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Issue 9, 2016
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A facile chemical-mechanical polishing lift-off transfer process toward large scale Cu(In,Ga)Se2 thin-film solar cells on arbitrary substrates

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Abstract

The fabrication of Cu(In,Ga)Se2 (CIGS) solar cells on flexible substrates is a non-trivial task due to thermal and ion diffusion related issues. In order to circumvent these issues, we have developed a chemical-mechanical polishing lift-off (CMPL) transfer process, enabling the direct transfer of CIGS solar cells from conventional soda-lime glass (SLG) onto arbitrary flexible substrates up to 4 cm2 in size. The structural and compositional nature of the pre- and post-transferred films is examined using electron microscopy, X-ray diffraction analysis, Raman and photoluminescence spectroscopy. We demonstrate the fabrication of solar cells on a range of flexible substrates while being able to maintain 75% cell efficiency (η) when compared to pre-transferred solar cells. The results obtained in this work suggest that our transfer process offers a highly promising approach toward large scale fabrication of CIGS-based solar cells on a wide variety of flexible substrates, suitable for use in the large scale CIGS photovoltaic industry.

Graphical abstract: A facile chemical-mechanical polishing lift-off transfer process toward large scale Cu(In,Ga)Se2 thin-film solar cells on arbitrary substrates

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Publication details

The article was received on 10 Oct 2015, accepted on 30 Nov 2015 and first published on 30 Nov 2015


Article type: Paper
DOI: 10.1039/C5NR07008B
Nanoscale, 2016,8, 5181-5188

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    A facile chemical-mechanical polishing lift-off transfer process toward large scale Cu(In,Ga)Se2 thin-film solar cells on arbitrary substrates

    K. Tseng, Y. Yen, S. R. Thomas, H. Tsai, C. Hsu, W. Tsai, C. Shen, J. Shieh, Z. M. Wang and Y. Chueh, Nanoscale, 2016, 8, 5181
    DOI: 10.1039/C5NR07008B

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