Liu Chunxu, Liu Junye, Li Dan, Xu Wu, Dou Kai, Yu Jiaqi. STUDY ON THE TRANSIENT BEHAVIORS OF ZnS:Mn<sup>2+</sup>NANOCRYSTALLITES DISPERSED IN PYREX GLASSES[J]. Chinese Journal of Luminescence, 1999,20(2): 106-108
Liu Chunxu, Liu Junye, Li Dan, Xu Wu, Dou Kai, Yu Jiaqi. STUDY ON THE TRANSIENT BEHAVIORS OF ZnS:Mn<sup>2+</sup>NANOCRYSTALLITES DISPERSED IN PYREX GLASSES[J]. Chinese Journal of Luminescence, 1999,20(2): 106-108DOI:
nanocrystallites dispersed in Pyrex glasses were studied by emission
excitation
time resolved spectra and luminescence decays. It was found that blue emissions peaked at 389 and 404nm are not self activated luminescence due to D A pairs but the emission from Mn
2+
located at the intersticial sites. This is in good agreement with the results of the previous EPR experiments. There are no energy transfers between this emission and Mn
2+
ions. The lifetimes of
4
T
1
6
A
1
transition to Mn
2+
ions were shortened compared with that of ZnS:Mn
2+
bulk powder. It is suggested that the ratio of the energy transfer from ZnS to Mn
2+
ions gets faster by quantum confinements and efficient radiationless channels provided by surface states.
关键词
纳米复合体荧光寿命时间相关单光子计数
Keywords
nanocopositesluminescence lifetimetime correlated single photon counting technology