Management of triplet excitons by weak molecular interactions and application for organic semiconducting devices

2016 Fiscal Year Final Research Report

• Project/Area Number: 15K21220
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Functional solid state chemistry; Device related chemistry
• Research Institution: Kyushu University
• Principal Investigator: KABE Ryota 九州大学, 最先端有機光エレクトロニクス研究センター, 助教 (00726490)
• Project Period (FY): 2015-04-01 – 2017-03-31
• Keywords: リン光 / 非放射失活 / 有機半導体 / 金属有機構造体 / 有機EL / 有機エレクトロニクス

Outline of Final Research Achievements

We developed novel host materials aiming for the harvesting of the triplet excitons into emission by suppression of the nonradiative decay. We demonstrate that long-lived emission from triplet excitons can be achieved even at high temperature by encapsulating organic emitter in metal organic frameworks (MOFs). Moreover, we demonstrate an organic light-emitting diode (OLED) containing a long-lived phosphorescence emitter that displays electroluminescence with long transient decay after it is turned off. To achieve LLP from an emitter layer, we developed the host molecule 3-(N-carbazolyl)-androst-2-ene (CzSte), which can minimize the nonradiative decay of guest emitter molecules.

Free Research Field

材料科学