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Impurity spectroscopy at its ultimate limit: relation between bulk spectrum, inhomogeneous broadening, and local disorder by spectroscopy of (nearly) all individual dopant molecules in solids

DOI zum Zitieren der Version auf EPub Bayreuth: https://doi.org/10.15495/EPub_UBT_00004787
URN to cite this document: urn:nbn:de:bvb:703-epub-4787-1

Title data

Naumov, Andrei V. ; Gorshelev, Aleksey A. ; Vainer, Yury G. ; Kador, Lothar ; Köhler, Jürgen:
Impurity spectroscopy at its ultimate limit: relation between bulk spectrum, inhomogeneous broadening, and local disorder by spectroscopy of (nearly) all individual dopant molecules in solids.
In: Physical Chemistry Chemical Physics. Vol. 13 (2011) Issue 5 . - pp. 1734-1742.
ISSN 1463-9076
DOI der Verlagsversion: https://doi.org/10.1039/c0cp01689f

Abstract

We present a technique for the measurement of the low-temperature fluorescence excitation spectra and imaging of a substantial fraction of all single chromophore molecules (hundreds of thousands and even more) embedded in solid bulk samples as nanometre-sized probes. An important feature of our experimental studies is that the full information about the lateral coordinates and spectral parameters of all individual molecules is stored for detailed analysis. This method enables us to study a bulk sample in a broad spectral region with ultimate sensitivity, combining excellent statistical accuracy and the capability of detecting rare events. From the raw data we determined the distributions of several parameters of the chromophore spectra and their variations across the inhomogeneous absorption band, including the frequencies of the electronic zero-phonon lines, their spectral linewidths, and fluorescence count rates. Relationships between these distributions and the disorder of the matrix were established for the examples of two polycrystalline solids with very different properties, n-hexadecane and o-dichlorobenzene, and the amorphous polymer polyisobutylene. We also found spatially inhomogeneous distributions of some parameters.

Further data

Item Type: Article in a journal
Additional notes (visible to public): ISI:000286388800003
DDC Subjects: 500 Science > 530 Physics
500 Science > 540 Chemistry
Institutions of the University: Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Chair Experimental Physics IX - Spectroscopy of Soft Matter > Chair Experimental Physics IX - Spectroscopy of Soft Matter - Univ.-Prof. Dr. Jürgen Köhler
Faculties
Faculties > Faculty of Mathematics, Physics und Computer Science
Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics
Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Chair Experimental Physics IX - Spectroscopy of Soft Matter
Language: English
Originates at UBT: Yes
URN: urn:nbn:de:bvb:703-epub-4787-1
Date Deposited: 09 Sep 2020 04:52
Last Modified: 09 Sep 2020 05:05
URI: https://epub.uni-bayreuth.de/id/eprint/4787

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