Composition control in Cu2ZnSnS4 thin films by a sol-gel technique without sulfurization

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Abstract

Kesterite Cu2ZnSnS4 (CZTS) thin films with a smooth, compact and crack-free morphology are obtained via a sol-gel method without sulfurization process. Non-toxic ethylene glycol is selected as solvent, while Cu(CH3COO)2, Zn(CH3COO)2, SnCl 2·2H2O and thiourea are used as raw materials. Chemical composition dependence of CZTS films on pre-annealing and post-annealing process is comprehensively investigated. The analysis of energy dispersive X-ray indicates that composition control of CZTS films can be easily realized by the preparation of precursor solution and varying the annealing conditions.

Original languageEnglish
Pages (from-to)2703-2709
Number of pages7
JournalJournal of Materials Science: Materials in Electronics
Volume25
Issue number6
DOIs
StatePublished - Jun 2014

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