Masahito Takakuwa, Soo Won Heo, Hiroki Kimura, Kenjiro Fukuda, Takao Someya, Keisuke Tajima, Shinjiro Umezu, "Developing the High Efficiency Ultra-thin Organic Photovoltaics via a Nano-grating Structured Ultra-thin Substrate" 2019ICFPE, Taipei Nangang Exhibition Center, Taiwan,Outstanding Paper Award2019.10.24