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

  • Bikram Singh
  • Sandeep AryaEmail author
  • Asha Sharma
  • Prerna Mahajan
  • Jyoti Gupta
  • Anoop Singh
  • Sonali Verma
  • Pankaj Bandhoria
  • Vishal Bharti
Article
  • 18 Downloads

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.

Notes

Acknowledgements

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

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

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© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Department of PhysicsUniversity of JammuJammuIndia
  2. 2.Department of PhysicsGovernment Gandhi Memorial Science CollegeJammuIndia
  3. 3.SKKU Advanced Institute of NanotechnologySungkyunkwan UniversitySuwonRepublic of Korea

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