Unification of polaron and soliton theories of exciton transport

1989 ◽  
Vol 40 (14) ◽  
pp. 9876-9887 ◽  
Author(s):  
David W. Brown ◽  
Zoran Ivić
Keyword(s):  
Exciton Transport

scholarly journals Efficient Interlayer Exciton Transport in Two-Dimensional Metal-Halide Perovskites.

2020 ◽  
Author(s):  
Alvaro J Magdaleno ◽  
Michael Seitz ◽  
Michel Frising ◽  
Ana Herranz de la Cruz ◽  
Antonio I. Fernández-Domínguez ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Charge Carrier ◽  
Carrier Transport ◽  
Energy Transport ◽  
Diffusion Length ◽  
Charge Carrier Transport ◽  
Two Dimensional ◽  
Exciton Transport ◽  
Halide Perovskites ◽  
Excitonic Energy

We present transient microscopy measurements of interlayer energy transport in (PEA)<sub>2</sub>PbI<sub>4</sub> perovskite. We find efficient interlayer exciton transport (0.06 cm<sup>2</sup>/s), which translates into a diffusion length that exceeds 100 nm and a sub-ps timescale for energy transfer. While still slower than in-plane exciton transport (0.2 cm<sup>2</sup>/s), our results show that excitonic energy transport is considerably less anisotropic than charge-carrier transport for 2D perovskites.

scholarly journals The optimization topography of exciton transport

2011 ◽  
Vol 96 (1) ◽  
pp. 10001 ◽  
Author(s):  
T. Scholak ◽  
T. Wellens ◽  
A. Buchleitner
Keyword(s):  
Exciton Transport

Quantum Dynamics of Exciton Transport and Dissociation in Multichromophoric Systems

2021 ◽  
Vol 72 (1) ◽  
pp. 591-616 ◽  
Author(s):  
Wjatscheslaw Popp ◽  
Dominik Brey ◽  
Robert Binder ◽  
Irene Burghardt
Keyword(s):  
Charge Transfer ◽  
Quantum Dynamics ◽  
Low Frequency ◽  
Functional Materials ◽  
Phonon Modes ◽  
Quantum Dynamical ◽  
Exciton Migration ◽  
Exciton Transport ◽  
Charge Transfer Excitons ◽  
Vibronic Couplings

Due to the subtle interplay of site-to-site electronic couplings, exciton delocalization, nonadiabatic effects, and vibronic couplings, quantum dynamical studies are needed to elucidate the details of ultrafast photoinduced energy and charge transfer events in organic multichromophoric systems. In this vein, we review an approach that combines first-principles parameterized lattice Hamiltonians with accurate quantum dynamical simulations using advanced multiconfigurational methods. Focusing on the elementary transfer steps in organic functional materials, we address coherent exciton migration and creation of charge transfer excitons in homopolymers, notably representative of the poly(3-hexylthiophene) material, as well as exciton dissociation at polymer:fullerene heterojunctions. We emphasize the role of coherent transfer, trapping effects due to high-frequency phonon modes, and thermal activation due to low-frequency soft modes that drive a diffusive dynamics.

Exciton transport in strained monolayer WSe2

2018 ◽  
Vol 113 (25) ◽  
pp. 252101 ◽  
Author(s):  
Darwin F. Cordovilla Leon ◽  
Zidong Li ◽  
Sung Woon Jang ◽  
Che-Hsuan Cheng ◽  
Parag B. Deotare
Keyword(s):  
Exciton Transport
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