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Flexible polymer composite films incorporated with Li-ion/reduced graphene oxide: excellent optical and photoluminescence performance

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Abstract

A flexible polymer composite film (PL-rGO) was prepared from reduced graphene oxide (rGO) (derived from graphite) and lithium phosphate (Li3PO4) incorporated in a pale yellow colored polystyrene sulfonic acid (PSSA) polymer by solution casting method. The resulting flexible translucent PL-rGO composite films were obtained with smooth surface and thickness in the range of 2–3 µm. The optical and photoluminescence properties of PL-rGO were explored in the present study. The intensity of photoluminescence spectra at excitation band ∼ 320 nm increases with significant broadening with varying concentration of rGO in the matrix. The evaluated direct and indirect energy bandgap of PL-rGO composite from optical absorbance is in the range of 3.06 ~ 3.26 eV. These results from optical properties for PL-rGO composite indicate the accurate tailoring of the composite by changing the rGO volume fraction.

Highlights

  1. 1.

    The flexible translucent reduced graphene oxide-induced polymeric lithium composite films were obtained with smooth surfaces and thickness in the range of 2–3 µm.

  2. 2.

    The optical properties for PL-rGO composite, indicate that the accurate tailoring of the composite can take place by changing the rGO volume fraction.

  3. 3.

    This study provides a broad view and opens the door for potential applications of PL-rGO as opto-electronics applications.

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Acknowledgements

This work is supported by CHRIST (Grant PDF-8070) (Deemed to be University), Bangalore under POSTDOCTORAL research project. Author would like to acknowledge CHRIST (Deemed to be University) and Department of Physics and Electronics for providing all the necessary facilities for the project.

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Correspondence to Mayank Pandey.

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Pandey, M., Balachandran, M. Flexible polymer composite films incorporated with Li-ion/reduced graphene oxide: excellent optical and photoluminescence performance. Appl Nanosci 10, 401–410 (2020). https://doi.org/10.1007/s13204-019-01183-2

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  • DOI: https://doi.org/10.1007/s13204-019-01183-2

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