高等学校化学学报

高等学校化学学报 ›› 2000, Vol. 21 ›› Issue (S1): 275.

• Chemistry in Materials Sciences • 上一篇    下一篇

Low Temperature Preparation and Absorption Spectra of Nanocrystalline Pb1-xLaxTiO3 Thin Film on ITO Conducting Glass Substrate

QIU Fa-Binac1,3, GUO Kui2, ZOU Bo2, WANG Yong-Wei2, QUAN Bao-Fu1, LI Xi2, HUANG Xi-Min3   

  1. 1. Department of Electronic Engineering, Jilin University, Changchun 130023;
    2. bDepartment of Chemistry, Jilin University, Changchun 130023;
    3. Institute of Changchun Optics, Fine Mechanics and Physics, The Chinese Academy of Sciences, Changchun 130022
  • 出版日期:2000-12-31 发布日期:2000-12-31

Low Temperature Preparation and Absorption Spectra of Nanocrystalline Pb1-xLaxTiO3 Thin Film on ITO Conducting Glass Substrate

QIU Fa-Binac1,3, GUO Kui2, ZOU Bo2, WANG Yong-Wei2, QUAN Bao-Fu1, LI Xi2, HUANG Xi-Min3   

  1. 1. Department of Electronic Engineering, Jilin University, Changchun 130023;
    2. bDepartment of Chemistry, Jilin University, Changchun 130023;
    3. Institute of Changchun Optics, Fine Mechanics and Physics, The Chinese Academy of Sciences, Changchun 130022
  • Online:2000-12-31 Published:2000-12-31

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摘要：

Nanocrystalline precursors of Pb1-xLaxTiO3 (PLT, x=0.06, 0.10, 0.14 and 0.20) thin film were prepared on ordinary ITO conducting glass substrate using sol-gel and pulling method. After the precursors were calcined at low temperature of 185-400℃ in air atmosphere for 1-6 h, the resulted nanocrystalline thin film was characterized by XRD, SEM and AFM. The spectra show that the solid state chemical reaction and the grain size of the nanocrystalline thin film relate not only to the precursor preparing method, but also to the distribution of different components in the precursor. The UV-VI spectrum measurement of the transparent PLT film indicates that its optical absorption bands have extended into the visible region and a change in its absorption pattern with the increase of mean grain size was also observed. As the transparent nanocrystalline PLT thin film with small grain size possesses wider optical absorption band in range of 320-800 nm, the material of Pb1-xLaxTiO3 with suitable component and mean grain size can be used in the fabrication of dye-sensitized photoelectronchemistry solar cell instead of TiO2. And the higher photoelectric efficiency can be expected.

Abstract:

Nanocrystalline precursors of Pb1-xLaxTiO3 (PLT, x=0.06, 0.10, 0.14 and 0.20) thin film were prepared on ordinary ITO conducting glass substrate using sol-gel and pulling method. After the precursors were calcined at low temperature of 185-400℃ in air atmosphere for 1-6 h, the resulted nanocrystalline thin film was characterized by XRD, SEM and AFM. The spectra show that the solid state chemical reaction and the grain size of the nanocrystalline thin film relate not only to the precursor preparing method, but also to the distribution of different components in the precursor. The UV-VI spectrum measurement of the transparent PLT film indicates that its optical absorption bands have extended into the visible region and a change in its absorption pattern with the increase of mean grain size was also observed. As the transparent nanocrystalline PLT thin film with small grain size possesses wider optical absorption band in range of 320-800 nm, the material of Pb1-xLaxTiO3 with suitable component and mean grain size can be used in the fabrication of dye-sensitized photoelectronchemistry solar cell instead of TiO2. And the higher photoelectric efficiency can be expected.

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