Effective ink-jet printing of aqueous ink for Cu (In, Ga) Se2 thin film absorber for solar cell application

Yadav, Brijesh Singh and Dey, Suhash Ranjan and Dhage, Sanjay R (2019) Effective ink-jet printing of aqueous ink for Cu (In, Ga) Se2 thin film absorber for solar cell application. Solar Energy, 179. pp. 363-370. ISSN 0038-092X

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Chalcopyrite Cu (In, Ga) Se2 (CIGSe2) thin film solar cells have emerged as a popular absorber material among thin film technologies, leading with photoconversion efficiency more than 22% on lab scale already being reported. Solution processed absorber ink using non-vacuum route found to be cost effective and for scalable approach of CIGSe2 thin film solar cells. In this context, Inkjet printing emerges as a feasible technique for manufacturing CIGSe2 thin film solar cells. Here, inkjet printing of aqueous precursor ink to successfully make high-quality CIGSe2 absorber layer with controlled thickness and morphology is being presented. Precursor ink in aqueous medium and ink jetting parameters were optimized to obtain stable drop formation, essential for high-quality precursor film. The parameters that are found to strongly influence the formation of quality precursor CIG film were drop spacing and pretreatment temperature, discussed in detail. The effects of ink properties and printing parameters were investigated through rheological studies and optical microscopy; results suggested that uniform coverage of precursor CIG film can be achieved using a drop spacing of 175 µm and pretreatment temperature of 150 °C. A single phase highly crystalline chalcopyrite CIGSe2 thin film with dense morphology was obtained using atmospheric pressure selenization process. Semiconducting properties of film was studied by Mott-Schottky analysis. The photovoltaic performance of CIGSe2 film solar cell device fabricated using non-vacuum inkjet route demonstrated 4.0% photoconversion efficiency on active device area of 4 × 4 mm2.

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IITH Creators:
IITH CreatorsORCiD
Dey, Suhash Ranjanhttp://orcid.org/0000-0002-5148-9534
Item Type: Article
Uncontrolled Keywords: Inkjet printing, CIGSe2, Non-vacuum, Solar cell
Subjects: Materials Engineering > Materials engineering
Divisions: Department of Material Science Engineering
Depositing User: Team Library
Date Deposited: 06 Feb 2019 04:25
Last Modified: 06 Feb 2019 04:25
URI: http://raiith.iith.ac.in/id/eprint/4794
Publisher URL: http://doi.org/10.1016/j.solener.2019.01.003
OA policy: http://www.sherpa.ac.uk/romeo/issn/0038-092X/
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