Analysis of charge-carrier injection at molecular orientation-controlled interfaces

2014 Fiscal Year Final Research Report

• Project/Area Number: 25790040
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Applied materials
• Research Institution: Kyushu University
• Principal Investigator: MATSUSHIMA Toshinori 九州大学, 最先端有機光エレクトロニクス研究センター, 准教授 (40521985)
• Project Period (FY): 2013-04-01 – 2015-03-31
• Keywords: 分子配向 / イオン化ポテンシャル / キャリア移動度 / 有機太陽電池 / 表面ダイポール / 開放電圧 / 冷間等方圧加圧 / 熱間等方圧加圧

Outline of Final Research Achievements

Control of molecular orientation led to an enhancement in light absorption, carrier mobilities, exciton diffusion lengths, and HOMO-LUMO differences, resulting in a significant enhancement in organic solar cell efficiencies three times. Cold isostatic pressing of an H2PC film was found to enhance its hole mobility 2000 times as well as performances of organic light-emitting diodes, organic thin film transistors, and organic solar cells. Operation of organic transistors containing organic powder compressed with hot isostatic pressing as a semiconductor was demonstrated to be possible. Hot isostatic pressing of organic-inorganic perovskite layers was very effective for improving perovskite film morphology and enhancing solar cell characteristics.

Free Research Field

有機エレクトロニクス