title: Energy transfer and visible-infrared quantum cutting photoluminescence modification in Tm-Yb codoped YPO(4) inverse opal photonic crystals.
abstract: YPO4:  Tm, Yb inverse opal photonic crystals were successfully synthesized by the colloidal crystal templates method, and the visible-infrared quantum cutting (QC) photoluminescence properties of YPO4:  Tm, Yb inverse opal photonic crystals were investigated. We obtained tetragonal phase YPO4in all the samples when the samples sintered at 950°C for 5 h. The visible emission intensity of Tm3+decreased significantly when the photonic bandgap was located at 650 nm under 480 nm excitation. On the contrary, the QC emission intensity of Yb3+was enhanced as compared with the no photonic bandgap sample. When the photonic bandgap was located at 480 nm, the Yb3+and Tm3+light-emitting intensity weakened at the same time. We demonstrated that the energy transfer between Tm3+and Yb3+is enhanced by the suppression of the red emission of Tm3+. Additionally, the mechanisms for the influence of the photonic bandgap on the energy transfer process of the Tm3+, Yb3+codoped YPO4inverse opal are discussed.
authors.forename: Siqin
authors.initials: S
authors.lastname: Wang
authors.forename: Jianbei
authors.initials: J
authors.lastname: Qiu
authors.forename: Qi
authors.initials: Q
authors.lastname: Wang
authors.forename: Dacheng
authors.initials: D
authors.lastname: Zhou
authors.forename: Zhengwen
authors.initials: Z
authors.lastname: Yang