Chemical Physics Letters, volume 203, issue 2-3, pages 271-276

Detection of shallow electron traps in quantum sized CdS by fluorescence quenching experiments

A Hässelbarth 1
A. Eychmüller
H. Weller 1
1
 
Abteilung Photochemie, Hahn-Meitner-Institut, Glienickerstrasse 100, W-1000 Berlin 39, Germany
Publication typeJournal Article
Publication date1993-02-01
Quartile SCImago
Q2
Quartile WOS
Q2
Impact factor2.8
ISSN00092614
Physical and Theoretical Chemistry
General Physics and Astronomy
Abstract
Stationary and time-resolved quenching measurements of the excitonic and trapped fluorescence of quantum sized CdS colloids were carried out. We found that nitromethane is only capable of quenching the excitonic fluorescence nearly completely, whereas a fraction of the trapped fluorescence, the amount of which depends on the particle size, always remains. Methylviologen, with a slightly more positive acceptor potential, is able to quench both types of fluorescence nearly completely in all the investigated samples. The findings are explained straightforwardly by a fluorescence mechanism involving shallow electron traps and deep hole traps located on the surface of the nanocrystalline particles.

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Hässelbarth A. et al. Detection of shallow electron traps in quantum sized CdS by fluorescence quenching experiments // Chemical Physics Letters. 1993. Vol. 203. No. 2-3. pp. 271-276.
GOST all authors (up to 50) Copy
Hässelbarth A., Eychmüller A., Eychmüller A., Weller H. Detection of shallow electron traps in quantum sized CdS by fluorescence quenching experiments // Chemical Physics Letters. 1993. Vol. 203. No. 2-3. pp. 271-276.
RIS |
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RIS Copy
TY - JOUR
DO - 10.1016/0009-2614(93)85400-I
UR - https://doi.org/10.1016/0009-2614(93)85400-I
TI - Detection of shallow electron traps in quantum sized CdS by fluorescence quenching experiments
T2 - Chemical Physics Letters
AU - Hässelbarth, A
AU - Eychmüller, A.
AU - Weller, H.
AU - Eychmüller, Alexander
PY - 1993
DA - 1993/02/01 00:00:00
PB - Elsevier
SP - 271-276
IS - 2-3
VL - 203
SN - 0009-2614
ER -
BibTex |
Cite this
BibTex Copy
@article{1993_Hässelbarth,
author = {A Hässelbarth and A. Eychmüller and H. Weller and Alexander Eychmüller},
title = {Detection of shallow electron traps in quantum sized CdS by fluorescence quenching experiments},
journal = {Chemical Physics Letters},
year = {1993},
volume = {203},
publisher = {Elsevier},
month = {feb},
url = {https://doi.org/10.1016/0009-2614(93)85400-I},
number = {2-3},
pages = {271--276},
doi = {10.1016/0009-2614(93)85400-I}
}
MLA
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MLA Copy
Hässelbarth, A., et al. “Detection of shallow electron traps in quantum sized CdS by fluorescence quenching experiments.” Chemical Physics Letters, vol. 203, no. 2-3, Feb. 1993, pp. 271-276. https://doi.org/10.1016/0009-2614(93)85400-I.
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