Author/Authors :
Yang، نويسنده , , Zhengwen and Zhou، نويسنده , , Ji and Huang، نويسنده , , Xueguang and Yang، نويسنده , , Gang and Xie، نويسنده , , Qin and Sun، نويسنده , , Li and Li، نويسنده , , Bo and Li، نويسنده , , Longtu، نويسنده ,
Abstract :
Inverse opal photonic crystals of Tb3+ doped LaPO4 (LaPO4:Tb) were prepared by the self-assembly technique in combination with a sol–gel method. Photoluminescence (PL) of the inverse opals was investigated. The effect of the photonic stop-band on the spontaneous emission of the 5D4→7Fn transitions of Tb3+ has been observed in the inverse opals of the Tb3+ doped LaPO4. Significant suppression of the emission was detected if the photonic band gap overlaps with the Tb3+ ions emission band, while enhancement of the emission occurs if the emission band appears at the edge of the band gap.
