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Self-Interference of Exciton Emission in Organic Single Crystals Visualized by Energy-Momentum Spectroscopy

DOI zum Zitieren dieses Dokuments: https://doi.org/10.1021/acsomega.8b00811
URN to cite this document: urn:nbn:de:bvb:703-epub-4276-4

Title data

Schörner, Christian ; Motamen, Sajedeh ; Simon, Laurent ; Reiter, Günter ; Hildner, Richard:
Self-Interference of Exciton Emission in Organic Single Crystals Visualized by Energy-Momentum Spectroscopy.
In: ACS Omega. Vol. 3 (2018) Issue 6 . - pp. 6728-6736.
ISSN 2470-1343
DOI: https://doi.org/10.1021/acsomega.8b00811

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Project information

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Project's official titleProject's id
Open Access PublizierenNo information

Project financing: Deutsche Forschungsgemeinschaft
GRK1640

Abstract

We employ energy-momentum spectroscopy on isolated organic single crystals with micrometer-sized dimensions. The single crystals are grown from a thiophene-based oligomer and are excellent low-loss active waveguides that support multiple guided modes. Excitation of the crystals with a diffraction-limited laser spot results in emission into guided modes as well as into quasi-discrete radiation modes. These radiation modes are mapped in energy-momentum space and give rise to dispersive interference patterns. On the basis of the known geometry of the crystals, especially the height, the characteristics of the interference maxima allow one to determine the energy dependence of two components of the anisotropic complex refractive index. Moreover, the method is suited to identify the orientation of molecules within (and around) a crystalline structure.

Further data

Item Type: Article in a journal
Keywords: Exciton Emission; Organic Single Crystals; Energy-Momentum Spectroscopy
DDC Subjects: 500 Science > 530 Physics
Institutions of the University: Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Chair Experimental Physics IX - Spectroscopy of Soft Matter
Profile Fields > Advanced Fields > Polymer and Colloid Science
Graduate Schools > Bayreuth Graduate School of Mathematical and Natural Sciences (BayNAT) > Photophysics of Synthetic and Biological Multichromophoric Systems
Graduate Schools > Elite Network Bavaria > Macromolecular Science
Faculties
Faculties > Faculty of Mathematics, Physics und Computer Science
Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics
Profile Fields
Profile Fields > Advanced Fields
Graduate Schools
Graduate Schools > Bayreuth Graduate School of Mathematical and Natural Sciences (BayNAT)
Graduate Schools > Elite Network Bavaria
Language: English
Originates at UBT: Yes
URN: urn:nbn:de:bvb:703-epub-4276-4
Date Deposited: 05 Mar 2019 09:43
Last Modified: 05 Mar 2019 09:43
URI: https://epub.uni-bayreuth.de/id/eprint/4276

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