点击次数：

论文类型：期刊论文

发表时间：2015-11-11

发表刊物：JOURNAL OF MODERN OPTICS

收录刊物：SCIE、EI、Scopus

卷号：62

期号：19

页面范围：1638-1642

ISSN号：0950-0340

关键字：Dy3+; Yb3+ ions; oxyfluoride glass ceramics; indirect sensitization; white light emission

摘要：Dy3+-doped and Dy3+:Yb3+-codoped oxyfluoride glass ceramics have been prepared by high-temperature solid phase sintering method. The micrographs of scanning electron microscope show that a lot of nanorods are formed on the surface of Dy3+:Yb3+-codoped sample. The excitation spectra and emission spectra are measured, respectively, and intense photoluminescence peaks at 482 and 575nm corresponding to the transitions of Dy3+ ions are found in single-doped samples under 388-nm excitation. For Dy3+:Yb3+-codoped oxyfluoride glass ceramics, the intensities at blue and green bands become weaker whereas the intensity at 695nm gets stronger. The indirect sensitization is detailedly discussed and Commission Internationale de lE-clairage chromaticity coordinates exhibit that two kinds of oxyfluoride glass ceramics are available candidates for the solid-state white light emission.