Phase transformation and photoluminescence properties of Er silicate films by sol-gel method
Phase transformation and photoluminescence properties of Er silicate films by sol-gel method
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溶胶-凝胶法研究硅酸铒薄膜的相变及光致发光特性
DOI：
10.7498/aps.59.3554
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发表时间：
2010-05
期刊：
影响因子：
--
通讯作者：
Zhou, Zhiping
中科院分区：
文献类型：
--
作者：
Wang, Xingjun;Dong, Bin;Zhou, Zhiping
The Er 2 SiO 5 films with strong room-temperature photoluminescence have been fabricated by using the sol-gel spin coating method. The effects of sintering temperature and time on phase structure and phase transformation of ErSiO films have been investigated. A mixture of Er 2 O 3 crystal and amorphous SiO 2 was obtained below 1000 ℃, and the Er 2 SiO 5 phase with high (100), (200), and (300) preferred orientation was detected when the temperature increased to higher than 1200 ℃. The phase structure has an evident influence on the photoluminescence properties for ErSiO films. For the phase structure of Er 2 O 3 crystal with amorphous SiO 2 , the weak PL spectra with a main peak at λ =1.535 μm were observed. The strongest main PL peak moved to λ =1.528 μm, and the intensity was increased about 10—20 times when the phase structure changed to Er 2 SiO 5 . The Er 2 SiO 5 films with strong room temperature photoluminescence are promising candidates for application in Si-based light source and amplifier.
