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Electrical and photoresponse properties of Au/ reduced graphene:poly(3-hexylthiophene) nanocomposite /p-Si photodiodes

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Abstract

Au/reduced graphene:poly(3-hexylthiophene) (P3HT) nanocomposite/p-Si/Al diodes have been prepared and their electrical characteristics have been investigated using current–voltage, capacitance–voltage and conductance–voltage measurements. The electronic parameters such as ideality factor (n) and barrier height (\(\Phi _{\mathrm{B}0})\) were determined. The photocurrent of the diodes is higher than their dark current. This indicates that the diodes exhibited a photoconducting behavior under various illumination conditions. The diode having molar ratio of RG:P3HT \(=\) 0.005 gives the highest photoresponsivity. This diode was analyzed in detail. The prepared Au/ RG:P3HT nanocomposite/p-Si/Al diode can be used as a solar position sensor for two axes tracking systems, a light meter, a sunlight detector and automatic shutter control sensor.

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Acknowledgments

This paper was funded by King Abdulaziz University, under Grant No. (9-130-1434-HiCi). Authors, therefore, acknowledge technical and financial support of KAU.

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Authors and Affiliations

  1. Physics Department, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Saudi Arabia

    S. Wageh, Ahmed A. Al-Ghamdi, S. C. Tjong & F. Yakuphanoglu

  2. Physics and Engineering Mathematics Department, Facultyof Electronic Engineering, Menoufia University, Menouf, 32952, Egypt

    S. Wageh

  3. Electrical and computer engineering Department, Faculty of Engineering, King Abdulaziz University, Jeddah, Saudi Arabia

    Yusuf Al-Turki

  4. Department of Physics, Faculty of Science, Fırat University, Elazığ, Turkey

    Aysegul Dere

  5. Department of Physics and Materials Science, City University of Hong Kong, Kowloon, Hong Kong

    S. C. Tjong & Farid El-Tantawy

  6. Department of Physics, Faculty of Science, Suez Canal University, Ismailia, Egypt

    F. Yakuphanoglu

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  1. S. Wageh
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  2. Ahmed A. Al-Ghamdi
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  3. Yusuf Al-Turki
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  4. Aysegul Dere
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  5. S. C. Tjong
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  6. Farid El-Tantawy
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  7. F. Yakuphanoglu
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Correspondence to Ahmed A. Al-Ghamdi or F. Yakuphanoglu.

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Wageh, S., Al-Ghamdi, A.A., Al-Turki, Y. et al. Electrical and photoresponse properties of Au/ reduced graphene:poly(3-hexylthiophene) nanocomposite /p-Si photodiodes. Opt Quant Electron 47, 1779–1789 (2015). https://doi.org/10.1007/s11082-014-0035-8

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