Tuning of the blue emission from europium-doped alkaline earth chloroborate thin films activated in air
Tuning of the blue emission from europium-doped alkaline earth chloroborate thin films activated in air
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DOI：
10.1063/1.1569048
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发表时间：
2003-04-28
影响因子：
4
通讯作者：
Cocivera, M
中科院分区：
文献类型：
--
作者：
Hao, JH;Gao, J;Cocivera, M
采用喷雾热分解法在玻璃基片上制备了M2 B5 O 9 Cl：Eu（M=Ca、Sr、Ba）薄膜。通过在空气中退火获得了由于Eu ~（3+）→ Eu ~（2+）的异常还原而产生的蓝色阴极发光。发现基质晶格的阳离子影响还原过程的有效性，这可能导致影响发射带。通过选择碱性阳离子的类型和组成，可以在435至465 nm之间调节主发射波长。膜的活化发生在适合于使用玻璃基板的温度下。(C)2003年，美国物理学会。
Thin films of M2B5O9Cl:Eu (M=Ca, Sr, Ba) were prepared on glass substrates using spray pyrolysis. Blue cathodoluminescence due to the abnormal reduction of Eu3+-->Eu2+ was obtained by annealing films in air. The cation of the host lattice was found to affect the effectiveness of the reduction process, which could result in influencing the emission band. By selecting types and composition of alkaline cation, it was possible to tune the dominant emitting wavelength between 435 to 465 nm. Activation of the films occurred at temperatures suitable for the use of glass substrates. (C) 2003 American Institute of Physics.