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Effect of Pd concentration on the structural, morphological and photodiode properties of TiO2 nanoparticles

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Abstract

In this work, intrinsic and doped TiO2 nanoparticles with different Palladium (Pd) concentrations were successfully synthesized via solvothermal method. The structural, morphological and optical properties of the as-synthesized nanoparticles are investigated. Photodiode properties of the as-synthesized nanoparticles based spin coated films are also investigated. A p-n and p-i-n heterojunction structures are fabricated on ITO coated glass and studied for small (± 5 V) bias voltage. From the IV characterization, responsivity, sensitivity, external quantum efficiency and switch current ratio is evaluated for both the heterostructures. Results showed that the proposed p-i-n photodiode attain good stability and quick response as compared to the conventional p-n photodiode. Hall measurement confirmed that heavily Pd doped TiO2 nanoparticles is an efficient p-type material for fabrication of thin film photo-devices.

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Acknowledgements

This work was supported by the Science and Engineering Research Board (SERB), India (File No. EEQ/2016/000119).

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Authors and Affiliations

  1. Department of Physics, University of Jammu, Jammu, 180006, India

    Bikram Singh, Sandeep Arya, Asha Sharma, Prerna Mahajan, Jyoti Gupta, Anoop Singh & Sonali Verma

  2. Department of Physics, Government Gandhi Memorial Science College, Jammu, 180001, India

    Pankaj Bandhoria

  3. SKKU Advanced Institute of Nanotechnology, Sungkyunkwan University, 16419, Suwon, Republic of Korea

    Vishal Bharti

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  1. Bikram Singh
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Singh, B., Arya, S., Sharma, A. et al. Effect of Pd concentration on the structural, morphological and photodiode properties of TiO2 nanoparticles. J Mater Sci: Mater Electron 31, 65–74 (2020). https://doi.org/10.1007/s10854-019-01095-5

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