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

    • Fulltext

       

        Click here to view fulltext PDF


      Permanent link:
      https://www.ias.ac.in/article/fulltext/boms/017/05/0513-0522

    • 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

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

© 2017-2019 Indian Academy of Sciences, Bengaluru.