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Graphene quantum dots as a green photosensitizer with carbon-doped ZnO nanorods for quantum-dot-sensitized solar cell applications

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Abstract

Graphene quantum dots (GQDs), N-doped GQDs (NGQDs) and S, N co-doped GQDs (SNGQDs) were synthesized using hydrothermal methods. All GQDs were attached with carbon-doped ZnO nanorods (C-ZnO NRs) grown on fluorine-doped tin oxide (FTO)-coated glass substrates, for the fabrication of metal-free eco-friendly quantum-dot-sensitized solar cells (QDSSCs). SNGQD-decorated nanorod-based solar cells demonstrated maximum open circuit voltage (\(V_{\mathrm{OC}}\sim 360\) mV), short circuit current (\(J_{\mathrm{SC}}\sim 1.84\) mA \(\hbox {cm}^{-2})\) and power conversion efficiency ( \(\eta \sim 0.293\)%) compared to other devices.

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Acknowledgements

This research work was funded by CSIR Extramural Research Grant, Government of India.

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Authors and Affiliations

  1. Department of Physics, National Institute of Technology, Agartala, 799046, India

    Tanmoy Majumder & Suvra Prakash Mondal

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  1. Tanmoy Majumder
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  2. Suvra Prakash Mondal
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Correspondence to Suvra Prakash Mondal.

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Majumder, T., Mondal, S.P. Graphene quantum dots as a green photosensitizer with carbon-doped ZnO nanorods for quantum-dot-sensitized solar cell applications. Bull Mater Sci 42, 65 (2019). https://doi.org/10.1007/s12034-019-1755-y

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