Abstract
Herein, we report that an efficient nanohybrid material consists of Cd-doped ZnS nanocrystals (NCs), merocyanine and fullerene (C60-pyrrolidine tris acid). Cd-ZnS NCs serve as a substrate for supramolecular complexation between merocyanine 540 and fullerenes. The impact of grafting and co-grafting of dyes on the NCs surface was checked by Fourier transform infrared (FTIR), photoluminescence and ultraviolet–visible (UV–Vis) spectroscopic studies. Cd-doped ZnS NCs were synthesized by wet chemical approach and described by powdered X-ray diffraction, UV–Vis spectroscopy, field emission scanning electron microscopy and transmission electron microscopy. The grafted and co-grafted NCs were then used as an active blend in hybrid solar cells. The hybrid solar cell of grafted material blend (Cd-ZnS-MC540) shows the maximum short circuit current density 4.60 mA cm–2 and power conversion efficiency of 0.83%. The open circuit voltage, fill factors and cell conversion efficiency of all photovoltaic devices based on co-grafted Cd-doped ZnS NCs and P3HT decreases with the increase in concentration of donor and acceptor species. We note that by co-grafting, dye/dye interaction is replaced by dye/fullerene interaction but unfortunately co-grafting may have led to the formation of big clusters. Hence, the lack of morphological homogeneity may be held responsible for the weak performance of the solar cells.
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Acknowledgements
We are highly thankful to the Higher Education Commission, Pakistan, under project No-20/2329/NRPU/R&D/HEC/12 for financial support and Quaid-e-Azam University, Islamabad, for providing laboratory and space facilities.
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Jabeen, U., Shah, S.M., Aamir, M. et al. Grafting and co-grafting of dyes on Cd-doped ZnS nanocrystals and their application on dye-sensitized solar cells. Bull Mater Sci 44, 291 (2021). https://doi.org/10.1007/s12034-021-02575-3
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DOI: https://doi.org/10.1007/s12034-021-02575-3