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  Theory of optical excitations in dipole-coupled hybrid molecule-semiconductor layers: Coupling of a molecular resonance to semiconductor continuum states

Verdenhalven, E., Knorr, A., Richter, M., Bieniek, B., & Rinke, P. (2014). Theory of optical excitations in dipole-coupled hybrid molecule-semiconductor layers: Coupling of a molecular resonance to semiconductor continuum states. Physical Review B, 89(23): 235314. doi:10.1103/PhysRevB.89.235314.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0019-B428-B Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0023-F641-E
Genre: Journal Article

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PhysRevB.89.235314.pdf (Publisher version), 2MB
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 Creators:
Verdenhalven, Eike1, Author
Knorr, Andreas1, Author
Richter, Marten1, Author
Bieniek, Björn2, Author              
Rinke, Patrick2, Author              
Affiliations:
1Institut für Theoretische Physik, Nichtlineare Optik und Quantenelektronik, Technische Universität Berlin, Hardenbergstr. 36, 10623 Berlin, Germany, ou_persistent22              
2Theory, Fritz Haber Institute, Max Planck Society, ou_634547              

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 Abstract: We theoretically investigate the optical absorption of a hybrid system consisting of an organic molecular lm on top of a semiconductor substrate. The electronic states of the isolated spatially separated constituents couple due to the Coulomb interaction of the optically induced charge carriers across the lm-substrate interface. Focussing on the coupling of optical active molecular transitions to semiconductor continuum states, we nd that the non-radiative dipole-dipole energy transfer causes the formation of coupled excitations, eectively reducing the excitation energy of the optical resonance in the molecular lm and inducing a broadening of the associated absorption peak. In the framework of the Heisenberg equation of motion technique we derive the Bloch equations for these hybrid systems. The input parameters for our model system of ladder-type quarterphenyl (L4P) molecules on the ZnO(1010) surface are taken from density functional theory calculations.

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Language(s): eng - English
 Dates: 2014-05-212014-04-032014-05-282014-06-19
 Publication Status: Published in print
 Pages: 11
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1103/PhysRevB.89.235314
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Title: Physical Review B
  Other : Phys. Rev. B
Source Genre: Journal
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Publ. Info: Woodbury, NY : American Physical Society
Pages: - Volume / Issue: 89 (23) Sequence Number: 235314 Start / End Page: - Identifier: ISSN: 1098-0121
CoNE: /journals/resource/954925225008