Infrared-to-visible upconversion luminescence of Er3+ doped barium-natrium-yttrium-fluoride phosphor

Publication year: 2011
Source: Journal of Luminescence, In Press, Accepted Manuscript, Available online 13 June 2011

Liping, Lu , Xiyan, Zhang , Zhaohui, Bai , Xiaochun, Wang

Infrared-to-visible upconversion luminescence has been investigated in Er3+-doped barium-natrium-yttrium-fluoride phosphor (BaxNayYzF2x+y+3z+3m:Erm) with different cation concentrations. Intense upconversion emissions around 530, 550 and 660nm corresponding to the 2H11/2, 4S3/2, and 4F9/2 transitions to the 4I15/2 ground state were observed when excited by CW laser radiation at 1550nm. We adopted the Low-temperature Combustion Synthesis (LCS) method to decrease the phosphor particle size to 40–70nm in order to couple to the photosensitive surface of CCD. The effect of the amount of carbamide on the particle size and upconversion luminescence intensity was analyzed. The upconversion luminescence mechanism was discussed by the log-log plot of…

 Highlights: ► A kind of fluoride upconversion phosphor was synthesized by the LCS method. ► The phosphor synthesized by the LCS method is with the particle size of 40-70nm. ► This phosphor can be used in the phosphor-coated CCD sensitive to ~1.5μm.