Preparation of copper-indium-gallium-diselenide precursor films by electrodeposition for fabricating high efficiency solar cells

Bhattacharya, Raghu N; Hasoon, Falah S; Wiesner, Holm; Keane, James; Noufi, Rommel; Ramanathan, Kannan

Title: Preparation of copper-indium-gallium-diselenide precursor films by electrodeposition for fabricating high efficiency solar cells

Patent · Tue Feb 16 00:00:00 EST 1999

OSTI ID:872149

Bhattacharya, Raghu N ^[1]; Hasoon, Falah S ^[2]; Wiesner, Holm ^[3]; Keane, James ^[4]; Noufi, Rommel ^[3]; Ramanathan, Kannan ^[3]

Littleton, CO
Arvada, CO
Golden, CO
Lakewood, CO

A photovoltaic cell exhibiting an overall conversion efficiency of 13.6% is prepared from a copper-indium-gallium-diselenide precursor thin film. The film is fabricated by first simultaneously electrodepositing copper, indium, gallium, and selenium onto a glass/molybdenum substrate (12/14). The electrodeposition voltage is a high frequency AC voltage superimposed upon a DC voltage to improve the morphology and growth rate of the film. The electrodeposition is followed by physical vapor deposition to adjust the final stoichiometry of the thin film to approximately Cu(In.sub.1-n Ga.sub.x)Se.sub.2, with the ratio of Ga/(In+Ga) being approximately 0.39.

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Research Organization:: National Renewable Energy Laboratory (NREL), Golden, CO (United States)

DOE Contract Number:: 1326

Assignee:: Davis, Joseph & Negley (Austin, TX)

Patent Number(s):: US 5871630

Application Number:: 08/870,081

OSTI ID:: 872149

Country of Publication:: United States

Language:: English

References (11)

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Recrystallization of electrodeposited copper indium diselenide thin films in an atmosphere of elemental selenium Guillemoles, Jean Fran�ois; Lusson, Alain; Cowache, Pierre Advanced Materials, Vol. 6, Issue 5 https://doi.org/10.1002/adma.19940060507	journal	May 1994
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Pulse Plated Electrodeposition of CuInSe2 Films Lokhande, C. D. Journal of The Electrochemical Society, Vol. 134, Issue 7 https://doi.org/10.1149/1.2100745	journal	July 1987
Electrochemical synthesis of photoactive In2Se3 thin films Herrero, J.; Ortega, J. Solar Energy Materials, Vol. 16, Issue 6 https://doi.org/10.1016/0165-1633(87)90049-9	journal	December 1987
Low cost methods for the production of semiconductor films for CuInSe₂/CdS solar cells Kapur, Vijay K.; Basol, Bulent M.; Tseng, Eric S. Solar Cells, Vol. 21, Issue 1-4, p. 65-72 https://doi.org/10.1016/0379-6787(87)90105-0	journal	June 1987
Accelerated publication 17.1% efficient Cu(In,Ga)Se ₂ -based thin-film solar cell Tuttle, J. R.; Contreras, M. A.; Gillespie, T. J. Progress in Photovoltaics: Research and Applications, Vol. 3, Issue 4 https://doi.org/10.1002/pip.4670030404	journal	January 1995
Device quality thin films of CuInSe2 by a one-step electrodeposition process Pern, F. J.; Goral, J.; Matson, R. J. Solar Cells, Vol. 24, Issue 1-2 https://doi.org/10.1016/0379-6787(88)90038-5	journal	May 1988
Preparation and Characterization of Electrodeposited CuInSe ₂ Thin Films Sudo, Yoshihiro; Endo, Saburo; Irie, Taizo Japanese Journal of Applied Physics, Vol. 32, Issue Part 1, No. 4 https://doi.org/10.1143/JJAP.32.1562	journal	April 1993
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Title: Preparation of copper-indium-gallium-diselenide precursor films by electrodeposition for fabricating high efficiency solar cells

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