Development of next-generation transparent electrodes for solar cells utilizing near-infrared light

2017 Fiscal Year Final Research Report

• Project/Area Number: 15K04687
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Thin film/Surface and interfacial physical properties
• Research Institution: The University of Tokyo (2017); Kanagawa Academy of Science and Technology (2015-2016)
• Principal Investigator: Nakao Shoichiro 東京大学, 大学院理学系研究科(理学部), 特任研究員 (50450771)
• Research Collaborator: Fukumoto Michitaka 東京大学, 大学院理学系研究科, 大学院学生
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: 酸化スズ / スパッタ / 透明導電膜 / 太陽電池

Outline of Final Research Achievements

We developed a novel method to fabricate textured surfaces on transparent　conductive SnO 2 films by processing substrates through a bottom-up technique with potential for industrially scalable production. The substrate processing consists of three steps: deposition of precursor Sn films on glass substrates, formation of a self-assembled Sn nanosphere layer with reductive annealing, and conversion of Sn to SnO 2 by oxidative annealing. Ta-doped SnO 2 films conformally deposited on the self-assembled nanospherical SnO 2 templates exhibited attractive optical and electrical properties, namely, enhanced haze values and low sheet resistances, for applications as transparent electrodes in photovoltaics.

Free Research Field

薄膜