Studies on TiO2 nanoparticles encapsulating self-organized liquid crystalline dye semiconductors

2015 Fiscal Year Final Research Report

• Project/Area Number: 26600035
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Nanomaterials chemistry
• Research Institution: National Institute of Advanced Industrial Science and Technology
• Principal Investigator: Shimizu Yo 国立研究開発法人産業技術総合研究所, 無機機能材料研究部門ハイブリッドアクチュエータグループ, 研究員 (40357223)
• Co-Investigator(Kenkyū-buntansha): KOBIRO KAZUYA 高知工科大学, 工学部, 教授 (60170370) ; WANG PENGYU 高知工科大学, 総合研究所, 特任講師 (60598184) ; OHTANI MASATAKA 高知工科大学, 工学部, 助教 (20585004)
• Project Period (FY): 2014-04-01 – 2016-03-31
• Keywords: 酸化チタン / ナノ粒子 / 色素増感型有機太陽電池 / 超臨界反応 / 液晶性色素 / 液晶性有機半導体

Outline of Final Research Achievements

It was found that hollow TiO2 nanoparticles(NPs) encapsulating alkylphthalocyanine liquid crystalline semiconductor (aPc LCS) can be synthesized by a sol-gel reaction at high temperature and pressure which was developed by the collaborators.
This method gives such a TiO2 NPs quantitatively of which diameter ca. 800 nm with ca. 140 nm of shell thickness with >70vol% of aPc LCS.
This NPs were applied to the fabrication of dye-sensitized solar cells (DSSCs) to give an evidence that this method could provide TiO2 NPs encapsulating a variety of dye semiconductors to give a new type of DSSCs of which photo-absorption fully covers solar spectrum range.

Free Research Field

液晶化学、有機光電子化学