摘要
研究了掺Er^(3+)含Au纳米颗粒铋酸盐玻璃在波长为980nm的LD抽运下1.53μm波长处的发光特性。测试得到表征Au纳米颗粒存在的表面等离子体共振(SPR)峰位于565~586nm波长之间,透射电镜(TEM)图像中观察到密集分布形状各异的Au纳米颗粒,尺寸约为5~16nm。研究表明,随着AuCl含量增加,1.53μm波长处荧光强度呈现先增强后减弱的趋势,在AuCl掺杂浓度为0.2wt%时取得最大值,为未掺杂时的4.3倍;荧光增强原因归结于Au纳米颗粒SPR引起的局域场增强以及Au0→Er^(3+)的能量转移,荧光淬灭原因归结于Er^(3+)→Au0的能量反向转移。
The characteristics of 1.53 μm emission for the Er3＋ doped bismuthate glasses containing Au nanoparticles （NPs） were studied under 980 nm excitation. The absorption spectra show typical surface plasmon resonance （SPR） peak of Au NPs appearing from 565 ns to 586 nm. Transmission electron mi- croscopic （TEM） image reveals densely inhabited Au NIPs with different shapes and the size from 5 nm to 16 nm. The experimental results indicate that 1.53 μm emission intensity obviously enhances with the addition of AuCl,and reaches a maximum value in the glass containing 0.2 wt% AuC1, which is 4. 3 times higher than that of glass without Au NPs,and then the emission intensity decreases with the fur- ther increase of AuC1 concentration. The enhancement of 1.53μm emission is attributed to the enhanced local field induced by Au SPR and energy transfer from Au_0 to Er3＋ , while emission quenching results from the energy transfer from Er3＋ to Au_0.
出处
《光电子．激光》
EI
CAS
CSCD
北大核心
2017年第6期625-629,共5页
Journal of Optoelectronics·Laser
基金
国家自然科学基金项目(61178063)资助项目
