Synthesis of mesoporous TiO2 spheres and aggregates by sol-gel method for dye-sensitized solar cells

Hui Tong, Naoya Enomoto, Miki Inada, Yumi Tanaka, Junichi Hojo

研究成果: Contribution to journalArticle査読

16 被引用数 (Scopus)


Mesoporous microspheres of anatase TiO2 were synthesized by hydrolysis of titanium butoxide in butanol. The TiO2 micospheres were about 0.5 μm in size, composed of primary nanoparticles of about 10 nm, and the specific surface area increased by addition of triblock copolymer (Pluronic F127). TiO2 aggregates with irregular shape were formed by hydrothermal treatment. Before and after calcination, the crystallinity of TiO2 aggregates was high although the specific surface area decreased. The cell efficiency of TiO2 sphere electrode increased by F127 addition. Furthermore, TiO2 aggregate electrode exhibited an efficiency of 5.6%, which was much higher than those of TiO2 spheres with F127 and commercial TiO2 nanoparticles (P25) electrodes. It was confirmed that the high crystallinity of TiO2 was important to improve the photovoltaic properties as well as large surface area.

ジャーナルMaterials Letters
出版ステータス出版済み - 2 15 2015

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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