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Cation co-doping into ZnS quantum dots: towards visible light sensing applications

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Abstract

Efficient and environmentally benign visible light responsive materials have been sought after owing to their interesting applications such as visible light photocatalysis, visible light water splitting and visible light sensing. In this research study, the effect of co-doping on the absorption and electrical properties of ZnS quantum dots is studied. Upon co-doping of Fe and Cu into ZnS quantum dots, a new absorption band in the visible region is observed. Furthermore, these quantum dots show photoresponse in the visible region unlike their undoped counterparts that is only effective in the UV region, suggesting their utility in light sensing applications.

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Acknowledgements

We acknowledge JNCASR, Sheikh Saqr Laboratory and Department of Science and Technology, Government of India for financial support. GKG and PM thank CSIR for a research fellowship.

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Authors and Affiliations

  1. New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Bangalore, 560064, India

    G KRISHNAMURTHY GRANDHI, PAYEL MONDAL & RANJANI VISWANATHA

  2. International Centre for Materials Science, Jawaharlal Nehru Centre for Advanced Scientific Research, Bangalore, 560064, India

    MAHESH KRISHNA & RANJANI VISWANATHA

  3. School of Advanced Materials, Jawaharlal Nehru Centre for Advanced Scientific Research, Bangalore, 560064, India

    PAYEL MONDAL & RANJANI VISWANATHA

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  1. G KRISHNAMURTHY GRANDHI
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  2. MAHESH KRISHNA
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  3. PAYEL MONDAL
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  4. RANJANI VISWANATHA
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Correspondence to RANJANI VISWANATHA.

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This article is part of the Topical Collection: SAMat Focus Issue.

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GRANDHI, G.K., KRISHNA, M., MONDAL, P. et al. Cation co-doping into ZnS quantum dots: towards visible light sensing applications. Bull Mater Sci 43, 301 (2020). https://doi.org/10.1007/s12034-020-02233-0

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  • DOI: https://doi.org/10.1007/s12034-020-02233-0

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