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Trap-Assisted Enlarged Photoresponsivity of Er-Doped In2O3 Thin Films

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Optical and Wireless Technologies

Part of the book series: Lecture Notes in Electrical Engineering ((LNEE,volume 546))

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Abstract

Undoped and Erbium (Er) doped In2O3 (In2O3:Er) thin films (TFs) were deposited on p-Si (100) substrates by sol-gel spin coating technique followed by open-air annealing. Gold (Au) Schottky contact based devices showed lower ideality factor and higher barrier height for the In2O3:Er in comparison with the undoped one. The enhanced photocurrent for the In2O3:Er TFs makes it more photosensitive than undoped In2O3 TFs. The responsivity curve shows a blue shift in near band edge absorption for the In2O3:Er TFs. As a whole, there was a reduction in trap density with the incorporation of Er into In2O3 lattice and room temperature photo responsivity curves can be directly used to track the trap-related optoelectronic properties of a light-sensitive material.

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Acknowledgements

The authors gratefully acknowledge C.S.I.R. (03(1355)/16/EMR-II), N.I.T. Durgapur and Govt. of India for financial support.

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Authors and Affiliations

  1. Department of Physics, National Institute of Technology Durgapur, Durgapur, 713209, India

    Anupam Ghosh, Shyam Murli Manohar Dhar Dwivedi & Aniruddha Mondal

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  1. Anupam Ghosh
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  2. Shyam Murli Manohar Dhar Dwivedi
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  3. Aniruddha Mondal
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Corresponding author

Correspondence to Aniruddha Mondal .

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Editors and Affiliations

  1. Department of Electronics and Communication Engineering, Malaviya National Institute of Technology, Jaipur, Rajasthan, India

    Vijay Janyani

  2. Department of Electronics and Communication Engineering, Malaviya National Institute of Technology, Jaipur, Rajasthan, India

    Ghanshyam Singh

  3. Department of Electronics and Communication Engineering, Manipal University Jaipur, Jaipur, Rajasthan, India

    Manish Tiwari

  4. Department of Information Engineering, Electronics and Telecommunications, Sapienza University of Rome, Rome, Italy

    Antonio d’Alessandro

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Ghosh, A., Dhar Dwivedi, S.M.M., Mondal, A. (2020). Trap-Assisted Enlarged Photoresponsivity of Er-Doped In2O3 Thin Films. In: Janyani, V., Singh, G., Tiwari, M., d’Alessandro, A. (eds) Optical and Wireless Technologies . Lecture Notes in Electrical Engineering, vol 546. Springer, Singapore. https://doi.org/10.1007/978-981-13-6159-3_7

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  • DOI: https://doi.org/10.1007/978-981-13-6159-3_7

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  • Publisher Name: Springer, Singapore

  • Print ISBN: 978-981-13-6158-6

  • Online ISBN: 978-981-13-6159-3

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