The nature of blue luminescence from natural benitoite BaTiSi3O9
The nature of blue luminescence from natural benitoite BaTiSi3O9
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DOI：
10.1007/s00269-004-0407-x
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发表时间：
2004-07
影响因子：
1.4
通讯作者：
M. Gaft;L. Nagli;G. Waychunas;D. Weiss
中科院分区：
文献类型：
--
作者：
M. Gaft;L. Nagli;G. Waychunas;D. Weiss
证明了钠长石的蓝色发光与其内禀发光中心，即孤立的TiO_6八面体有关。亚稳能级3T1u是在低温下具有1.1 ms的长衰变时间的发射能级。在较高温度下，具有较高辐射概率的能级必须参与发射过程，并且该能级位于比最低能级高0.06 eV处。这两个能级可以用3T1u能级分裂或紧密间隔的3T1u和3T2u能级连接。衰减时间缩短和热猝灭与非辐射衰减内的TiO 6发光中心，而能量迁移不发生至少在室温下。
It is proved that blue luminescence from benitoite is connected with intrinsic luminescence centers, namely isolated TiO6octahedra. The metastable level3T1uis the emitting level at low temperatures with a long decay time of 1.1 ms. At higher temperatures an energy level with higher radiation probability must be involved in the emission process, and this level is situated at 0.06 eV higher than the lowest level. These two levels may be connected with3T1ulevel splitting or with closely spaced3T1uand3T2ulevels. Decay time shortening and thermal quenching are connected with nonradiative decay within the TiO6luminescence center, while energy migration does not take place at least up to room temperature.