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无机材料学报

无机材料学报

• 研究论文 • 上一篇    下一篇

TiO2纳米晶溶胶水热的合成及其染料敏化光电性能

张继远1,2,4, 田汉民1,3,4, 田志鹏1,2,4, 王湘艳1,3,4, 于 涛1,2,4, 邹志刚1,2,4   

  1. (南京大学 1. 环境材料与再生能源研究中心； 2. 物理学系； 3. 材料科学与工程系； 4. 固体微结构物理国家重点实验室， 南京 210093)
  • 收稿日期:2009-04-02 修回日期:2009-05-14 出版日期:2009-11-20 网络出版日期:2010-04-22

Study on Sol-hydrothermal Synthesis of TiO2 Nanoparticles and their Photoelectric Properties Sensitized by Dye

ZHANG Ji-Yuan1,2,4, TIAN Han-Min1,3,4, TIAN Zhi-Peng1,2,4,
WANG Xiang-Yan1,3,4, YUTao1,2,4, ZOU Zhi-Gang1,2,4   

  1. (1. Eco-materials and Renewable Energy Research Center (ERERC), Nanjing University, Nanjing 210093, China; 2. Department of Physics, Nanjing University, Nanjing 210093, China; 3. Department of Materials Science and Engineering, Nanjing University, Nanjing 210093, China; 4. National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China)

  • Received:2009-04-02 Revised:2009-05-14 Published:2009-11-20 Online:2010-04-22

PDF (PC)

2973

被引次数

3

摘要：

以异丙醇钛为前驱体，采用溶胶水热方法合成了TiO2纳米晶. 采用XRD和TEM等测试技术研究了合成条件对TiO2纳米晶的晶粒度、结晶度以及相转变的影响规律. 研究显示，通过控制前驱液的预热处理、水热温度及前驱液浓度等条件，实现了对TiO2纳米晶的晶型、结晶度、晶粒度 (10～20nm 到120nm) 的稳定调控. 采用优化实验条件后得到的TiO2纳米晶的水性浆料，使用精确控制膜厚的涂布技术，制作成染料敏化太阳电池 (Dye-Sensitized Solar Cells, DSSC).由于制备的TiO2纳米晶具有纯锐钛矿晶型、合适的晶粒大小和良好的结晶性，使DSSC的光电转换效率达到了7.33%，高于同样实验条件下以P25或商业TiO2浆料制作的DSSC的光电转换效率.

关键词: 染料敏化太阳电池, 纳米TiO2, 结晶度, 晶粒度

Abstract:

TiO2 nanopaticle was synthesised by sol-hydrothermal using titanium isopropoxide as the precursor. The effects of synthesis conditions on grain size, crystallinity and phase transformation between phasepure rutile and phase-pure anatase, were analyzed by TEM and XRD. It was revealed that crystal-type, crystallinity and crystal-size (from 10-20nm to 120nm) of TiO2 nanoparticles could be controlled by the pre-thermal treatment, hydrothermal temperature and concentration of the precursor. A paste, made from the nanoparticles and water, and by a doctor-blade technology which could control the thickness of the film were utilized to make a Dye-Sensitized Solar Cell (DSSC), which achieved a photoelectric conversion efficiency of 7.33%, as a result of the phase-pure anatase, appropriate grain size and favorable crystallinity of the TiO2 nanoparticles. It exceeded those DSSC’s efficiencies made from the commercial paste or P25 paste.

Key words: dye-sensitized solar cells, nanoparticle TiO2, crystallinity, grain size

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