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Optical and spectroscopic investigation of tunable size PbS nanocrystals embedded in insulating PVA matrix

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Abstract

The thin film of Inorganic–Organic (Hybrid) nanocomposite (NCs) based on polyvinyl alcohol (PVA) and lead sulfide (PbS) have been synthesized using solution casting technique with different concentrations of PbS. The prepared films were characterized by X-ray diffraction (XRD) and Fourier transform infrared spectroscopy. The XRD confirms the presence of PbS nanoparticle (NPs) in PVA matrix. The morphology and thickness of NCs films were characterized by transmission electron microscopy and scanning electron microscopy, respectively. The optical transmittance (typically 220 nm) and photoluminescence spectra of NCs films were investigated in the wavelength range 300–2400 and 200–800 nm, respectively. The band gap of PbS NPs varies from 0.9 to 1.58 eV by altering the concentration of PbS.

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Acknowledgments

The authors are thankful to the UGC-DAE Consortium for Scientific Research, Indore for funding under collaborative research Scheme (CSR-IC/CRS-92/2014-15/598). Thanks also to the Facilitation Centre for Industrial Plasma Technologies (FCIPT), Gandhinagar for helping in SEM characterization.

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Authors and Affiliations

  1. Dr. K. C. Patel Research and Development Centre, Charotar University of Science and Technology Changa, Anand District, Gujarat, 388421, India

    Mitesh H. Patel, Tapas K. Chaudhuri & Vaibhav K. Patel

  2. UGC-DAE Consortium for Scientific Research, Khandwa Road, Indore, Madhya Pradesh, 452001, India

    T. Shripathi & U. Deshpande

  3. P. D. Patel Institute of Applied Sciences, Charotar University of Science and Technology, Changa, Anand District, Gujarat, 388421, India

    Mitesh H. Patel & Vaibhav K. Patel

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  1. Mitesh H. Patel
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  2. Tapas K. Chaudhuri
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  3. T. Shripathi
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  5. Vaibhav K. Patel
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Correspondence to Vaibhav K. Patel.

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Patel, M.H., Chaudhuri, T.K., Shripathi, T. et al. Optical and spectroscopic investigation of tunable size PbS nanocrystals embedded in insulating PVA matrix. J Mater Sci: Mater Electron 27, 12627–12632 (2016). https://doi.org/10.1007/s10854-016-5395-3

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  • DOI: https://doi.org/10.1007/s10854-016-5395-3

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