Highly efficient for fully printable organic-inorganic hybrid bulk heterojunction thin-film solar cells

2019 Fiscal Year Final Research Report

• Project/Area Number: 17K14924
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Energy engineering
• Research Institution: Oyama National College of Technology
• Principal Investigator: KATO Takehito 小山工業高等専門学校, 機械工学科, 准教授 (90590125)
• Project Period (FY): 2017-04-01 – 2020-03-31
• Keywords: 有機無機ハイブリッド太陽電池 / 電荷分離 / 相分離構造制御 / 金属アルコキシド

Outline of Final Research Achievements

Recent years have witnessed extensive research for the development of electronic devices such as solar cells, thermal electrical conversion devices, and light-emitting devices comprising organic and organic-inorganic hybrid materials. Particularly, organic and organic-inorganic hybrid solar cells exhibit potential advantages like low manufacturing cost, low weight, and mechanical flexibility. These solar cells typically contain two electrodes and one photoactive layer. The photoactive layer is composed of bulk heterostructures of a p-type semiconducting material as the electron donor and an n-type semiconducting material as the electron acceptor. Hence, morphology control of functional layers is important for high performance. In this viewpoint, I described the effect of the morphology control of nanophase separation structures in the photoactive layer of organic thin-film solar cells and organic-inorganic hybrid thin-film solar cells in this research.

Free Research Field

エネルギー工学

Academic Significance and Societal Importance of the Research Achievements

本研究では従来の2成分系バルクヘテロ相分離構造における電荷生成能力を大きく上回る3成分系バルクへテロ相分離構造によるマルチ電荷発生機構の構築とそれを用いた塗布型超高効率有機無機ハイブリッド太陽電池の開発を目指し、塗布プロセスの利用による低コスト化の実現と無毒材料の採用による安全性の兼備について、その可能性を示すことができた。