Optimization schemes for efficient multiple exciton generation and extraction in colloidal quantum dots
Damtie, Fikeraddis A. LU ; Karki, Khadga J. LU ; Pullerits, Tönu LU and Wacker, Andreas LU
(2016)
In Journal of Chemical Physics
145(6).
- Abstract
Multiple exciton generation (MEG) is a process in which more than one electron hole pair is generated per absorbed photon. It allows us to increase the efficiency of solar energy harvesting. Experimental studies have shown the multiple exciton generation yield of 1.2 in isolated colloidal quantum dots. However real photoelectric devices require the extraction of electron hole pairs to electric contacts. We provide a systematic study of the corresponding quantum coherent processes including extraction and injection and show that a proper design of extraction and injection rates enhances the yield significantly up to values around 1.6.
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/15694022-9c2d-4c85-94e6-041902b23b38
- author
- Damtie, Fikeraddis A.
LU
; Karki, Khadga J.
LU
; Pullerits, Tönu
LU
and Wacker, Andreas
LU
- organization
- publishing date
- 2016-08-14
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Journal of Chemical Physics
- volume
- 145
- issue
- 6
- article number
- 064703
- publisher
- American Institute of Physics (AIP)
- external identifiers
-
- scopus:84982113307
- wos:000381680300038
- ISSN
- 0021-9606
- DOI
- 10.1063/1.4960507
- language
- English
- LU publication?
- yes
- id
- 15694022-9c2d-4c85-94e6-041902b23b38
- alternative location
- http://scitation.aip.org/content/aip/journal/jcp/145/6/10.1063/1.4960507
- date added to LUP
- 2016-09-05 21:23:25
- date last changed
- 2023-09-11 23:29:12
@article{15694022-9c2d-4c85-94e6-041902b23b38,
abstract = {{<p>Multiple exciton generation (MEG) is a process in which more than one electron hole pair is generated per absorbed photon. It allows us to increase the efficiency of solar energy harvesting. Experimental studies have shown the multiple exciton generation yield of 1.2 in isolated colloidal quantum dots. However real photoelectric devices require the extraction of electron hole pairs to electric contacts. We provide a systematic study of the corresponding quantum coherent processes including extraction and injection and show that a proper design of extraction and injection rates enhances the yield significantly up to values around 1.6.</p>}},
author = {{Damtie, Fikeraddis A. and Karki, Khadga J. and Pullerits, Tönu and Wacker, Andreas}},
issn = {{0021-9606}},
language = {{eng}},
month = {{08}},
number = {{6}},
publisher = {{American Institute of Physics (AIP)}},
series = {{Journal of Chemical Physics}},
title = {{Optimization schemes for efficient multiple exciton generation and extraction in colloidal quantum dots}},
url = {{https://lup.lub.lu.se/search/files/21232021/damtie_JChemPhys2016.pdf}},
doi = {{10.1063/1.4960507}},
volume = {{145}},
year = {{2016}},
}