Additional file 1.

Three crystal structure models of CuGaS2 and an XRD pattern of an intermediate sample. Figure S1. Three crystal structure models of CuGaS2(a) tetragonal chalcopyrite structure; (b) cation-disordered cubic zincblende modification, (c) cation-disordered hexagonal wurtzite phase. Figure S2. XRD pattern of a sample collected at 220°C for 0 min. In the present case, Cu2-xS (JCPDS 23–0959) seems to contribute to the experimental pattern.

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Liu et al. Nanoscale Research Letters 2013 8:524   doi:10.1186/1556-276X-8-524