Optical and electrical characterization of element-block polymers, and development of opto-electronic devices based on the polymers using device simulation

2016 Fiscal Year Final Research Report

• Project Area: Creation of Element-Block Polymer Materials
• Project/Area Number: 24102011
• Research Category: Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)
• Allocation Type: Single-year Grants
• Review Section: Science and Engineering
• Research Institution: Osaka Prefecture University
• Principal Investigator: Naito Hiroyoshi 大阪府立大学, 工学(系)研究科(研究院), 教授 (90172254)
• Co-Investigator(Kenkyū-buntansha): 永瀬 隆 大阪府立大学, 工学(系)研究科(研究院), 准教授 (00399536) ; 小林 隆史 大阪府立大学, 工学(系)研究科(研究院), 准教授 (10342784)
• Project Period (FY): 2012-06-28 – 2017-03-31
• Keywords: 元素ブロック高分子 / 有機太陽電池 / 有機発光ダイオード / 有機トランジスタ / 物性評価法 / デバイスシミュレーション

Outline of Final Research Achievements

Optical and electronic properties of element block materials such as Eu complex polymers and chemically-modified graphene nanodots have been studied. It has been shown that high mobility observed in organic field transistors with top-gate configuration is due to highly-ordered structures spontaneously formed at organic-semiconductor surfaces. Field-effect mobility of 10 cm2/Vs has been observed in the organic transistors based on a polycrystalline organic semiconductor. Device operation mechanisms have been elucidated in inverted organic light-emitting diodes that play an essential role as display devices for flexible displays. The usefulness of device simulation for the prediction of optimum thickness of bulk heterojunction of organic solar cells has been demonstrated. A method for simultaneous determination of drift mobility, lifetime and localized-state distribution characterizing transport properties of organic semiconductors, based on impedance spectroscopy, has been proposed.

Free Research Field

有機エレクトロニクス