A nontoxic solvent based sol–gel Cu2ZnSnS4 thin film for high efficiency and scalable low-cost photovoltaic cells
作者： Venkatesh Tunuguntla , Wei-Chao Chen , Pei-Hsuan Shih , Indrajit Shown , Yi-Rung Lin
DOI: 10.1039/C5TA02833G
关键词:
摘要: A non-toxic sol–gel spin coating approach is one of the attractive routes to achieve high atom economy, good quality Cu2ZnSnS4 (CZTS) thin films. In this paper, we introduce 1,3-dimethyl-2-imadazolidinone as a solvent for preparation highly viscous, homogeneous, nontoxic CZTS ink that eliminates need use additional binders or additives disperse precursors. addition, further report annealing coated film in 6% diluted H2S gas with an externally supplied tin and sulfur environment suppress loss from thin-film surface enhance device performance. grain sizes greater than 0.7 μm have been achieved no detectable presence carbon rich layers containing fine at Mo/CZTS interface. An efficiency 5.67% champion fabricated here has open circuit voltage 0.58 V, short current density 18.48 mA cm−2, fill factor 53.14%.
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