γ-Radiation-assisted molecular template route: a new hybrid path for facile synthesis of size-dependent optical properties of ZnS quantum dots
ZnS is a benign and multi-utility semiconductor with absorption in the UV–vis region of the energy spectrum. Nevertheless, the synthesis of ZnS quantum dots (QDs) with tunable optical properties and a reasonable photoluminescent quantum yield (PLQY) adopting a new hybrid method is highly recognized....
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The Royal Society
2025-06-01
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| Series: | Royal Society Open Science |
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| Online Access: | https://royalsocietypublishing.org/doi/10.1098/rsos.250692 |
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| author | Sanju Francis Nisha Kushwah Vishwanadh Bathula Kedarnath Gotluru |
| author_facet | Sanju Francis Nisha Kushwah Vishwanadh Bathula Kedarnath Gotluru |
| author_sort | Sanju Francis |
| collection | DOAJ |
| description | ZnS is a benign and multi-utility semiconductor with absorption in the UV–vis region of the energy spectrum. Nevertheless, the synthesis of ZnS quantum dots (QDs) with tunable optical properties and a reasonable photoluminescent quantum yield (PLQY) adopting a new hybrid method is highly recognized. The present study involves the simple synthesis of self-capped wurtzite ZnS QDs employing a hybrid method comprising a single-source molecular precursor (SSMP), 2-(dimethylamino)ethanethiolate of zinc(II), and γ-radiation followed by elucidation of the formation mechanism of self-capped ZnS QDs. Here, the SSMP has been γ-irradiated in a solution to yield ZnS QDs of varying size at different radiation doses. The crystal structure, elemental composition, shape and optical properties of pristine self-capped ZnS QDs were assessed by powder X-ray diffraction, energy dispersive X-ray spectroscopy, electron microscopy, UV–vis, photoluminescence and diffused reflectance spectroscopy, respectively. The size-tailored emission maximum and optical band gaps were tweaked to a tune of 417–537 nm and 4.17–4.23 eV by altering the γ-radiation dose with PLQYs realized in the range of 10–24%. Lifetimes of these samples are in the range of 1.69–2.68 and 6.82–34.88 ns for the fast- and slow-decaying components, respectively. |
| format | Article |
| id | doaj-art-f68bfd302f8742e1b52e94e4c29a8ab5 |
| institution | OA Journals |
| issn | 2054-5703 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | The Royal Society |
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| spelling | doaj-art-f68bfd302f8742e1b52e94e4c29a8ab52025-08-20T02:22:49ZengThe Royal SocietyRoyal Society Open Science2054-57032025-06-0112610.1098/rsos.250692γ-Radiation-assisted molecular template route: a new hybrid path for facile synthesis of size-dependent optical properties of ZnS quantum dotsSanju Francis0Nisha Kushwah1Vishwanadh Bathula2Kedarnath Gotluru3Radiation Technology Development, Bhabha Atomic Research Centre, Mumbai, Maharashtra, IndiaDepartment of Chemistry, Bhabha Atomic Research Centre, Mumbai, Maharashtra, IndiaMaterials Science Division, Bhabha Atomic Research Centre, Mumbai, Maharashtra, IndiaDepartment of Chemistry, Bhabha Atomic Research Centre, Mumbai, Maharashtra, IndiaZnS is a benign and multi-utility semiconductor with absorption in the UV–vis region of the energy spectrum. Nevertheless, the synthesis of ZnS quantum dots (QDs) with tunable optical properties and a reasonable photoluminescent quantum yield (PLQY) adopting a new hybrid method is highly recognized. The present study involves the simple synthesis of self-capped wurtzite ZnS QDs employing a hybrid method comprising a single-source molecular precursor (SSMP), 2-(dimethylamino)ethanethiolate of zinc(II), and γ-radiation followed by elucidation of the formation mechanism of self-capped ZnS QDs. Here, the SSMP has been γ-irradiated in a solution to yield ZnS QDs of varying size at different radiation doses. The crystal structure, elemental composition, shape and optical properties of pristine self-capped ZnS QDs were assessed by powder X-ray diffraction, energy dispersive X-ray spectroscopy, electron microscopy, UV–vis, photoluminescence and diffused reflectance spectroscopy, respectively. The size-tailored emission maximum and optical band gaps were tweaked to a tune of 417–537 nm and 4.17–4.23 eV by altering the γ-radiation dose with PLQYs realized in the range of 10–24%. Lifetimes of these samples are in the range of 1.69–2.68 and 6.82–34.88 ns for the fast- and slow-decaying components, respectively.https://royalsocietypublishing.org/doi/10.1098/rsos.250692radiationZnS QDsphotoluminescence |
| spellingShingle | Sanju Francis Nisha Kushwah Vishwanadh Bathula Kedarnath Gotluru γ-Radiation-assisted molecular template route: a new hybrid path for facile synthesis of size-dependent optical properties of ZnS quantum dots Royal Society Open Science radiation ZnS QDs photoluminescence |
| title | γ-Radiation-assisted molecular template route: a new hybrid path for facile synthesis of size-dependent optical properties of ZnS quantum dots |
| title_full | γ-Radiation-assisted molecular template route: a new hybrid path for facile synthesis of size-dependent optical properties of ZnS quantum dots |
| title_fullStr | γ-Radiation-assisted molecular template route: a new hybrid path for facile synthesis of size-dependent optical properties of ZnS quantum dots |
| title_full_unstemmed | γ-Radiation-assisted molecular template route: a new hybrid path for facile synthesis of size-dependent optical properties of ZnS quantum dots |
| title_short | γ-Radiation-assisted molecular template route: a new hybrid path for facile synthesis of size-dependent optical properties of ZnS quantum dots |
| title_sort | γ radiation assisted molecular template route a new hybrid path for facile synthesis of size dependent optical properties of zns quantum dots |
| topic | radiation ZnS QDs photoluminescence |
| url | https://royalsocietypublishing.org/doi/10.1098/rsos.250692 |
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