title: Photostimulated luminescence properties of Eu2+ -doped barium aluminate phosphor.
abstract: An intense green photostimulated luminescence in BaAl2 O4 :Eu(2+) phosphor was prepared. The thermoluminescence results indicate that there are at least three types of traps (T1 , T2 , T3 ) with different trap depths in BaAl2 O4 :Eu(2+) phosphor according to the bands located at 327, 361 and 555 K, respectively, which are closely associated with the phosphor's long persistent luminescence and photostimulated luminescence properties. In addition, as a novel optical read-out form, a photostimulated persistent luminescence signal can be repeatedly obtained in BaAl2 O4 :Eu(2+) phosphor. This shows that re-trapping of the electron released from a deep trap plays an important role in photostimulated persistent luminescence.
authors: College of Materials Science and Engineering, Kunming University of Science and Technology, Kunming, 650093, People's Republic of China.
authors: Quanlong
authors: Q
authors: He
authors: Guangyu
authors: G
authors: Qiu
authors: Xuhui
authors: X
authors: Xu
authors: Jianbei
authors: J
authors: Qiu
authors: Xue
authors: X
authors: Yu
mesh_terms: D000537:Aluminum Oxide / Q000737:chemistry*; D001464:Barium / Q000737:chemistry*; D005063:Europium / Q000737:chemistry*; D049449:Luminescence; D049408:Luminescent Agents / Q000138:chemical synthesis / Q000737:chemistry*; D008163:Luminescent Measurements; D055668:Photochemical Processes
chemical_list: D049408:Luminescent Agents; D001464:Barium; D005063:Europium; D000537:Aluminum Oxide
keywords: photostimulated; re-trapping process; thermoluminescence