Journal
JOURNAL OF PHYSICAL CHEMISTRY A
Volume 114, Issue 26, Pages 6927-6934Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jp101772z
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Funding
- MEST [2009-0078682]
- National Research Foundation of Korea [2009-0078682] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Concentration dependence of Mn2+ luminescence in NaCaPO4/Mn2+ is investigated by structural analyses and optical and laser excitation spectroscopies in the temperature range 19-300 K. NaCaPO4/Mn2+ forms solid solution over the Mn2+ concentration range 1.0-22 mol %. We observe the red shift and unusual band narrowing of Mn2+ emission by increasing Mn2+ concentration in NaCaPO4. The lifetime of Mn2+ emission lengthens unexpectedly for higher Mn2+ concentration. The results are discussed in relation with crystal structure, photon reabsorption, exchange interaction, and energy transfer and energy migration in NaCaPO4/Mn2+ .
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