本文采用V2O5粉和MoO3粉为原料,通过无机溶胶-凝胶法制备掺Mo6+的VO2薄膜.实验采用XRD和XPS等研究手段,对掺杂薄膜的物相组成、价态、相变温度、电阻突变量级和相变前后的光透过率进行了测试.结果发现:所制备的掺杂薄膜其主要成份是VO2,掺入的MoO3结构未发生改变,掺杂薄膜随MoO3含量的增加其相变温度明显下降,但其电阻突变量级和光透过率的突变量亦随之降低,其中,电阻突变量级的下降趋势更显著,不过只要MoO3掺杂量不高于5%时,掺杂薄膜的电阻突变仍可保持2个量级以上,而且红外光透过率的突变量仍保持较高.分析认为,薄膜中掺入的MoO3与VO2可以互溶,从而可作为施主组元降低VO2能带结构中的禁带宽度,改变其光电特性.
参考文献
[1] | 崔敬忠,达道安,姜万顺.VO2热致变色薄膜的结构和光电特性研究[J].物理学报,1998(03):454-460. |
[2] | Mark A Richardson .Infrared Optical Modulators Testing[J].Optics & Laser Technology,1998,32(02):137. |
[3] | Wu Z P .Molybdenum Substitutional Doping and Its Effects on Phase Transition Properties in Single Crystalline Vanadium Dioxide Thin Film[J].Journal of Physics D:Applied Physics,1999,86(09):5311. |
[4] | 卢勇,林理彬,邹萍,何捷,王鹏.价态和结构对VO2薄膜热致相变光电性能的影响[J].人工晶体学报,2001(02):185-191. |
[5] | Burhard W;Christmann T;Meyer B K .W-and F-doped VO2 Films Studied by Photoelectron Spectrometry[J].Thin Solid Films,1999,345:229. |
[6] | Jin P;Tazawa M;Keyama M et al.Growth and Characterization of Epitaxial Films of Tungsten-doped Vanadium Dioxide on Sapphire (110) by Reactive Magnetron Sputtering[J].American Vacuum Society,1999,17(04):1817. |
[7] | Yin Dachuan;Xu Niankan;Zhang Jingyu et al.High Quality Vanadium Dioxide Films Prepared by an Inorganic sol-gel Method[J].Materials Research Bulletin,1996,34(02):335. |
[8] | Lu Songwei;Hou Lisong;Gan Fuxi .Preparation and Optical Properties of Phase-change VO2 Thin Films[J].Journal of Materials Science,1993,28(08):2169. |
[9] | 苏勉曾.固体化学[M].北京:北京大学出版社,1987:113. |
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