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Novel and Simple Solution-processed MIS Ultraviolet (UV) Detector Based on Core–Shell Si/SiO2 Nanocrystals

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Abstract

In the present study, we report a simple and solution-processed visible blind metal–insulator–semiconductor (MIS) ultraviolet (UV) detector based on core–shell Si/SiO2 nanocrystals that are fabricated on interdigitated electrodes. The fabricated photo detector shows high photosensitivity in the UV-B and UV-C wavelength ranges. The absorption spectra of the nano-structured materials used in this work is simulated by the density functional theory (DFT) method and analyzed based on the electronic structure. It is then compared with the experimental results. The synthesized nano materials show very low density of structural defects based on the measured photoluminescence spectra, which results in a fast response time for the fabricated photodetector. Compared to the previously reported similar Si/SiO2-based photo-detectors, the fabricated detector shows very good photo responsivity.

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Authors and Affiliations

  1. Faculty of Engineering, Tehran Science and Research Branch, Islamic Azad University, Tehran, Iran

    S. J. SayyedFattahi & M. Pouladian

  2. School of Engineering-Emerging Technologies, University of Tabriz, 5166614761, Tabriz, Iran

    A. Rostami, M. Dolatyari, M. Rashidi & G. Rostami

Authors
  1. S. J. SayyedFattahi
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  2. A. Rostami
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  3. M. Pouladian
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  4. M. Dolatyari
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  6. G. Rostami
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Correspondence to A. Rostami.

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SayyedFattahi, S.J., Rostami, A., Pouladian, M. et al. Novel and Simple Solution-processed MIS Ultraviolet (UV) Detector Based on Core–Shell Si/SiO2 Nanocrystals. J. Electron. Mater. 43, 1249–1254 (2014). https://doi.org/10.1007/s11664-014-3027-3

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  • DOI: https://doi.org/10.1007/s11664-014-3027-3

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