Controllable synthesis of CdS nanowire by a facile solvothermal method and its temperature dependent photoluminescent property
Controllable synthesis of CdS nanowire by a facile solvothermal method and its temperature dependent photoluminescent property
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简易溶剂热法可控合成 CdS 纳米线及其温度依赖性光致发光特性
DOI：
10.1016/j.jallcom.2015.11.030
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发表时间：
2016-02
影响因子：
6.2
通讯作者：
Linjun Wang
中科院分区：
文献类型：
--
作者：
Bing Ren;Meng Cao;Qing Zhang;Jian Huang;Zhi Zhao;Xiang Jin;Chao Li;Yue Shen;Linjun Wang
采用溶剂热法合成了尺寸、取向和形貌可控的CdS纳米线。CdS纳米线的形成机制可分为短周期的固-固转变过程和长周期的熟化过程。在10 K时，CdS纳米线的PL谱中观察到了近带发射，没有明显的分裂现象。基于Varshni经验方程的最佳拟合结果支持我们的外汇分配。用两步猝灭模型分析了FX的积分峰强度和线宽随温度的变化，并与Toyozawa理论进行了很好的拟合。所有拟合结果包括热激活能，LO声子能量接近所观察到的块状CdS，表明高质量的纳米材料，但也揭示了其在光子学中的应用前景。
CdS nanowires with controllable size, orientation, and morphology were synthesized on a large scale by a solvothermal method. The mechanism for the formation of CdS nanowires evolved from CdS spherical particles can be divided into a short-period solid–solid transformation process and a long-period ripening process. Near-band-emission without distinct split phenomenon was observed in the PL spectrum of CdS nanowires at 10 K. The best fit results based on Varshni empirical equation support our assignment of FX. Temperature dependent integrated peak intensity and linewidth of FX were analyzed by means of a two-step quenching process model and well fitted by Toyozawa's theory. All fitted results including thermal activation energy, LO-phonon energy were close to that observed in bulk CdS, indicating high quality of nanomaterial but also revealing its promising applications in photonics.
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影响因子：
1.2
作者：
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通讯作者：
A. Manoogian;J. Woolley
影响因子：
3
作者：
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4.6
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影响因子：
10.8
作者：
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通讯作者：
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影响因子：
8.6
作者：
Tetyana I Levchenko;C. Kübel;Di Wang;Bahareh Khalili Najafabadi;Yining Huang;J. Corrigan
通讯作者：
Tetyana I Levchenko;C. Kübel;Di Wang;Bahareh Khalili Najafabadi;Yining Huang;J. Corrigan