Material Scientific Approach Achieving Full Color Phosphorescent OLED

2016 Fiscal Year Final Research Report

• Project/Area Number: 26288111
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Device related chemistry
• Research Institution: Chiba University
• Principal Investigator: KARATSU TAKASHI 千葉大学, 工学(系)研究科(研究院), 教授 (70214575)
• Research Collaborator: SUZURI Yoshiyuki 山形大学, 工学部 ; YAGAI Shiki 千葉大学, 工学研究科
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 光デバイス / 半導体デバイス / OLED / 有機EL / 発光材料 / 材料化学

Outline of Final Research Achievements

Iridium triscyclometalated complexes are one of the promising light emitting materials for organic light emitting diode (OLED). The complexes have advantage in efficiency since they emit phosphorescence. However, they have tasks to improve performance of blue emitting complexes such as chromaticity, efficiency, and durability for accomplishing RGB. This research revealed relation between emission and nonradiative deactivation. The energy level related emission depend on the structure of ligand, however, the energy level of very weakly depend by means of nonradiative deactivation on the structure. The mechanism of nonradiative deactivation was studied by meas of the structural isomerization.

Free Research Field

光化学