Enhancement of Spontaneous Orientation Polarization in Organic Semiconductor Mixtures

Autor:	Hofmann, Alexander, Cakaj, Albin, Kolb, Lea, Noguchi, Yutaka, Brütting, Wolfgang
Rok vydání:	2024
Předmět:	Condensed Matter - Materials Science Physics - Applied Physics
Druh dokumentu:	Working Paper
Popis:	The alignment of permanent dipole moments and the resulting spontaneous orientation polarization (SOP) is commonly observed in evaporated neat films of polar organic molecules and leads to a so-called giant surface potential. In case of mixed films, often enhanced molecular orientation is observed, i.e.\ a higher degree of alignment, in comparison to neat layers, if it is diluted into a suitable (non-polar) host. So far, different possible influences on molecular orientation have been discussed, the most prominent probably being the so-called surface equilibration model. In this contribution, we discuss how surface equilibration can influence orientation in mixed layers, and which other intermolecular interactions have to be considered to explain the observed enhancement of SOP in mixed layers. Comment: 12 pages, 6 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2410.17060 Zobrazit plný text záznamu View this record from Arxiv