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Solar Light Photodetectors Based on Nanocrystalline Zinc Oxide Cadmium Doped/p-Si Heterojunctions

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Abstract

The transparent undoped and Cd doped ZnO thin films were deposited on p-type Si substrates to fabricate Cd-ZnO/p-Si diodes. The Cd doped ZnO thin films exhibited a polycrystalline structure. The transmittance measurements indicate that the films have transparency ranging from 47% to 92% for the UV and visible regions. The optical band gap of the films were found to be ranging from 3.27 to 3.19 eV with Cd content. The photoelectrical properties of the diodes under various illuminations were analyzed. The undoped and Cd doped ZnO thin films/p-silicon devices exhibit a photovoltaic behavior with the obtained photovoltaic parameters. The continuous distribution of interface states in the diodes is analyzed by capacitance voltage (C-V) measurements. The diode having 0.1% Cd doped Zno showed the highest photosensitivity in all the diodes with the photoresponsivity of 3.6 x10− 4. We suggest that the fabricated CdZnO based diodes can be used as photodetector in optic and optoelectronic communications.

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Acknowledgments

This work was supported by Scientific Research Projects Foundation (BAP) of Kahramanmaraş Sütçü Imam University under Grant No. 2017/1-72 D. Also, authors would like to extend their sincere appreciation to the Deanship of Scientific Research at king Saud University for its funding this Research group NO RG-1435-059.

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Authors and Affiliations

  1. Department of Bioscience and Engineering, Kahramanmaraş Sütçü Imam University, Kahramanmaraş, Turkey

    Bestoon Anwer Hamad Ameen

  2. Physics Department, Faculty of Science and Arts, Kahramanmaraş Sütçü Imam University, Kahramanmaraş, Turkey

    Abdulkadir Yildiz

  3. Department of Physics and Astronomy, College of Science, King Saud University, Riyadh, Saudi Arabia

    W. A. Farooq

  4. Faculty of Science and Arts, Department of Physics, Firat University, 23169, Elazig, Turkey

    Fahrettin Yakuphanoglu

Authors
  1. Bestoon Anwer Hamad Ameen
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  2. Abdulkadir Yildiz
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  3. W. A. Farooq
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  4. Fahrettin Yakuphanoglu
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Correspondence to Fahrettin Yakuphanoglu.

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Ameen, B., Yildiz, A., Farooq, W. et al. Solar Light Photodetectors Based on Nanocrystalline Zinc Oxide Cadmium Doped/p-Si Heterojunctions. Silicon 11, 563–571 (2019). https://doi.org/10.1007/s12633-017-9656-4

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  • DOI: https://doi.org/10.1007/s12633-017-9656-4

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