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Toward More Efficient Organic Solar Cells: A Detailed Study of Loss Pathway and Its Impact on Overall Device Performance in Low‐Offset Organic Solar Cells
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Nurlan Tokmoldin,
Obaid Alqahtani ,
Acacia Patterson,
Catherine De Castro ,
Drew Riley,
Manasi Pranav ,
Ardalan Armin ,
Frédéric Laquai ,
Brian A. Collins ,
Dieter Neher,
Safa Shoaee
Advanced Energy Materials, Volume: 13, Issue: 26
Swansea University Authors:
Catherine De Castro , Drew Riley, Ardalan Armin
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DOI (Published version): 10.1002/aenm.202300980
Abstract
Low-offset organic solar cell systems have attracted great interest since nonfullerene acceptors came into the picture. While numerous studies have focused on the charge generation process in these low-offset systems, only a few studies have focused on the details of each loss channel in the charge...
| Published in: | Advanced Energy Materials |
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| ISSN: | 1614-6832 1614-6840 |
| Published: |
Wiley
2023
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| Online Access: |
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa63937 |
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| Abstract: |
Low-offset organic solar cell systems have attracted great interest since nonfullerene acceptors came into the picture. While numerous studies have focused on the charge generation process in these low-offset systems, only a few studies have focused on the details of each loss channel in the charge generation process and their impact on the overall device performance. Here, several nonfullerene acceptors are blended with the same polymer donor to form a series of low-offset organic solar cell systems where significant variation in device performance is observed. Through detailed analyses of loss pathways, it is found that: i) the donor:acceptor interfaces of PM6:Y6 and PM6:TPT10 are close to the optimum energetic condition, ii) energetics at the donor:acceptor interface are the most important factor to the overall device performance, iii) exciton dissociation yield can be field-dependent owing to the sufficiently small energetic offset at the donor:acceptor interface, and iv) the change in substituents in the terminal group of Y-series acceptors in this work mainly affects energetics at the donor:acceptor interface instead of the interface density in the active layer. In general, this work presents a path toward more efficient organic solar cells. |
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| College: |
Faculty of Science and Engineering |
| Funders: |
Deutsche Forschungsgemeinschaft. Grant Number: 450968074
Extraordinaire. Grant Number: 460766640
U.S. Department of Energy Early Career Research Program. Grant Number: DE-SC0017923
DOE Office of Science User facility. Grant Numbers: DE-AC02-05CH11231, Beamline 7-ID-1
Brookhaven National Laboratory. Grant Number: DESC0012704
KAUST Office of Sponsored Research. Grant Number: ORFS-CRG7-2019-4025
European Regional Development Fund
Natural Sciences and Engineering Research Council of Canada. Grant Number: PGSD3-545694-2020
Open access funding enabled and organized by Projekt DEAL. |
| Issue: |
26 |