Dynamic colour and utilizable white fluorescence from Eu/Tb ions codoped lithium-yttrium-aluminium-silicate glasses
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
Author(s)
Related Research Unit(s)
Detail(s)
Original language | English |
---|---|
Article number | 115301 |
Journal / Publication | Journal of Physics D: Applied Physics |
Volume | 45 |
Issue number | 11 |
Publication status | Published - 21 Mar 2012 |
Link(s)
Abstract
A group of dynamic-colour white fluorescences with various colour temperatures that can be applied to circadian lighting are achieved in Eu/Tb-codoped lithium-yttrium-aluminium-silicate (LYAS) glasses, which can be attributed to the simultaneous generation of three primary colours emitting from Eu 3+ (red), Eu 2+ (blue) and Tb 3+ (green) by varying the ultraviolet (UV) radiation wavelength. Fluorescence colour coordinates pass through the whole white region of the CIE x, y chromaticity diagram when the UV excitation wavelength is increased from 300 to 370nm. A favourable white light with colour coordinates (0.338, 0.298) close to the equal energy white is obtained under 360nm excitation. These results indicate that the Eu/Tb-codoped LYAS glasses are a promising candidate to develop white lighting devices under the excitation of commercial UV light-emitting diodes, and a smart lighting system based on rare-earth doped glasses will be a potential illumination source offering controllability of the colour temperature that can adjust to specific environments and requirements, and benefit human health, well-being and productivity. © 2012 IOP Publishing Ltd.
Citation Format(s)
Dynamic colour and utilizable white fluorescence from Eu/Tb ions codoped lithium-yttrium-aluminium-silicate glasses. / Shen, Lifan; Liu, Xiao; Chen, Baojie et al.
In: Journal of Physics D: Applied Physics, Vol. 45, No. 11, 115301, 21.03.2012.
In: Journal of Physics D: Applied Physics, Vol. 45, No. 11, 115301, 21.03.2012.
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review