Electron extraction from excited quantum dots with higher order coulomb scattering
Kalaee, Alex Arash Sand LU and Wacker, Andreas LU
(2020)
In Journal of Physics Communications
4(3).
- Abstract
The electron kinetics in nanowire-based hot-carrier solar cells is studied, where both relaxation and extraction are considered concurrently. Our kinetics is formulated in the many-particle basis of the interacting system. Detailed comparison with simplified calculations based on product states shows that this includes the Coulomb interaction both in lowest and higher orders. While relaxation rates of 1 ps are obtained, if lowest order processes are available, timescales of tens of ps arise if these are not allowed for particular designs and initial conditions. Based on these calculations we quantify the second order effects and discuss the extraction efficiency, which remains low unless an energy filter by resonant tunnelling is... (More)
The electron kinetics in nanowire-based hot-carrier solar cells is studied, where both relaxation and extraction are considered concurrently. Our kinetics is formulated in the many-particle basis of the interacting system. Detailed comparison with simplified calculations based on product states shows that this includes the Coulomb interaction both in lowest and higher orders. While relaxation rates of 1 ps are obtained, if lowest order processes are available, timescales of tens of ps arise if these are not allowed for particular designs and initial conditions. Based on these calculations we quantify the second order effects and discuss the extraction efficiency, which remains low unless an energy filter by resonant tunnelling is applied.
(Less)
- author
- Kalaee, Alex Arash Sand
LU
and Wacker, Andreas
LU
- organization
- publishing date
- 2020-03-19
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Hot-carrier solar cells, Quantum kinetics, Thermalisation
- in
- Journal of Physics Communications
- volume
- 4
- issue
- 3
- article number
- 035011
- publisher
- IOP Publishing
- external identifiers
-
- scopus:85082871881
- ISSN
- 2399-6528
- DOI
- 10.1088/2399-6528/ab7e85
- language
- English
- LU publication?
- yes
- id
- 2b96d5d4-9f82-4900-859b-4aebb3d58d13
- date added to LUP
- 2020-04-24 15:01:09
- date last changed
- 2023-09-24 03:16:29
@article{2b96d5d4-9f82-4900-859b-4aebb3d58d13,
abstract = {{<p>The electron kinetics in nanowire-based hot-carrier solar cells is studied, where both relaxation and extraction are considered concurrently. Our kinetics is formulated in the many-particle basis of the interacting system. Detailed comparison with simplified calculations based on product states shows that this includes the Coulomb interaction both in lowest and higher orders. While relaxation rates of 1 ps are obtained, if lowest order processes are available, timescales of tens of ps arise if these are not allowed for particular designs and initial conditions. Based on these calculations we quantify the second order effects and discuss the extraction efficiency, which remains low unless an energy filter by resonant tunnelling is applied.</p>}},
author = {{Kalaee, Alex Arash Sand and Wacker, Andreas}},
issn = {{2399-6528}},
keywords = {{Hot-carrier solar cells; Quantum kinetics; Thermalisation}},
language = {{eng}},
month = {{03}},
number = {{3}},
publisher = {{IOP Publishing}},
series = {{Journal of Physics Communications}},
title = {{Electron extraction from excited quantum dots with higher order coulomb scattering}},
url = {{http://dx.doi.org/10.1088/2399-6528/ab7e85}},
doi = {{10.1088/2399-6528/ab7e85}},
volume = {{4}},
year = {{2020}},
}