scholarly journals Temperature-Dependent Relaxation of Excitons in Tubular Molecular Aggregates:  Fluorescence Decay and Stokes Shift

2006 ◽  
Vol 110 (41) ◽  
pp. 20268-20276 ◽  
Author(s):  
A. Pugžlys ◽  
R. Augulis ◽  
P. H. M. van Loosdrecht ◽  
C. Didraga ◽  
V. A. Malyshev ◽  
...  
Keyword(s):  
Stokes Shift ◽  
Fluorescence Decay ◽  
Molecular Aggregates ◽  
Temperature Dependent

Temperature-dependent nonmonotonous evolution of excitonic blue luminescence and Stokes shift in chlorine-based organometallic halide perovskite film

2020 ◽  
Vol 116 (7) ◽  
pp. 072104
Author(s):  
Beng Jiang ◽  
Yue Li ◽  
Jiabin Zhu ◽  
Ziting Hu ◽  
Xuemeng Zhou ◽  
...  
Keyword(s):  
Stokes Shift ◽  
Blue Luminescence ◽  
Temperature Dependent ◽  
Halide Perovskite

Excitons in Molecular Aggregates of 3,3‘-Bis-[3-sulfopropyl]-5,5‘-dichloro-9- ethylthiacarbocyanine (THIATS):  Temperature Dependent Properties

2001 ◽  
Vol 105 (20) ◽  
pp. 4636-4646 ◽  
Author(s):  
I. G. Scheblykin ◽  
O. Yu. Sliusarenko ◽  
L. S. Lepnev ◽  
A. G. Vitukhnovsky ◽  
M. Van der Auweraer
Keyword(s):  
Molecular Aggregates ◽  
Temperature Dependent ◽  
Temperature Dependent Properties

scholarly journals Temperature dependent excited state relaxation of a red emitting DNA-templated silver nanocluster

2017 ◽  
Vol 53 (93) ◽  
pp. 12556-12559 ◽  
Author(s):  
Cecilia Cerretani ◽  
Miguel R. Carro-Temboury ◽  
Stefan Krause ◽  
Sidsel Ammitzbøll Bogh ◽  
Tom Vosch
Keyword(s):  
Excited State ◽  
Decay Time ◽  
Fluorescence Decay ◽  
Silver Nanoclusters ◽  
Temperature Dependent ◽  
Silver Nanocluster ◽  
Fluorescence Decay Time ◽  
Average Fluorescence

The average fluorescence decay time of DNA-stabilized silver nanoclusters is temperature dependent and could find applications in nanothermometry.

Temperature-dependent photoluminescence Stokes shift in PbS quantum dots

2013 ◽  
Vol 53 ◽  
pp. 63-65 ◽  
Author(s):  
Maxim S. Gaponenko ◽  
Nikolai A. Tolstik ◽  
Andrey A. Lutich ◽  
Alexei A. Onushchenko ◽  
Konstantin V. Yumashev
Keyword(s):  
Quantum Dots ◽  
Stokes Shift ◽  
Temperature Dependent ◽  
Pbs Quantum Dots ◽  
Temperature Dependent Photoluminescence

Die Lösungsmittelabhängigkeit der Elektronenspektren und die Änderung der Dipoleigenschaften N-substituierter Acridone bei elektronischer Anregung / The Solvent Dependence of the Electronic Spectra and the Change of the Dipole Properties of N-Substituted Acridones at Electronic Excitation

1980 ◽  
Vol 35 (10) ◽  
pp. 1076-1086 ◽  
Author(s):  
M. Siegmund ◽  
J. Bendig
Keyword(s):  
Fluorescence Spectra ◽  
Electronic Excitation ◽  
Stokes Shift ◽  
Solvent Polarity ◽  
Temperature Dependent ◽  
Protic Solvents ◽  
Long Wave ◽  
Solvent Dependence ◽  
Natural Fluorescence ◽  
Positive Solvatochromism

Abstract The absorption and fluorescence spectra of acridone, N-methylacridone and N-phenylacridone are measured at 298 K for 35 solvents of different polarity. For the long wave 1La-transition, which shows a distinct positive solvatochromism, the oscillator strenght and the natural fluorescence lifetime are calculated. The change of the dipole moment (pd), determined from the Stokes’ shift as a function of solvent polarity, is nearly parallel to that of the ground state (pg). The absolute values and directions of pg and pe confirm the increasing polar character of the S1-state within the sequence N-phenylacridone, acridone and N-methylacridone. These values are used for an interpretation of the charge distribution and solvatation of the S0- and S1-states. By consideration of the solvent relaxation and the activation energy of the temperature dependent S1-T2 intersystem crossing process it is shown that in addition to the decrease of the S1-energy with increasing solvent polarity the T2-energy increases relative to S0, especially in the case of protic solvents.

scholarly journals Optical Investigations of AlGaN on GaN Epitaxial Films

1999 ◽  
Vol 4 (S1) ◽  
pp. 244-249 ◽  
Author(s):  
G. Steude ◽  
T. Christmann ◽  
B.K. Meyer ◽  
A. Goeldner ◽  
A. Hoffmann ◽  
...  
Keyword(s):  
Vapor Phase ◽  
Compressive Strain ◽  
Stokes Shift ◽  
Epitaxial Films ◽  
Luminescence Line ◽  
Temperature Dependent ◽  
Organic Vapor ◽  
Metal Organic ◽  
Random Alloy ◽  
Gan Film

We have investigated AlxGa1−xN /GaN heterostructures (0<x<0.22) grown by metal organic vapor phase epitaxy on sapphire with photoluminescence (PL), reflexion and cathodo-luminescence experiments. The energetic positions of the free A-exciton in GaN and AlGaN as a function of the alloy compositions are deduced from temperature dependent PL and from reflexion measurements. We obtain a small bowing parameter and no evidence for a Stokes shift between absorption and emission. The AlxGa1−xN films induce additional compressive strain on the underlying GaN film. Compositional inhomogeneities are present, but the fluctuations are too small to be important for carrier localisation. The broadening of the luminescence line width in the alloy can be described by statistical disorder of a random alloy.

scholarly journals Scaling of Fluorescence Stokes Shift and Superradiance Coherence Size in Disordered Molecular Aggregates

1999 ◽  
Vol 103 (49) ◽  
pp. 10294-10299 ◽  
Author(s):  
Vladimir Chernyak ◽  
Torsten Meier ◽  
Eugene Tsiper ◽  
Shaul Mukamel
Keyword(s):  
Stokes Shift ◽  
Molecular Aggregates
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