Enhanced and shortened Mn

Qiaosong Cai, Fanliang Zhou, Ning Yang, Haiyuan Xu, Stefania Baccaro, Alessia Cemmi, Mauro Falconieri, Guorong Chen

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Abstract

A novel pair of transition metal ions Cu+, Mn2+is co-doped in borosilicate glasses. Both copper and manganese ions exist in lower valence states (Cusu, Mn2+) in the as-prepared glasses. Around 5-time enhanced Mn2+emission under the UV excitation is observed, which, as demonstrated by excitation spectra and emission decay curves, is due to an energy transfer from Cu+ions resulting in greatly increased absorption of Mn2+ions in the UV region, and relaxation on doubly-forbidden transition of Mn2+leading to the much shortened Mn2+emission lifetime from millisecond to microsecond level. Besides, a composite white emission is generated by combining the blue-green part from Cu+ions with the green-red part from Mn2+ions and it can be effectively tuned from cold to warm by adjusting host glass composition and altering excitation wavelength. Relevant mechanisms are discussed.
Original languageEnglish
Pages (from-to)51 - 58
Number of pages8
JournalOptical Materials Express
Volume5
Issue number1
DOIs
Publication statusPublished - 2015
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials

Cite this

Cai, Q., Zhou, F., Yang, N., Xu, H., Baccaro, S., Cemmi, A., ... Chen, G. (2015). Enhanced and shortened Mn. Optical Materials Express, 5(1), 51 - 58. https://doi.org/10.1364/OME.5.000051