• Origin of visible photoluminescence from porous silicon as studied by Raman spectroscopy

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    • Keywords


      Porous silicon; nanoparticles; photoluminescence; Raman spectroscopy

    • Abstract


      In this paper we discuss the different models proposed to explain the visible luminescence in porous silicon (PS). We review our recent photoluminescence and Raman studies on PS as a function of different preparation conditions and isochronal thermal annealing. Our results can be explained by a hybrid model which incorporates both nanostructures for quantum confinement and silicon complexes (such as SiHx and siloxene) and defects at Si/SiO2 interfaces as luminescent centres.

    • Author Affiliations


      A Roy1 2 K Jayaram1 A K Sood1 3

      1. Department of Physics, Indian Institute of Science, Bangalore - 560 012, India
      2. Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore - 560 012, India
      3. Jawaharlal Nehru Centre for Advanced Scientific Research, Bangalore - 560 012, India
    • Dates

  • Bulletin of Materials Science | News

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      Posted on July 25, 2019

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