Peter
Wu Xuanzhi
Chapman Mark
Midwest Research Institute
Richardson Ken
White Paul J.
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