scholarly journals Role of quantum coherence and energetic disorder in exciton transport in polymer films

2006 ◽  
Vol 74 (7) ◽  
Author(s):  
William Barford ◽  
Christopher D. P. Duffy
Keyword(s):  
Polymer Films ◽  
Quantum Coherence ◽  
Exciton Transport ◽  
Energetic Disorder

scholarly journals Excitons in Carbonic Nanostructures

2019 ◽  
Vol 5 (4) ◽  
pp. 71 ◽  
Author(s):  
Alexander Demchenko
Keyword(s):  
Excited States ◽  
Quantum Coherence ◽  
Inorganic Carbon ◽  
Resonance Energy Transfer ◽  
Resonance Energy ◽  
Collective Excitations ◽  
Electronic Systems ◽  
Electronic Interactions ◽  
Exciton Transport

Unexpectedly bright photoluminescence emission can be observed in materials incorporating inorganic carbon when their size is reduced from macro–micro to nano. At present, there is no consensus in its understanding, and many suggested explanations are not consistent with the broad range of experimental data. In this Review, I discuss the possible role of collective excitations (excitons) generated by resonance electronic interactions among the chromophore elements within these nanoparticles. The Förster-type resonance energy transfer (FRET) mechanism of energy migration within nanoparticles operates when the composing fluorophores are the localized electronic systems interacting at a distance. Meanwhile, the resonance interactions among closely located fluorophores may lead to delocalization of the excited states over many molecules resulting in Frenkel excitons. The H-aggregate-type quantum coherence originating from strong coupling among the transition dipoles of adjacent chromophores in a co-facial stacking arrangement and exciton transport to emissive traps are the basis of the presented model. It can explain most of the hitherto known experimental observations and must stimulate the progress towards their versatile applications.

scholarly journals Correction: Evaluating the role of energetic disorder and thermal activation in exciton transport

2016 ◽  
Vol 4 (31) ◽  
pp. 7508-7508
Author(s):  
Thomas R. Fielitz ◽  
S. Matthew Menke ◽  
Russell J. Holmes
Keyword(s):  
Thermal Activation ◽  
Exciton Transport ◽  
Energetic Disorder

Correction for ‘Evaluating the role of energetic disorder and thermal activation in exciton transport’ by S. Matthew Menke et al., J. Mater. Chem. C, 2016, 4, 3437–3442.

Evaluating the role of energetic disorder and thermal activation in exciton transport

2016 ◽  
Vol 4 (16) ◽  
pp. 3437-3442 ◽  
Author(s):  
S. Matthew Menke ◽  
Russell J. Holmes
Keyword(s):  
Organic Semiconductors ◽  
Thermal Activation ◽  
Diffusion Length ◽  
Temperature Dependent ◽  
Exciton Diffusion ◽  
Exciton Diffusion Length ◽  
Exciton Transport ◽  
Energetic Disorder ◽  
Boron Subphthalocyanine

Temperature dependent measurements of the exciton diffusion length (LD) are performed for three archetypical small-molecule, organic semiconductors: aluminum tris-(8-hydroxyquinoline) (Alq3), dicyanovinyl-terthiophene (DCV3T), and boron subphthalocyanine chloride (SubPc).

Hybrid polymer films based ZnS nanocomposites and its optical and morphological properties: Monitoring the role of the binding-site interaction

2018 ◽  
Vol 98 ◽  
pp. 15-24 ◽  
Author(s):  
Guadalupe del C. Pizarro ◽  
Oscar G. Marambio ◽  
Manuel Jeria-Orell ◽  
Diego P. Oyarzún ◽  
Julio Sánchez
Keyword(s):  
Binding Site ◽  
Polymer Films ◽  
Morphological Properties ◽  
Hybrid Polymer

JAHN-TELLER EFFECT OF MOLECULAR COMPLEXES IN LIQUID SOLUTIONS

1994 ◽  
Vol 08 (21n22) ◽  
pp. 1319-1334 ◽  
Author(s):  
J.W. HALLEY ◽  
X.R. WANG
Keyword(s):  
Quantum Coherence ◽  
Berry Phase ◽  
Molecular Complexes ◽  
Liquid Solution ◽  
Teller Effect ◽  
Liquid Systems ◽  
Jahn Teller ◽  
Jahn Teller Effect ◽  
Molecular Dynamics Methods

We review recent work clarifying the sense in which the Jahn-Teller effect can exist in a molecular complex in liquid solution. We review the molecular dynamics methods for modeling such liquid systems using the cupric ion in aqueous solution as an example. We review the experimental evidence for the Jahn-Teller effect in liquids, emphasizing the importance of taking the time scale of the measurement into account. Finally we discuss the role of quantum coherence and the Berry phase in the Jahn-Teller effect.

How charges separate: correlating disorder, free energy, and open-circuit voltage in organic photovoltaics

2019 ◽  
Vol 216 ◽  
pp. 236-251 ◽  
Author(s):  
Débora P. Mroczek ◽  
Vladimir Lankevich ◽  
Eric R. Bittner
Keyword(s):  
Free Energy ◽  
Density Of States ◽  
Open Circuit Voltage ◽  
Open Circuit ◽  
Organic Polymer ◽  
Type Ii ◽  
Model Type ◽  
Polymer Photovoltaics ◽  
Energetic Disorder

In this paper, we discuss our recent efforts to correlate the role of density of states, entropy, and configurational and energetic disorder to the open-circuit voltage, VOC, of model type-II organic polymer photovoltaics.

scholarly journals The role of quantum coherence in non-equilibrium entropy production

2019 ◽  
Vol 5 (1) ◽  
Author(s):  
Jader P. Santos ◽  
Lucas C. Céleri ◽  
Gabriel T. Landi ◽  
Mauro Paternostro
Keyword(s):  
Entropy Production ◽  
Quantum Coherence ◽  
Non Equilibrium
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