The structural and optical constants of Ag2S semiconductor nanostructure in the far-infrared
Background In this paper a template-free precipitation method was used as an easy and low cost way to synthesize Ag2S semiconductor nanoparticles. The Kramers–Kronig method (K–K) and classical dispersion theory was applied to calculate the optical constants of the prepared samples, such as the refl...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Chemistry Central
2015
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| Online Access: | http://psasir.upm.edu.my/id/eprint/46703/1/The%20structural%20and%20optical%20constants%20of%20Ag2S%20semiconductor%20nanostructure%20in%20the%20far-infrared.pdf |
| _version_ | 1796974715432075264 |
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| author | Zamiri, Reza Ahangar, Hossein Abastabar Zakaria, Azmi Zamiri, Golnoosh Shabani, Mehdi Singh, Budhendra Ferreira, J.M.F. |
| author_facet | Zamiri, Reza Ahangar, Hossein Abastabar Zakaria, Azmi Zamiri, Golnoosh Shabani, Mehdi Singh, Budhendra Ferreira, J.M.F. |
| author_sort | Zamiri, Reza |
| collection | UPM |
| description | Background
In this paper a template-free precipitation method was used as an easy and low cost way to synthesize Ag2S semiconductor nanoparticles. The Kramers–Kronig method (K–K) and classical dispersion theory was applied to calculate the optical constants of the prepared samples, such as the reflective index n(ω) and dielectric constant ε(ω) in Far-infrared regime.
Results
Nanocrystalline Ag2S was synthesized by a wet chemical precipitation method. Ag2S nanoparticle was characterized by X-ray diffraction, Scanning Electron Microscopy, UV-visible, and FT-IR spectrometry. The refinement of the monoclinic β-Ag2S phase yielded a structure solution similar to the structure reported by Sadanaga and Sueno. The band gap of Ag2S nanoparticles is around 0.96 eV, which is in good agreement with previous reports for the band gap energy of Ag2S nanoparticles (0.9–1.1 eV).
Conclusion
The crystallite size of the synthesized particles was obtained by Hall-Williamson plot for the synthesized Ag2S nanoparticles and it was found to be 217 nm. The Far-infrared optical constants of the prepared Ag2S semiconductor nanoparticles were evaluated by means of FTIR transmittance spectra data and K–K method. |
| first_indexed | 2024-03-06T09:01:01Z |
| format | Article |
| id | upm.eprints-46703 |
| institution | Universiti Putra Malaysia |
| language | English |
| last_indexed | 2024-03-06T09:01:01Z |
| publishDate | 2015 |
| publisher | Chemistry Central |
| record_format | dspace |
| spelling | upm.eprints-467032018-02-21T07:37:04Z http://psasir.upm.edu.my/id/eprint/46703/ The structural and optical constants of Ag2S semiconductor nanostructure in the far-infrared Zamiri, Reza Ahangar, Hossein Abastabar Zakaria, Azmi Zamiri, Golnoosh Shabani, Mehdi Singh, Budhendra Ferreira, J.M.F. Background In this paper a template-free precipitation method was used as an easy and low cost way to synthesize Ag2S semiconductor nanoparticles. The Kramers–Kronig method (K–K) and classical dispersion theory was applied to calculate the optical constants of the prepared samples, such as the reflective index n(ω) and dielectric constant ε(ω) in Far-infrared regime. Results Nanocrystalline Ag2S was synthesized by a wet chemical precipitation method. Ag2S nanoparticle was characterized by X-ray diffraction, Scanning Electron Microscopy, UV-visible, and FT-IR spectrometry. The refinement of the monoclinic β-Ag2S phase yielded a structure solution similar to the structure reported by Sadanaga and Sueno. The band gap of Ag2S nanoparticles is around 0.96 eV, which is in good agreement with previous reports for the band gap energy of Ag2S nanoparticles (0.9–1.1 eV). Conclusion The crystallite size of the synthesized particles was obtained by Hall-Williamson plot for the synthesized Ag2S nanoparticles and it was found to be 217 nm. The Far-infrared optical constants of the prepared Ag2S semiconductor nanoparticles were evaluated by means of FTIR transmittance spectra data and K–K method. Chemistry Central 2015 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/46703/1/The%20structural%20and%20optical%20constants%20of%20Ag2S%20semiconductor%20nanostructure%20in%20the%20far-infrared.pdf Zamiri, Reza and Ahangar, Hossein Abastabar and Zakaria, Azmi and Zamiri, Golnoosh and Shabani, Mehdi and Singh, Budhendra and Ferreira, J.M.F. (2015) The structural and optical constants of Ag2S semiconductor nanostructure in the far-infrared. Chemistry Central Journal, 9 (28). pp. 1-6. ISSN 1752-153X 10.1186/s13065-015-0099-y |
| spellingShingle | Zamiri, Reza Ahangar, Hossein Abastabar Zakaria, Azmi Zamiri, Golnoosh Shabani, Mehdi Singh, Budhendra Ferreira, J.M.F. The structural and optical constants of Ag2S semiconductor nanostructure in the far-infrared |
| title | The structural and optical constants of Ag2S semiconductor nanostructure in the far-infrared |
| title_full | The structural and optical constants of Ag2S semiconductor nanostructure in the far-infrared |
| title_fullStr | The structural and optical constants of Ag2S semiconductor nanostructure in the far-infrared |
| title_full_unstemmed | The structural and optical constants of Ag2S semiconductor nanostructure in the far-infrared |
| title_short | The structural and optical constants of Ag2S semiconductor nanostructure in the far-infrared |
| title_sort | structural and optical constants of ag2s semiconductor nanostructure in the far infrared |
| url | http://psasir.upm.edu.my/id/eprint/46703/1/The%20structural%20and%20optical%20constants%20of%20Ag2S%20semiconductor%20nanostructure%20in%20the%20far-infrared.pdf |
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