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Open AccessArticle

Copper-Zinc-Tin-Sulfur Thin Film Using Spin-Coating Technology

Department of Microelectronic Engineering, National Kaohsiung Marine University, Kaohsiung 811, Taiwan
Institute of Electro-Optical and Materials Science, National Formosa University, 64 Wen-Hwa Rd, Hu-Wei, Yun-Lin 632, Taiwan
Author to whom correspondence should be addressed.
Academic Editor: Dirk Poelman
Materials 2016, 9(7), 526;
Received: 22 May 2016 / Revised: 24 June 2016 / Accepted: 27 June 2016 / Published: 29 June 2016
(This article belongs to the Special Issue Selected Papers from ICASI 2016)
Cu2ZnSnS4 (CZTS) thin films were deposited on glass substrates by using spin-coating and an annealing process, which can improve the crystallinity and morphology of the thin films. The grain size, optical gap, and atomic contents of copper (Cu), zinc (Zn), tin (Sn), and sulfur (S) in a CZTS thin film absorber relate to the concentrations of aqueous precursor solutions containing copper chloride (CuCl2), zinc chloride (ZnCl2), tin chloride (SnCl2), and thiourea (SC(NH2)2), whereas the electrical properties of CZTS thin films depend on the annealing temperature and the atomic content ratios of Cu/(Zn + Sn) and Zn/Sn. All of the CZTS films were characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDXS), Raman spectroscopy, and Hall measurements. Furthermore, CZTS thin film was deposited on an n-type silicon substrate by using spin-coating to form an Mo/p-CZTS/n-Si/Al heterostructured solar cell. The p-CZTS/n-Si heterostructured solar cell showed a conversion efficiency of 1.13% with Voc = 520 mV, Jsc = 3.28 mA/cm2, and fill-factor (FF) = 66%. View Full-Text
Keywords: CZTS thin film; solar cell; optical band gap; conversion efficiency CZTS thin film; solar cell; optical band gap; conversion efficiency
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Yeh, M.-Y.; Lei, P.-H.; Lin, S.-H.; Yang, C.-D. Copper-Zinc-Tin-Sulfur Thin Film Using Spin-Coating Technology. Materials 2016, 9, 526.

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