Preparation of titanium dioxide thick films by indirect-electrodeposition for dye-sensitized solar cells.

2016 Fiscal Year Final Research Report

• Project/Area Number: 25420782
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Material processing/Microstructural control engineering
• Research Institution: Osaka Municipal Technical Research Institute
• Principal Investigator: Chigane Masaya 地方独立行政法人大阪市立工業研究所, 電子材料研究部, 研究部長 (40416326)
• Project Period (FY): 2013-04-01 – 2017-03-31
• Keywords: 酸化チタン / 電解析出 / 色素増感太陽電池 / チタン乳酸錯体 / 無電解めっき

Outline of Final Research Achievements

The novel film preparation method of titanium oxide films, named “indirect-electrodeposition” was investigated. The films were prepared on a quartz glass substrate by the cathodic galvanostatic electrolysis of a solution of titanium bis(ammonium lactato)dihydroxide and ammonium nitrate at 323 K using a stainless steel electrode as a “dummy electrode” located in the vicinity (within ~1 mm) of the substrate. The films are deposited on the area of the substrate above the electrolyte solution surface. As the distance between the substrate and dummy electrode increased, the deposition range on the substrate was reduced, according to the principles of capillary action. The deposited film was identified as TiO2 by X-ray photoelectron spectroscopy. The amorphous as-deposited film was converted to the anatase-type crystalline TiO2 phase by calcination at 723 K. The dye-sensitized solar cell using the TiO2 films exhibited conversion efficiency 2.1 %.

Free Research Field

電気化学