sb掺杂SnO2薄膜的表面轮廓和光学性质

2007 2nd IEEE International Conference on Nano/Micro Engineered and Molecular Systems Pub Date : 2007-04-23 DOI:10.1109/NEMS.2007.352266

S. D. Hutagalung, B.Y. Lee

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引用次数: 3

摘要

采用溶胶-凝胶浸涂技术在载玻片衬底上制备了氧化锡(SnO2)和掺锑氧化锡(SnO2:Sb)薄膜。用五水氯化锡、氯化锑、尿素和盐酸配制前驱体溶液。Sb掺杂浓度在1 ~ 4 mol%范围内变化，考察掺杂对薄膜光学性能和表面粗糙度的影响。AFM图像显示，未掺杂的薄膜表面形貌非常光滑，纳米结构晶粒尺寸在37.6 ~ 56.3 nm之间。同时，与未掺杂的SnO2相比，sb掺杂的SnO2粗糙度更大。从紫外-可见光透射光谱研究了薄膜的光学性能。sn掺杂SnO2薄膜的能隙在4.07-4.11 eV之间，随着掺杂浓度的增加，能隙逐渐减小。

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Surface Profile and Optical Properties of Sb-doped SnO2 Thin Films

Tin oxide (SnO2) and antimony-doped tin oxide (SnO2:Sb) thin films were deposited on the microscope slide glass substrates by sol-gel dip coating technique. Precursor solution was prepared using tin(IV) chloride pentahydrate, antimony chloride, urea, and hydrochloric acid. The Sb dopant concentration was varied from 1 to 4 mol% to investigate the effect of doping on the optical and surface roughness of the films. AFM image showed that undoped films having a very smooth surface morphology with nanostructure grain size in the range of 37.6 to 56.3 nm. Meanwhile, Sb-doped SnO2 was more roughness if compared to undoped one. The optical properties of the films have been studied from transmission spectra in the ultraviolet-visible wavelength range. Energy gap of Sb-doped SnO2 thin films are in the range of 4.07-4.11 eV, shifted to the lower value with increased doping concentration.

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2007 2nd IEEE International Conference on Nano/Micro Engineered and Molecular Systems

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