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首页> 外文期刊>Journal of Applied Physics >Photoluminescence of Tb~(3+) doped SiN_x films grown by plasma-enhanced chemical vapor deposition
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Photoluminescence of Tb~(3+) doped SiN_x films grown by plasma-enhanced chemical vapor deposition

机译:通过等离子体增强化学气相沉积法生长的Tb〜(3+)掺杂SiN_x薄膜的光致发光

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摘要

Room temperature photoluminescence (PL) properties of the Tb~(3+) ion implanted nonstoichiometric silicon nitride (Tb~(3+): SiN_x) and silicon dioxide (Tb~(3+): SiO_x) were studied. The films were deposited by plasma-enhanced chemical vapor deposition and then annealed at different temperatures for 1 h in flowing N_2 before or after the implantation. Results show that there are four intense PL peaks due to the intra-4f transitions of Tb~(3+) in the wavelength from 470 to 625 nm for both kinds of films. Moreover, after postannealing at 1000℃, the integrated PL intensity of Tb~(3+): SiN_x is much higher than that of Tb~(3+): SiO_x. The energy transfer from the defect related energy levels to the Tb~(3+) ions will enhance the ~5D_4→~7F_k (k=3-6) luminescence of Tb~(3+) ions.
机译:研究了Tb〜(3+)离子注入的非化学计量氮化硅(Tb〜(3+):SiN_x)和二氧化硅(Tb〜(3+):SiO_x)的室温光致发光(PL)特性。通过等离子体增强化学气相沉积来沉积膜,然后在注入之前或之后在流动的N_2中在不同温度下退火1小时。结果表明,由于两种薄膜的Tb〜(3+)的4f内跃迁在470-625 nm波长范围内均存在四个强烈的PL峰。此外,在1000℃下进行后退火后,Tb〜(3 +):SiN_x的积分PL强度远高于Tb〜(3 +):SiO_x。从缺陷相关能级到Tb〜(3+)离子的能量转移将增强Tb〜(3+)离子的〜5D_4→〜7F_k(k = 3-6)发光。

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