Abstract

Alcohol amine system was applied as new solvent to prepare CuInS2 (CIS2) nanoparticles via a facile hot-injection method. The phase structure and morphology of synthesized products were characterized by X-ray diffraction, scanning electron microscopy, and transmission electron microscopy. It turned out that pure-phase wurtzite CIS2 nanoplates can be synthesized at a low temperature of 140°C within 5min with monoethanolamine as solvent and PEG as surfactant, while chalcopyrite and wurtzite phases co-existed in CIS2 products obtained using triethanolamine as the solvent. This work suggested alcohol amine as a cheap, green and effective solvent for the preparation of CIS2 nanoparticles.

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