Oleylamine-assisted solvothermal synthesis of copper antimony sulfide nanocrystals: Morphology and phase control

M Bella (1, 2, 3) , C. Rivero (2) , S. Blayac (1) , H Basti (1) , M C Record (4) , Pascal Boulet (3)

1 PS2-ENSMSE - Département Packaging et Supports Souples
2 ST-ROUSSET - STMicroelectronics [Rousset]
3 MADIREL - Matériaux divisés, interfaces, réactivité, électrochimie
4 IM2NP - Institut des Matériaux, de Microélectronique et des Nanosciences de Provence

We report a one-pot synthesis of copper antimony sulfide nanocrystals by a facile and easily scalable route using a surfactant assisted solvothermal method. Phase-pure and quasi-monodisperse Cu3SbS4 nanocrystals have successfully been synthetized by adjusting the sulfur to copper molar ratio as well as the surfactant to solvent volumetric ratio. Nanocrystals morphology and chemical composition are characterized. As synthetized and purified nanocrystals are formulated into a colloidal suspension in order to fabricate copper antimony sulfide films. Morphological, electrical and optical characterizations of famatinite films are conducted. The electrical resistivity of the as deposited films is comprised between 10 Ω cm and 48 Ω cm. The optical gap is found to be indirect with a value of 0.82 eV.

Keywords: Film; Sulfide; Ink; Nanoparticle; Solvothermal synthesis

Domains: Chemical Sciences; Material chemistry

M Bella, C. Rivero, S. Blayac, H Basti, M C Record, et al.. Oleylamine-assisted solvothermal synthesis of copper antimony sulfide nanocrystals: Morphology and phase control. Materials Research Bulletin, 2017, 90, pp.188-194. ⟨10.1016/j.materresbull.2017.02.036⟩. ⟨hal-01483318⟩