Spin-coated kesterite CZTS thin films for photovoltaic applications
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Date
2015-09
Journal Title
Journal ISSN
Volume Title
Publisher
Springer
Abstract
Copper zinc tin-sulfide (CZTS) films have been widely studied over recent years due to the inherent advantages of low cost, high absorption coefficient (≥ 104 cm−1), suitable band gap (∼1.5 eV) and nontoxicity. In this work, spin coating was used to obtain CZTS films of various compositions and degrees of crystallization on glass substrates, which were then annealed at 500 °C in a N2 atmosphere by using a rapid thermal processing (RTP) furnace in order to optimize their structure. Non-stoichiometric precursors and low spinning speeds resulted in a lower sheet resistance, which is considered to be a result of lower degree of crystallization. Furthermore, the non-stoichiometric films had a high optical band gap (> 1.66 eV) whereas the band gap of the stoichiometric films (1.4 to 1.6 eV) was close to the optimal value (1.5 eV) for solar-cell applications.
Description
To access full text please visit the following link http://link.springer.com/article/10.3938%2Fjkps.67.1078
Keywords
Copper zinc tin-sulfide (CZTS), Thin film, Photovoltaics, Spin coating, Rapid thermal processing
Citation
Majula, L., Mlyuka, N., Samiji, M., Bryce, R., Kim, D., Kim, S., Lee, H. and Choi, H. (2015). Spin-coated kesterite CZTS thin films for photovoltaic applications. Journal of the Korean Physical Society, 67(6), pp.1078-1081.