Ultraviolet to near-infrared downconvers
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Ru Zhou; Xiantao Wei; Yonghu Chen; Changkui Duan; Min Yin
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Article
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2011
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John Wiley and Sons
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English
β 482 KB
## Abstract Efficient blueβgreen emission is observed for Sr~2~CeO~4~ under ultraviolet excitation ranging from 250 to 400βnm and this is ascribed to the emission of the O^2β^βCe^4+^ charge transfer (CT) states. Under the excitation of ultraviolet light in the broad absorption band, an intense near