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Photothermal investigation study of porous silicon layer doped lithium

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Abstract

This paper presents a series of experimental photothermal deflection technique (PTD) spectra of porous silicon layers doped with lithium on crystalline silicon backing (PS/Li) and their numerical analysis. The aim of this work is to investigate the influence of Li doping on the opto-thermal properties (optical absorption, band-gap energy, thermal diffusivity and thermal conductivity). Also, we correlate these results with other evaluation studies such as I–V measurements and atomic force microscope analysis performed on the material. We observe a red shift of the gap, which can be related to the reduction of crystallite size. Moreover, we notice a decrease of thermal properties with the same behavior as electrical conductivity.

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Authors and Affiliations

  1. Photothermal Laboratory, Nabeul, Tunisia

    S. Ktifa, F. Saadallah & N. Yacoubi

  2. Photovoltaic Laboratory, Research and Technology Centre of Energy, Borj-Cedria Science and Technology Park, BP 95, 2050, Hammam-Lif, Tunisia

    I. Haddadi & H. Ezzaouia

Authors
  1. S. Ktifa
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  2. I. Haddadi
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  3. F. Saadallah
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  4. H. Ezzaouia
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  5. N. Yacoubi
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Correspondence to S. Ktifa.

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Ktifa, S., Haddadi, I., Saadallah, F. et al. Photothermal investigation study of porous silicon layer doped lithium. Appl. Phys. A 110, 157–161 (2013). https://doi.org/10.1007/s00339-012-7479-0

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  • DOI: https://doi.org/10.1007/s00339-012-7479-0

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