Creation of energy harvesting system based on room temperature spin cluster glass

2017 Fiscal Year Final Research Report

• Project/Area Number: 16K14226
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Electronic materials/Electric materials
• Research Institution: The University of Tokyo
• Principal Investigator: Seki Munetoshi 東京大学, 大学院工学系研究科(工学部), 特任准教授 (40432439)
• Project Period (FY): 2016-04-01 – 2018-03-31
• Keywords: 酸化鉄薄膜 / 環境発電

Outline of Final Research Achievements

Thin films of room temperature cluster glass Si:CoFe2O4 were fabricated towards the high-efficiency energy harvesting systems. We successfully fabricated high quality films using a two-step pulsed laser deposition and it was found that non-magnetic Si4+ ions were uniformly distributed in the films. We also found that the partial surface oxidation of Si:CoFe2O4 was suppressed by depositing an ultrathin insulating layer of Ga2O3 on the film. Furthermore, cluster glass (Fe, Al, Si)2O3 films were fabricated using a two-step PLD for the improvement of photoelectric conversion efficiency. The (Fe, Al, Si)2O3 films shows cluster glass-like behaviors and photoinduced magnetization at room temperature.

Free Research Field

電子物性