Hedgehog ZnO/Ag heterostructure: an environment-friendly rare earth free potential material for cold-white light emission with high quantum yield
IR@CGCRI: CSIR-Central Glass and Ceramic Research Institute, Kolkata
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| Title |
Hedgehog ZnO/Ag heterostructure: an environment-friendly rare earth free potential material for cold-white light emission with high quantum yield
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| Creator |
Bhattacharyya, Puja
Bhattacharjee, Swarupananda Bar, Manoranjan Ghorai, Uttam Kumar Pal, Mrinal Baitalik, Sujoy Ghosh, Chandan Kr |
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| Subject |
Processing Science
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| Description |
Solid-state white light emission from environment-friendly, highly stable hedgehog ZnO/Ag heterostructure has been observed for first time from a combined effect of tunability of emission centers and charge transfer. The heterostructure has been synthesized via a facile low-temperature hydrothermal route and characterized using X-ray diffractometer, scanning electron microscope and transmission electron microscope. The interaction between ZnO and Ag can be confirmed from the appearance of few new multi-phonon Raman peaks. Steady-state photoluminescence spectrum reveals multiple emissions (413, 453, 546, 605 and 667 nm) from virgin hedgehog ZnO at an excitation wavelength of 325 nm. Tuneability of radiative and non-radiative emission of ZnO which is the primary mechanism for white light emission (CIE coordinate: 0.35, 0.32) has been briefly investigated by time-correlated single-photon spectroscopy. Biocompatible as well cost-effectivity depicts that the as-prepared heterostructure would be a promising solid-state white light-emitting phosphor material for long-term use.
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| Publisher |
Springer
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| Date |
2018-11
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| Type |
Article
PeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://cgcri.csircentral.net/4513/1/mrinal.pdf
Bhattacharyya, Puja and Bhattacharjee, Swarupananda and Bar, Manoranjan and Ghorai, Uttam Kumar and Pal, Mrinal and Baitalik, Sujoy and Ghosh, Chandan Kr (2018) Hedgehog ZnO/Ag heterostructure: an environment-friendly rare earth free potential material for cold-white light emission with high quantum yield. Applied Physics A-Materials Science & Processing, 124 (11). Art No.-782. ISSN 0947-8396 |
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| Relation |
http://cgcri.csircentral.net/4513/
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