Facile synthesis of ZnS/CdS and CdS/ZnS core-shell nanoparticles using microwave irradiation and their optical properties
ZnS/CdS and CdS/ZnS core shell nanoparticles with tunable shell thickness were synthesized via a two steps route under microwave irradiation. In the first step core nanoparticles were prepared using polyol method, and in the second step capping process of shells were performed at moderate temperatur...
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| Format: | Article |
| Language: | English |
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National Institute of Materials Physics, National Institute of Optoelectronics
2012
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| Online Access: | http://psasir.upm.edu.my/id/eprint/52272/ http://psasir.upm.edu.my/id/eprint/52272/1/Facile%20synthesis%20of%20ZnSCdS%20and%20CdSZnS%20core-shell%20nanoparticles%20using%20microwave%20irradiation%20and%20their%20optical%20properties.pdf |
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| author | Soltani, Nayereh Saion, Elias Haghiri, Maryam Erfani Bahrami, Afarin Navasery, Manizheh Saraee, Khadijeh Rezaee Ebrahim Hussein, Mohd Zobir |
| author_facet | Soltani, Nayereh Saion, Elias Haghiri, Maryam Erfani Bahrami, Afarin Navasery, Manizheh Saraee, Khadijeh Rezaee Ebrahim Hussein, Mohd Zobir |
| author_sort | Soltani, Nayereh |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | ZnS/CdS and CdS/ZnS core shell nanoparticles with tunable shell thickness were synthesized via a two steps route under microwave irradiation. In the first step core nanoparticles were prepared using polyol method, and in the second step capping process of shells were performed at moderate temperature by choosing ethanol as a solvent. The thickness of the shells was controlled by adjusting the concentration of core nanoparticles and shell precursors. The structural and chemical characterizations were performed using X-ray diffraction, energy dispersive X-ray spectroscopy and transmission electron microscopy which provide direct evidence for shell growth. The structures of ZnS/CdS and CdS/ZnS core shell nanoparticles were similar to the cubic and hexagonal core structures, respectively. The optical properties of obtained core shell nanoparticles were characterized using UV-Visible and photoluminescence spectroscopy. The absorption edge of ZnS/CdS core shells shows a red shift compared to ZnS (core) while for CdS/ZnS, the absorption edge shows a blue shift compare to CdS (core) owing to the size effect and the potential-well effect. The emission peaks of ZnS/CdS and CdS/ZnS core shell nanoparticles in the range of 400-650 nm are from sulfur, zinc and cadmium vacancy defects and created surface states at ZnS/CdS and CdS/ZnS interfaces. |
| first_indexed | 2025-11-15T10:32:04Z |
| format | Article |
| id | upm-52272 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T10:32:04Z |
| publishDate | 2012 |
| publisher | National Institute of Materials Physics, National Institute of Optoelectronics |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-522722017-06-05T05:38:32Z http://psasir.upm.edu.my/id/eprint/52272/ Facile synthesis of ZnS/CdS and CdS/ZnS core-shell nanoparticles using microwave irradiation and their optical properties Soltani, Nayereh Saion, Elias Haghiri, Maryam Erfani Bahrami, Afarin Navasery, Manizheh Saraee, Khadijeh Rezaee Ebrahim Hussein, Mohd Zobir ZnS/CdS and CdS/ZnS core shell nanoparticles with tunable shell thickness were synthesized via a two steps route under microwave irradiation. In the first step core nanoparticles were prepared using polyol method, and in the second step capping process of shells were performed at moderate temperature by choosing ethanol as a solvent. The thickness of the shells was controlled by adjusting the concentration of core nanoparticles and shell precursors. The structural and chemical characterizations were performed using X-ray diffraction, energy dispersive X-ray spectroscopy and transmission electron microscopy which provide direct evidence for shell growth. The structures of ZnS/CdS and CdS/ZnS core shell nanoparticles were similar to the cubic and hexagonal core structures, respectively. The optical properties of obtained core shell nanoparticles were characterized using UV-Visible and photoluminescence spectroscopy. The absorption edge of ZnS/CdS core shells shows a red shift compared to ZnS (core) while for CdS/ZnS, the absorption edge shows a blue shift compare to CdS (core) owing to the size effect and the potential-well effect. The emission peaks of ZnS/CdS and CdS/ZnS core shell nanoparticles in the range of 400-650 nm are from sulfur, zinc and cadmium vacancy defects and created surface states at ZnS/CdS and CdS/ZnS interfaces. National Institute of Materials Physics, National Institute of Optoelectronics 2012 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/52272/1/Facile%20synthesis%20of%20ZnSCdS%20and%20CdSZnS%20core-shell%20nanoparticles%20using%20microwave%20irradiation%20and%20their%20optical%20properties.pdf Soltani, Nayereh and Saion, Elias and Haghiri, Maryam Erfani and Bahrami, Afarin and Navasery, Manizheh and Saraee, Khadijeh Rezaee Ebrahim and Hussein, Mohd Zobir (2012) Facile synthesis of ZnS/CdS and CdS/ZnS core-shell nanoparticles using microwave irradiation and their optical properties. Chalcogenide Letters, 9 (9). pp. 379-387. ISSN 1584-8663 http://chalcogen.ro/index.php/journals/chalcogenide-letters/11-cl/101-volume-9-number-9-september-2012 |
| spellingShingle | Soltani, Nayereh Saion, Elias Haghiri, Maryam Erfani Bahrami, Afarin Navasery, Manizheh Saraee, Khadijeh Rezaee Ebrahim Hussein, Mohd Zobir Facile synthesis of ZnS/CdS and CdS/ZnS core-shell nanoparticles using microwave irradiation and their optical properties |
| title | Facile synthesis of ZnS/CdS and CdS/ZnS core-shell nanoparticles using microwave irradiation and their optical properties |
| title_full | Facile synthesis of ZnS/CdS and CdS/ZnS core-shell nanoparticles using microwave irradiation and their optical properties |
| title_fullStr | Facile synthesis of ZnS/CdS and CdS/ZnS core-shell nanoparticles using microwave irradiation and their optical properties |
| title_full_unstemmed | Facile synthesis of ZnS/CdS and CdS/ZnS core-shell nanoparticles using microwave irradiation and their optical properties |
| title_short | Facile synthesis of ZnS/CdS and CdS/ZnS core-shell nanoparticles using microwave irradiation and their optical properties |
| title_sort | facile synthesis of zns/cds and cds/zns core-shell nanoparticles using microwave irradiation and their optical properties |
| url | http://psasir.upm.edu.my/id/eprint/52272/ http://psasir.upm.edu.my/id/eprint/52272/ http://psasir.upm.edu.my/id/eprint/52272/1/Facile%20synthesis%20of%20ZnSCdS%20and%20CdSZnS%20core-shell%20nanoparticles%20using%20microwave%20irradiation%20and%20their%20optical%20properties.pdf |