EVENTS 講演会

先導物質化学研究所 講演会

講　　師　：　Prof. Wolfgang Brütting（Institute of Physics, University of Augsburg）

演　　題　：　「The Many Facets of Molecular Orientation in Organic Optoelectronics」

開催日時　：　2025年11月5日 (水) 10:00~11:30

開催場所　：　筑紫キャンパス 先導物質化学研究所 中央棟 111セミナー室

概要：
Molecular orientation in organic semiconductors has many different facets, such as optical anisotropy leading to birefringence, alignment of their optical transition dipole moments (TDMs) and/or their permanent electrical dipole moments (PDMs)1. While TDM alignment is well established and readily exploited to improve light outcoupling in organic light-emitting diodes (OLEDs)2, PDM alignment and the resultant spontaneous orientation polarization (SOP) is by far less investigated, and it is not fully clear yet if it is beneficial or detrimental for device application3.
In this presentation, we review the current understanding of molecular orientation mecha-nisms, including factors like molecular shape, surface equilibration and intermolecular inter-actions. We report on the effects that substrate temperature during film growth, dilution in host matrices and details of the chemical structure have on orientation