Preparation, characterization and optical properties of tin monoxide micro-nano structure via hydrothermal synthesis
Preparation, characterization and optical properties of tin monoxide micro-nano structure via hydrothermal synthesis
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DOI：
10.1016/j.matlet.2011.11.023
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发表时间：
2012-02
影响因子：
3
通讯作者：
M. Iqbal;Fengping Wang;Rafi-ud-din;Qurat-ul-ain Javed;M. Rafique;Yan Li;Pengfei Li
中科院分区：
文献类型：
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作者：
M. Iqbal;Fengping Wang;Rafi-ud-din;Qurat-ul-ain Javed;M. Rafique;Yan Li;Pengfei Li
采用无模板水热生长法制备了具有纳米矩形带的新型斜酸亚锡（SnO）。采用x射线衍射（XRD）、场发射扫描电镜（FESEM）和能量色散x射线能谱（EDS）对其晶相、形貌和粒径进行了表征。FESEM结果表明，斜晶状SnO结构在10~12微米范围内，纳米矩形带的平均尺寸约为80nm~110nm。计算得到四相SnO颗粒的平均晶粒尺寸约为29nm。详细讨论了水热反应温度对其生长机理的影响。结果表明，反应温度对产物的形貌和粒度有较大的影响。此外，采用紫外-可见-近红外（UV-vis-NIR）分光光度法测定了SnO结构的透光性能。利用Davis-Mott模型获得了3.12eV的直接光学带隙。此外，光致发光（PL）性能在397nm处显示出很强的发射峰，表明其具有led应用的潜力。
The novel stannous oxide (SnO) clinopinacoid types with nano-rectangle strips were successfully synthesized by using the template-free hydrothermal growth method. The crystalline phase, morphology, and particle sizes had been characterized by X-ray diffraction (XRD), field-emission scanning electron microscopy (FESEM), and energy-dispersive X-ray spectroscopy (EDS). FESEM results had showed that the clinopinacoid-like SnO structure was in the range of 10~12 micrometers and the average size of nano-rectangle strip was about 80nm~110nm. The average crystalline size of the tetragonal phase SnO particles was calculated to be about 29nm. The growth mechanism and the influence of hydrothermal reaction temperature were discussed in detail. The results had indicated that the reaction temperature exhibited a strong influence on the morphology as well as on the particle size of the resulting product. Furthermore, ultraviolet–visible–near infrared (UV–vis–NIR) spectrophotometry had been employed to determine the optical transmittance behavior of SnO structures. The direct optical band gap of 3.12eV was acquired by using the Davis–Mott model. Moreover, the photoluminescence (PL) properties had showed a strong emission peak at 397nm indicating its potential for LEDs applications.