Title:
基板上に形成された黄銅鉱の吸収層上に硫化亜鉛バッファ層を化学浴析出により施与する黄銅鉱薄膜太陽電池の製造方法
Document Type and Number:
Japanese Patent JP5038894
Kind Code:
B2
Abstract:
Chemical bath deposition (CBD) has proved top be the most favorable method for application of a buffer layer to semiconductor substrates, for example, chalcopyrite thin-film solar cells, whereby previously cadmium sulphide (CdS) was deposited and as cadmium is a highly toxic heavy metal, alternatives have been required. According to the invention, the semiconductor substrate is dipped in a solution for approximately 10 minutes, produced by the dissolution of zinc sulphate (0.05-0.5 mol/l) and thiourea (0.2 to 1.5 mol/l) in distilled water at a temperature being held essentially constant throughout said period. For the first time, the ZnS layer permits comparable or higher efficiencies than conventionally only achieved with toxic cadmium compounds. The method is hence much more environmentally-friendly with the same result.
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Inventors:
Ahmed Anawi
Timo crop
Marta Christina Lux-Steiner
Timo crop
Marta Christina Lux-Steiner
Application Number:
JP2007526199A
Publication Date:
October 03, 2012
Filing Date:
August 11, 2005
Export Citation:
Assignee:
Helmholtz-Zentrum Berlin fuer Materialien und Energie GmbH
International Classes:
H01L31/04; H01L31/0749
Domestic Patent References:
| JP3249342B2 | ||||
| JP200447916A | ||||
| JP2002141297A | ||||
| JP2005228975A |
Other References:
K.Kushiya et al.,"Application of Zn-Compound Buffer Layer for Polycrystalline CuInSe2-Based Thin-Film Solar Cells",Japanese Journal of Applied Physics,Vol.35, Part 1, No.8, 15 August 1996,pp.4383-4388
M.A.Contreras et al.,"ZnO/ZnS(O,OH)/Cu(In,Ga)Se2/Mo solar cell with 18.6% efficiency",Proceedings of 3rd World Conference on Photovoltaic Energy Conversion, 2003,11-18 May 2003,Vol.1, pp.570-573
I.Lauermann,"In situ analysis of the Zn(S,O) buffer layer preparation for chalcopyrite solar cells by Zn L-edge X-ray absorption spectroscopy",Chemphyschem,2009 Feb 23, Vol.10,p.532-535
M.A.Contreras et al.,"ZnO/ZnS(O,OH)/Cu(In,Ga)Se2/Mo solar cell with 18.6% efficiency",Proceedings of 3rd World Conference on Photovoltaic Energy Conversion, 2003,11-18 May 2003,Vol.1, pp.570-573
I.Lauermann,"In situ analysis of the Zn(S,O) buffer layer preparation for chalcopyrite solar cells by Zn L-edge X-ray absorption spectroscopy",Chemphyschem,2009 Feb 23, Vol.10,p.532-535
Attorney, Agent or Firm:
Ryoichi Shino
Shuichi Sumiyoshi
Kawabe Sachiyo
Yasushi Miyagi
Kiyoshi Kuruma
Toshio Yano
Toshiomi Yamazaki
Takuya Kuno
Hiroshi Sugimoto
Einzel Felix-Reinhard
Shuichi Sumiyoshi
Kawabe Sachiyo
Yasushi Miyagi
Kiyoshi Kuruma
Toshio Yano
Toshiomi Yamazaki
Takuya Kuno
Hiroshi Sugimoto
Einzel Felix-Reinhard