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首页> 外文期刊>Journal of Physics, D. Applied Physics: A Europhysics Journal >Synthesis of electrochromic vanadium oxide by pulsed spray pyrolysis technique and its properties
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Synthesis of electrochromic vanadium oxide by pulsed spray pyrolysis technique and its properties

机译：脉冲喷雾热解法合成电致变色钒氧化物及其性能

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摘要

A new improved pulsed spray pyrolysis technique (PSPT) was employed to deposit a vanadium oxide (V2O5) thin film from a methanolic vanadium chloride precursor onto glass and conducting F:SnO2 coated glass substrates. The structural, morphological, electrical, optical and spectroscopic properties of the film deposited at 573K were studied. Infrared spectroscopy and x-ray diffraction confirmed the presence of the V2O5 phase. The V2O5 film (thickness similar to 118 nm) is polycrystalline with a tetragonal crystal structure. Scanning electron microscopy reveals compact granular morphology consisting of similar to 80-100 nm size grains. The film is transparent in the visible region (average %T similar to 70%) with an optical band gap energy of 2.47 eV involving both direct and indirect optical transitions. The room temperature electrical resistivity (conductivity) of the film is 1.6 x 10(8) Omega cm (6.25 x 10(-9) S cm(-1)) with an activation energy of 0.67 eV in the temperature range 300-550 K. It exhibited cathodic electrochromism in the lithium containing electrolyte (0.5 M LiClO4 + propylene carbonate).
机译：一种新的改进的脉冲喷雾热解技术（PSPT）被用来将甲醇钒氯化物前驱体上的氧化钒（V2O5）薄膜沉积到玻璃上，并进行F：SnO2涂层的玻璃基板的导电。研究了在573K沉积的薄膜的结构，形态，电学，光学和光谱性质。红外光谱和X射线衍射证实了V 2 O 5相的存在。 V2O5膜（厚度类似于118 nm）是具有四方晶体结构的多晶。扫描电子显微镜显示紧密的颗粒形态，由类似于80-100 nm的晶粒组成。该膜在可见光区域是透明的（平均％T类似于70％），其光带隙能量为2.47 eV，涉及直接和间接光学跃迁。薄膜的室温电阻率（电导率）为1.6 x 10（8）Ωcm（6.25 x 10（-9）S cm（-1）），在300-550 K的温度范围内具有0.67 eV的活化能在含锂的电解质（0.5 M LiClO4 +碳酸亚丙酯）中表现出阴极电致变色。

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