Title:
LAYER SYSTEM FOR SOLAR CELLS
Document Type and Number:
WIPO Patent Application WO/2009/141132
Kind Code:
A3
Abstract:
The invention relates to a layer system (1) for thin film solar cells and CIS absorber (4) based solar modules. The layer system (1) according to the invention comprises an In2(S1-x,Sex)3+δ buffer layer (5), wherein 0 ≤ x ≤ 1 and -1 ≤ δ ≤ 1. The buffer layer (5) is amorphous. The disadvantages, namely toxicity and poor process integration, of CdS buffers, which have so far been frequently used, are overcome by the buffer layer (5) according to the invention, a high efficiency and at the same time excellent long term stability being achieved and the disadvantages of conventional buffer layers other than CdS being also overcome.
Inventors:
PALM JOERG (DE)
Application Number:
PCT/EP2009/003587
Publication Date:
August 19, 2010
Filing Date:
May 19, 2009
Export Citation:
Assignee:
SAINT GOBAIN (FR)
PALM JOERG (DE)
PALM JOERG (DE)
International Classes:
H01L31/0336; H01L31/032; H01L31/0749
Foreign References:
| JPH1126790A | 1999-01-29 | |||
| DE102006039331A1 | 2008-02-28 |
Other References:
LOKHANDE C D ET AL: "Chemical bath deposition of indium sulphide thin films: preparation and characterization", THIN SOLID FILMS, ELSEVIER-SEQUOIA S.A. LAUSANNE, CH LNKD- DOI:10.1016/S0040-6090(98)00980-8, vol. 340, no. 1-2, 26 February 1999 (1999-02-26), pages 18 - 23, XP004164221, ISSN: 0040-6090
QASRAWI ET AL: "Temperature dependence of the band gap, refractive index and single-oscillator parameters of amorphous indium selenide thin films", OPTICAL MATERIALS, ELSEVIER SCIENCE PUBLISHERS B.V. AMSTERDAM, NL, vol. 29, no. 12, 23 June 2007 (2007-06-23), pages 1751 - 1755, XP022126850, ISSN: 0925-3467
E. RUDIGIER, J. PALM, R. SCHEER: "Towards a fast process control for Cu(In,Ga)(Se,S)2 absorbers. The surface chalcogen ratio assesed by Raman spectroscopy", PROCEEDINGS OF THE 19TH EUROPEAN PHOTOVOLTAIC SOLAR ENERGY CONFERENCE, 7 June 2004 (2004-06-07) - 11 June 2004 (2004-06-11), pages 1913 - 1916, XP002585523
QASRAWI ET AL: "Temperature dependence of the band gap, refractive index and single-oscillator parameters of amorphous indium selenide thin films", OPTICAL MATERIALS, ELSEVIER SCIENCE PUBLISHERS B.V. AMSTERDAM, NL, vol. 29, no. 12, 23 June 2007 (2007-06-23), pages 1751 - 1755, XP022126850, ISSN: 0925-3467
E. RUDIGIER, J. PALM, R. SCHEER: "Towards a fast process control for Cu(In,Ga)(Se,S)2 absorbers. The surface chalcogen ratio assesed by Raman spectroscopy", PROCEEDINGS OF THE 19TH EUROPEAN PHOTOVOLTAIC SOLAR ENERGY CONFERENCE, 7 June 2004 (2004-06-07) - 11 June 2004 (2004-06-11), pages 1913 - 1916, XP002585523
Attorney, Agent or Firm:
LENDVAI, Tomas (Glasstrasse 1, Herzogenrath, DE)
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