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

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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Open Access PublizierenNo information

Project financing: Deutsche Forschungsgemeinschaft
GRK1640

Abstract in another language

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
Refereed: Yes
Keywords: Exciton Emission; Organic Single Crystals; Energy-Momentum Spectroscopy
Institutions of the University: Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Lehrstuhl Experimentalphysik IX - Spektroskopie weicher Materie
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
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 530 Physics
Date Deposited: 22 Jun 2018 06:17
Last Modified: 05 Mar 2019 09:45
URI: https://eref.uni-bayreuth.de/id/eprint/44602