RT Journal Article
T1 Low-temperature quenching of one-dimensional localized Frenkel excitons
A1 Malyshev, Andrey
A1 Domínguez-Adame Acosta, Francisco
AB We present a theoretical analysis of low-temperature quenching of one-dimensional Frenkel excitons that are localized by moderate on-site (diagonal) uncorrelated disorder. Exciton diffusion is considered as an incoherent hopping over localization segments and is probed by the exciton fluorescence quenching at point traps. The rate equation is used to calculate the temperature dependence of the exciton quenching. The activation temperature of the diffusion is found to be of the order of the width of the exciton absorption band. We demonstrate that the intra-segment scattering is extremely important for the exciton diffusion. We discuss also experimental data on the fast exciton-exciton annihilation in linear molecular aggregates at low temperatures.
PB Elsevier Science BV
SN 0009-2614
YR 2003
FD 2003-04-07
LK https://hdl.handle.net/20.500.14352/51260
UL https://hdl.handle.net/20.500.14352/51260
LA eng
NO © Elsevier Science B.V. All rights reserved.This work was supported by the DGI-MCyT (Project MAT2000-0734). A. V. M. and F. D. A. acknowledge support from CAM (Project 07N/0075/2001). V. A. M. acknowledges support from MECyD (Project SAB2000-0103) as well as through a  NATO Fellowship.
NO DGI-MCyT
NO CAM
NO MECyD
NO NATO
DS Docta Complutense
RD 4 abr 2025