Influence of electron-hole recombination on optical properties of boro-silicate glasses containing CdS quantum dots
| Autor: | S.R. Munishwar, P.P. Pawar, R.S. Gedam |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
010302 applied physics
Photoluminescence Materials science Scanning electron microscope Band gap business.industry Biophysics Analytical chemistry 02 engineering and technology General Chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Biochemistry Atomic and Molecular Physics and Optics Semiconductor Quantum dot 0103 physical sciences Fourier transform infrared spectroscopy 0210 nano-technology High-resolution transmission electron microscopy Spectroscopy business |
| Zdroj: | Journal of Luminescence. 181:367-373 |
| ISSN: | 0022-2313 |
| DOI: | 10.1016/j.jlumin.2016.09.045 |
| Popis: | Semiconductor (CdS) quantum dots were grown in a glass matrix (SiO 2 -B 2 O 3 -ZnO-Na 2 O-K 2 O) by controlled heat treatment. Growth of CdS quantum dots were confirmed by optical absorption (UV–vis), photoluminescence (PL), micro-Raman spectroscopy, X-ray diffraction (XRD) and High resolution transmission electron microscopy (HRTEM). The structural modification occur in glass matrix were studied with Fourier transform infrared spectroscopy (FTIR). Clusters formation due to heat treatment was studied by field emission gun scanning electron microscopy (FEG-SEM). The observed experimental data shows that the CdS QDs size is very well controlled by single stage heat treatment. Size dependent blue shift in optical energy band gap and blue energy shift in PL intensity was observed with annealing time. The overall study of these glasses suggests these glasses are useful as an optical filters. |
| Databáze: | OpenAIRE |
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