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A series of Yb~(3+)/Er~(3+) or Er~(3+) doped SrIn_2O_4 were synthesized by a high temperature solid state method.The up-conversion luminescence property and the phase formation of SrIn_2O_4:Er~(3+) and SrIn_2O_4:Yb~(3+),Er~(3+) were investigated by X-ray diffraction(XRD) and spectral methods.The XRD pattern shows that incorporating different amounts of Yb~(3+)and Er~(3+) have no influence on the phase formation of SrIn_2O_4.The up-conversion luminescence spectrum of SrIn_2O_4:Er~(3+) presented a weak luminescence due to ground state absorption of Er~(3+).However,Yb~(3+)/Er~(3+) codoped SrIn_2O_4 depicted the green(525 and 551 run) and red(662 nm) up-conversion luminescence which were assigned to the energy transfer from the Yb~(3+) transition ~2F_(7/2)-~2F_(5/2) to the Er~(3+) transitions ~2H_(11/2)-~4I_(15/2) and ~4F_(9/2-~4I_(15/2),respectively.The possible up-conversion luminescence mechanism of SrIn_2O_4:Yb~(3+),Er~(3+) was analyzed.All results could be helpful to the development of up-conversion luminescence materials.
A series of Yb ~ (3 +) / Er ~ (3+) or Er ~ (3+) doped SrIn_2O_4 were synthesized by a high temperature solid state method. The up-conversion luminescence property and the phase formation of SrIn_2O_4: Er ~ (3+) and SrIn_2O_4: Yb ~ (3 +), Er ~ (3+) were investigated by X-ray diffraction (XRD) and spectral methods. XRD pattern shows that incorporating different amounts of Yb ~ (3+) and Er ~ (3+) has no influence on the phase formation of SrIn_2O_4. The up-conversion luminescence spectrum of SrIn_2O_4: Er ~ (3+) presents a weak luminescence due to ground state absorption of Er ~ (3 + Yb ~ (3 +) / Er ~ (3+) codoped Srln_2O_4 depicted the green (525 and 551 run) and red (662 nm) up-conversion luminescence which were assigned to the energy transfer from the Yb ~ (3+) transition ~ 2F_ (7/2) - ~ 2F_ (5/2) to the Er ~ (3+) transitions ~ 2H_ (11/2) ~ ~ 4I_ (15/2) and ~ 4F_ (9/2 - ~ 4I_ 15/2), respectively.The possible up-conversion luminescence mechanism of SrIn2O4: Yb ~ (3 +), Er ~ (3+) was analyzed. All results could be helpful to the development o f up-conversion luminescence materials.