Synthesis and size dependent optical studies in CdSe quantum dots via inverse micelle technique
Cadmium selenide quantum dots (CdSe QDs) were successfully synthesized without using trioctylphosphine (TOP). The XRD pattern showed zinc-blend phase of the CdSe QDs. The absorption and PL spectra exhibit a strong blue shift as the QDs size decreases due to the quantum confinement effect. In additio...
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2010
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| author | Hamizi, N. Johan, M.R. |
| author_facet | Hamizi, N. Johan, M.R. |
| author_sort | Hamizi, N. |
| building | UM Library |
| collection | Institutional Repository |
| content_provider | Universiti Malaya |
| content_source | UM Research Repository |
| continent | Asia |
| country | Malaysia |
| description | Cadmium selenide quantum dots (CdSe QDs) were successfully synthesized without using trioctylphosphine (TOP). The XRD pattern showed zinc-blend phase of the CdSe QDs. The absorption and PL spectra exhibit a strong blue shift as the QDs size decreases due to the quantum confinement effect. In addition, the quantum efficiency of CdSe QDs with TOP capping is higher than CdSe QDs with oleic acid capping. TEM image shows a spherical shape, compact and dense structure of CdSe QDs. A good agreement between the Tauc's model and experimentally measured absorption spectra of CdSe QDs is achieved. The FTIR peak at similar to 1712 cm(-1) spectra confirms the influence of oleic acid as a capping agent. (C) 2010 Elsevier B.V. All rights reserved. |
| format | Article |
| id | my.um.eprints-12113 |
| institution | Universiti Malaya |
| publishDate | 2010 |
| publisher | Elsevier |
| record_format | eprints |
| spelling | my.um.eprints-121132019-03-13T03:53:34Z http://eprints.um.edu.my/12113/ Synthesis and size dependent optical studies in CdSe quantum dots via inverse micelle technique Hamizi, N. Johan, M.R. Q Science (General) Cadmium selenide quantum dots (CdSe QDs) were successfully synthesized without using trioctylphosphine (TOP). The XRD pattern showed zinc-blend phase of the CdSe QDs. The absorption and PL spectra exhibit a strong blue shift as the QDs size decreases due to the quantum confinement effect. In addition, the quantum efficiency of CdSe QDs with TOP capping is higher than CdSe QDs with oleic acid capping. TEM image shows a spherical shape, compact and dense structure of CdSe QDs. A good agreement between the Tauc's model and experimentally measured absorption spectra of CdSe QDs is achieved. The FTIR peak at similar to 1712 cm(-1) spectra confirms the influence of oleic acid as a capping agent. (C) 2010 Elsevier B.V. All rights reserved. Elsevier 2010 Article PeerReviewed Hamizi, N. and Johan, M.R. (2010) Synthesis and size dependent optical studies in CdSe quantum dots via inverse micelle technique. Materials Chemistry and Physics, 124 (1). pp. 395-398. ISSN 0254-0584, |
| spellingShingle | Q Science (General) Hamizi, N. Johan, M.R. Synthesis and size dependent optical studies in CdSe quantum dots via inverse micelle technique |
| title | Synthesis and size dependent optical studies in CdSe quantum dots via inverse micelle technique |
| title_full | Synthesis and size dependent optical studies in CdSe quantum dots via inverse micelle technique |
| title_fullStr | Synthesis and size dependent optical studies in CdSe quantum dots via inverse micelle technique |
| title_full_unstemmed | Synthesis and size dependent optical studies in CdSe quantum dots via inverse micelle technique |
| title_short | Synthesis and size dependent optical studies in CdSe quantum dots via inverse micelle technique |
| title_sort | synthesis and size dependent optical studies in cdse quantum dots via inverse micelle technique |
| topic | Q Science (General) |
| url | http://eprints.um.edu.my/12113/ |
| url_provider | http://eprints.um.edu.my/ |