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Disentangling the Orientations of Spectrally Overlapping Transition Dipoles in Dense Dye Layers

Title data

Schnupfhagn, Christoph ; Schumacher, Thorsten ; Markus, Paul ; Papastavrou, Georg ; Aftenieva, Olha ; König, Tobias A. F. ; Dudko, Volodymr ; Matejdes, Marian ; Breu, Josef ; Lippitz, Markus:
Disentangling the Orientations of Spectrally Overlapping Transition Dipoles in Dense Dye Layers.
In: Nano Letters. Vol. 22 (2022) Issue 18 . - pp. 7499-7505.
ISSN 1530-6992
DOI: https://doi.org/10.1021/acs.nanolett.2c02438

Official URL: Volltext

Abstract in another language

The transition dipole orientations of dye assemblies in heterostructures have a crucial impact on the efficiency of novel optoelectronic devices such as organic thin-film transistors and light-emitting diodes. These devices are frequently based on heterojunctions and tandem structures featuring multiple optical transitions. Precise knowledge of preferred orientations, spatial order, and spatial variations is highly relevant. We present a fast and universal large-area screening method to determine the transition dipole orientations in dye assemblies with diffraction-limited spatial resolution. Moreover, our hyperspectral imaging approach disentangles the orientations of different chromophores. As a demonstration, we apply our technique to dye monolayers with two optical transitions sandwiched between two ultrathin silicate nanosheets. A comprehensive model for dipole orientation distributions in monolayers reveals a long-range orientational order and a strong correlation between the two transitions.

Further data

Item Type: Article in a journal
Refereed: Yes
Institutions of the University: Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Chair Experimental Physics III - Nanooptics
Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Chair Experimental Physics III - Nanooptics > Chair Experimental Physics III - Nanooptics - Univ.-Prof. Dr. Markus Lippitz
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Physical Chemistry II
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Physical Chemistry II > Chair Physical Chemistry II - Univ.-Prof. Dr. Georg Papastavrou
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Inorganic Chemistry I
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Inorganic Chemistry I > Chair Inorganic Chemistry I - Univ.-Prof. Dr. Josef Breu
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 530 Physics
Date Deposited: 20 Oct 2022 05:59
Last Modified: 20 Oct 2022 05:59
URI: https://eref.uni-bayreuth.de/id/eprint/72480