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

Title data

Naumov, Andrei V. ; Gorshelev, Aleksey A. ; Vainer, Yuri 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 1463-9084
DOI: https://doi.org/10.1039/C0CP01689F

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Abstract in another language

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
Refereed:	Yes
Institutions of the University:	Faculties Faculties > Faculty of Mathematics, Physics und Computer Science Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics Research Institutions > Research Centres > Bayreuth Institute of Macromolecular Research - BIMF Research Institutions Research Institutions > Research Centres
Result of work at the UBT:	Yes
DDC Subjects:	500 Science 500 Science > 500 Natural sciences 500 Science > 530 Physics
Date Deposited:	26 Mar 2015 16:48
Last Modified:	09 Sep 2020 04:55
URI:	https://eref.uni-bayreuth.de/id/eprint/8645