arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1802.02886cond-mat.mtrl-sci
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旋涂Zn掺杂氧化铜薄膜的表征

Characterization of spin coated Zn doped cupric oxide thin films

P. Samarasekara, P. G. D. C. K. Karunarathna, H. P. Weeramuni, C. A. N. Fernando

摘要:

以Cu和Zn为原料,采用旋涂法制备了Zn 2+掺杂的氧化铜(CuO)薄膜。改变旋涂的速度和持续时间以制造具有所需均匀厚度的膜。随后在空气中在不同的退火温度下对样品进行退火以使CuO相结晶。Zn 2+的掺杂浓度变化至10%的重量百分比。利用X射线衍射技术测定了样品的结构性质。利用XRD图谱测定了不同掺杂浓度下的颗粒尺寸、位错密度和应变。用紫外可见分光光度计测定了其光学性质。通过掺杂微量的Zn ~(2+)可以对CuO的光学带隙进行调控。光学带隙随颗粒尺寸的增大而减小。颗粒尺寸、位错密度、应变和光学带隙在掺杂浓度为6%附近有一个转折点。

英文摘要:

Thin films of Zn2+ doped cupric oxide (CuO) were synthesized using spin coating technique starting from a solution with Cu and Zn. The speed of spin coating and time duration were varied to fabricate a film with required uniform thickness. Samples were subsequently annealed in air at different annealing temperatures to crystallize the phase of CuO. Doping concentration of Zn2+ was varied up to weight percentage of 10%. Structural properties of samples were determined using X-ray diffraction technique. Particle size, dislocation density and strain at different doping concentrations were determined using XRD patterns. Optical properties were measured by means of UV/Vis spectrometer. Optical band gap of CuO could be tailored by doping a trace amount of Zn2+. The optical band gap decreases with increase of particle size. The particle size, dislocation density, strain and optical band gap have a turning point close to the doping concentration of 6%.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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