Fabrication of luminescent SrWO4 thin films by a novel electrochemical method
Fabrication of luminescent SrWO4 thin films by a novel electrochemical method
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DOI：
10.1016/j.materresbull.2006.12.002
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发表时间：
2007-10
影响因子：
5.4
通讯作者：
Lian-ping Chen;Yuanhong Gao
中科院分区：
文献类型：
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作者：
Lian-ping Chen;Yuanhong Gao
采用电池电化学方法，在60min内制备了具有单一白钨矿结构的高结晶srwo4薄膜。x射线衍射分析表明，srwo4薄膜具有四方结构。扫描电镜检查显示，在电解电化学条件下，srwo4晶粒生长良好，呈四边形锥形，而通常采用电解电化学方法形成的花或束状晶粒在电池电化学条件下消失。x射线光电子能谱和能量色散x射线微分析测试表明，薄膜的组成与其化学计量相一致。这些srwo4薄膜在230nm激发波下显示出单一的蓝色发射峰（位于460nm处）。电池电化学方法的速度可以通过改变温度来控制。最佳处理温度约为50-60℃。
Highly crystallized SrWO4thin films with single scheelite structure were prepared within 60min by a cell electrochemical method. X-ray diffraction analysis shows that SrWO4thin films have a tetragonal structure. Scanning electron microscopy examinations reveal that SrWO4grains grow well in tetragonal tapers and grains like flowers or bunches, which can usually form by using the electrolysis electrochemical method, have disappeared under cell electrochemical conditions. X-ray photoelectron spectra and energy dispersive X-ray microanalysis examinations demonstrate that the composition of the film is consistent with its stoichiometry. These SrWO4films show a single blue emission peak (located at 460nm) using an excitation wave of 230nm. The speed of cell electrochemical method can be controlled by changing temperature. The optimum treatment temperature is about 50–60°C.