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Optical, thermophysical and electrical characterization of PMMA (CdSe QDs) composite films

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Abstract

The concentration dependence of optical, thermophysical and electrical behavior, based on poly-methyl methacrylate filled with CdSe quantum dots (PMMA(CdSe)) have been investigated. The PMMA(CdSe) concentration was 0.001, 0.005, 0.01 and 0.05 wt.%. The composites were prepared in the form of films by the solution casting technique. The optical properties of PMMA(CdSe) films have showed that, there is a red shift of the absorption and photoluminescence (PL) after the QDs were added into PMMA. The PL peak intensity of the composite was enhanced by ≈ 2.5 times compared to the CdSe QDs. The thermal conductivity (k) was obtained by measuring the thermal diffusivity (α) and thermal effusivity (e) using the photoacoustic (PA) technique. The composites exhibit ≈ 120 % improvement in k at 0.05 wt.% . Furthermore, the dc electrical conductivity measurements of pure and doped PMMA, showed that the obtained values were enhanced about four orders of magnitude for the highest concentration compared with pure PMMA at 500 0C.

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Acknowledgments

The authors wish to thank Taif University for the grant research no. (1/432/432). The Quantum Optics group at Taif University is also thanked for their assistance during this work.

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Authors and Affiliations

  1. Department of Physics, Faculty of Science, Taif University, Taif, Kingdom of Saudi Arabia

    N. M. Al-Hosiny, S. Abdallah, M. A. A. Moussa & Ali Badawi

  2. Department of Mathematical and Physical Engineering, Faculty of Engineering (Shoubra), Benha University, Banha, Egypt

    S. Abdallah

  3. Department of Physics, Faculty of Science, Mansoura University, Mansoura, Egypt

    M. A. A. Moussa

  4. Physics Department, College of Science, Al Jouf University, Al Jouf, Saudi Arabia

    N. M. Al-Hosiny

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  1. N. M. Al-Hosiny
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  2. S. Abdallah
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  3. M. A. A. Moussa
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  4. Ali Badawi
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Correspondence to M. A. A. Moussa.

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Al-Hosiny, N.M., Abdallah, S., Moussa, M.A.A. et al. Optical, thermophysical and electrical characterization of PMMA (CdSe QDs) composite films. J Polym Res 20, 76 (2013). https://doi.org/10.1007/s10965-013-0076-x

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  • DOI: https://doi.org/10.1007/s10965-013-0076-x

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