Preparation and Photoelectric Properties of MoS₂ Microspheres

MoS₂ microspheres were synthesized by a hydrothermal method using sodium molybdate as the molybdenum source and thiourea as the sulfur source, were used as the counter electrode of dye-sensitized solar cells. This paper discussed the influence of the thiourea concentration on the preparation and photoelectric properties of MoS₂ microspheres. The results show that the crystallinity, microsphere structure, photoelectric conversion efficiency and catalytic activity of MoS₂ reach the best state when the Mo/S molar ratio is 1:4. Therefore, the thiourea concentration has an important effect on the structure, morphology and photoelectric properties of MoS₂. The conclusion will provide the basis for us to improve the electrode material performance of MoS₂ to replace Pt counter electrode. (paper)