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A green and simple hydrothermal approach to synthesize needle-like CuInS nanostructures for solar cells

Journal of Materials Science: Materials in Electronics, ISSN: 1573-482X, Vol: 29, Issue: 18, Page: 16050-16056
2018
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Article Description

Herein, needle-like nanostructures of CuInS (CIS) were prepared through a green, simple and surfactant-free hydrothermal method. In this method, cysteine was employed as a capping agent, sulfide source and reductant for successful reducing Cu–Cu. Moreover, [Cu(en)]Cl complex was synthesized as a new Cu source. Effect of different parameters on particles shape and size was well studied. Finally, as-prepared needle-like CIS nanostructures were utilized in quantum dot-sensitized solar cells (QDSSCs) and their behavior and efficiency were also analyzed. The obtained results emphasize on significant effect of particles shape and size on output efficiency of solar cells and using needle-like nanostructures led to higher efficiency compared to other morphologies. Depositing needle-like nanostructures of CIS on nanoparticles of CIS resulted in ~ 171 and ~ 95% improvements in efficiency compared to bare nanoparticles of CIS and bare needle-like CIS nanostructures, respectively.

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