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- W2179399557 abstract "Abstract We present photoluminescence properties of Tb 3+ doped borosilicate glasses modified by Cu + . Around 5-time enhanced emission at 541 nm due to the superposed emission of Tb 3+ and Cu + is observed under the deep UV excitation. Excitation spectra demonstrate a greatly increased absorption of Tb 3+ ions in the deep UV region towards the Cu + excitation band, while the shortened Cu + emission lifetime of glasses in association with presence of Tb 3+ ions implies an energy transfer process from Cu + to Tb 3+ ions. Meanwhile, the Tb 3+ emission lifetime is significantly shortened from the conventional millisecond level (~4 ms) to the microsecond regime up to around 90 μs. This most likely starts with the role of Cu + as a co-activator by initiating the d-f orbital hybridization process via an interaction with Tb 3+ , thus relaxing the spin forbidden transition of Tb 3+ ions to the partially allowed one. Moreover, combination of emissions from Cu + and Tb 3+ ions generates a composite green emission with adjustable CIE (Commission Internationale de L’Eclairage) chromaticity coordinates achievable by co-doping Cu + /Tb 3+ in the different ratio and/or altering the excitation wavelength from deep UV to near UV region." @default.
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- W2179399557 date "2015-10-21" @default.
- W2179399557 modified "2023-09-27" @default.
- W2179399557 title "Fast and intense green emission of Tb3+ in borosilicate glass modified by Cu+" @default.
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- W2179399557 doi "https://doi.org/10.1038/srep15387" @default.
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