The effective reduction and regeneration triiodide/iodide (I 3-/I-) redox couple are important for an efficient Dye Sensitized Solar Cell (DSSC) that is ruled by the properties of the counter electrode (CE). Among the non-noble metal electro catalysts, transition metal dichalcogenide, molybdenum disulphide has been identified as a low cost and efficient platinum free potential counter electrode material for Dye Sensitized Solar Cells (DSSCs). The present work reports, the morphological effect

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... MoS 2 nanoflakes via convenient hydrothermal method. The physical and chemical properties of the as-synthesized samples were characterized using different analytical tools. From the morphological studies, it is observed that the nano flakes have a layered planar structure with smooth surfaces which benefit the enhancement of electrochemical activity. The UV-diffuse reflectance spectrum confirms the band structure transition due to the quantum confinement effect of MoS 2. The photoconductivity studies revealed that there is a linear increase of current in the dark and visible light-illuminated MoS 2 nanoflakes with increase in the applied field. Thus, the improved photoconductive and interesting behavior of MoS 2 nanoflakes validates it as a promising counter electrode for DSSCs.