Title:
ADDITIONAL TEMPERATURE TREATMENT STEP FOR THIN-FILM SOLAR CELLS
Document Type and Number:
WIPO Patent Application WO/2015/165360
Kind Code:
A1
Abstract:
The present invention refers to a method for producing CdTe thin-film solar cells,respectively a semi-finished CdTe thin-film solar cell, where in an additional temperature step is carried out after applying the CdTe layer on to a substrate.In particular, the temperature step is performed after activating the CdTe layer using a suitable activation agent and removing the residual activation agent from the CdTe layer. The temperature treatment is performed under vacuum or in a heating chamber filled with either air or inert gas, during which treatment the substrate is exposed to a temperature between 180°C and 380°C for a time between 5 minutes and 60 minutes. Due to the inventive additional temperature step, the number and extension of crystal defects in the CdTe layer is reduced and the electric efficiency of the solar cell is further improved.
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Inventors:
SHOU PENG (CN)
BETTINA SPATH (DE)
MICHAEL HARR (DE)
SVEN FRAUENSTEIN (DE)
BETTINA SPATH (DE)
MICHAEL HARR (DE)
SVEN FRAUENSTEIN (DE)
Application Number:
PCT/CN2015/077347
Publication Date:
November 05, 2015
Filing Date:
April 24, 2015
Export Citation:
Assignee:
CHINA TRIUMPH INT ENG CO LTD (CN)
CTF SOLAR GMBH (DE)
CTF SOLAR GMBH (DE)
International Classes:
H01L31/18
Domestic Patent References:
| WO2014026099A1 | 2014-02-13 |
Foreign References:
| CN101640234A | 2010-02-03 | |||
| US20120042950A1 | 2012-02-23 | |||
| US7211462B2 | 2007-05-01 | |||
| EP2403016A1 | 2012-01-04 |
Other References:
BAMESH G. DHERE, 38TH PHOTOVOLTAIC SPECIALISTS CONFERENCE (PVSC), 2012, 38TH IEEE, 3 June 2012 (2012-06-03), pages 3208 - 3211
See also references of EP 3138133A4
See also references of EP 3138133A4
Attorney, Agent or Firm:
SHANGHAI GREATPOWER INTELLECTUAL PROPERTY LAW FIRM (CN)
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