Structure and Function of Organic Solar Cells -Polymers with Specific Shapes and Analysis of their Hierarchical Structures-

2015 Fiscal Year Final Research Report

• Project/Area Number: 25248053
• Research Category: Grant-in-Aid for Scientific Research (A)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Device related chemistry
• Research Institution: Kyoto University
• Principal Investigator: Kaji Hironori 京都大学, 化学研究所, 教授 (30263148)
• Co-Investigator(Kenkyū-buntansha): SATOH Toshifumi 北海道大学, 大学院工学研究院, 教授 (80291235) ; FUKUSHIMA Tatsuya 京都大学, 化学研究所, 助教 (70705392)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: 有機太陽電池 / 有機デバイス / 固体NMR / 特殊形状高分子 / 階層構造解析

Outline of Final Research Achievements

In this study, we carried out the following fundamental researches on organic devices. Cyclic- and star-shaped polymers with short-wavelength absorptions were successfully synthesized. Power conversion efficiencies (PCEs) of organic solar cells (OSCs) using cyclic-shaped polymers were higher than those using conventional linear polymers. On the basis of solid-state NMR analysis, short-wavelength absorption type OSCs with high PCEs were successfully fabricated using a new polymer, especially without using halogenated solvents. These results will contribute greatly for the developments of environmentally-friendly tandem-type OSCs. In addition, we carried out device fabrications by a slot-die coater, whose PCEs were almost the same or slightly higher than those by the conventional spin-coating method. We also carried out studies on device degradation analysis, multiscale charge transport calculations, and organic light-emitting diodes. The progress of this study is beyond the expected.

Free Research Field

有機デバイス