Interface engineering in perylene diimide-based organic photovoltaics with enhanced photovoltage
File(s)Final_Manuscript_Accepted.docx (1.75 MB)
Accepted version
Author(s)
Type
Journal Article
Abstract
The introduction of nonfullerene acceptors (NFA) facilitated the realization of high-efficiency organic solar cells (OSCs); however, OSCs suffer from relatively large losses in open-circuit voltage (VOC) as compared to inorganic or perovskite solar cells. Further enhancement in power conversion efficiency requires an increase in VOC. In this work, we take advantage of the high dipole moment of twisted perylene-diimide (TPDI) as a nonfullerene acceptor (NFA) to enhance the VOC of OSCs. In multiple bulk heterojunction solar cells incorporating TPDI with three polymer donors (PTB7-Th, PM6 and PBDB-T), we observed a VOC enhancement by modifying the cathode with a polyethylenimine (PEIE) interlayer. We show that the dipolar interaction between the TPDI NFA and PEIE─enhanced by the general tendency of TPDI to form J-aggregates─plays a crucial role in reducing nonradiative voltage losses under a constant radiative limit of VOC. This is aided by comparative studies with PM6:Y6 bulk heterojunction solar cells. We hypothesize that incorporating NFAs with significant dipole moments is a feasible approach to improving the VOC of OSCs.
Date Issued
2023-05-31
Date Acceptance
2023-05-04
ISSN
1944-8244
Publisher
American Chemical Society
Start Page
25224
End Page
25231
Journal / Book Title
ACS Applied Materials and Interfaces
Volume
15
Issue
21
Copyright Statement
© 2023 American Chemical Society. This document is the Accepted Manuscript version of a Published Work that appeared in final form in
ACS Applied Materials and Interfaces, after peer review and technical editing by the publisher. To access the final edited and published work see https://pubs.acs.org/doi/10.1021/acsami.3c02003, see ACS Articles on Request https://pubs.acs.org/page/4authors/benefits/index.html#articles-request]
ACS Applied Materials and Interfaces, after peer review and technical editing by the publisher. To access the final edited and published work see https://pubs.acs.org/doi/10.1021/acsami.3c02003, see ACS Articles on Request https://pubs.acs.org/page/4authors/benefits/index.html#articles-request]
Identifier
https://pubs.acs.org/doi/10.1021/acsami.3c02003
https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:001014261500001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=a2bf6146997ec60c407a63945d4e92bb
Subjects
Science & Technology
Technology
Nanoscience & Nanotechnology
Materials Science, Multidisciplinary
Science & Technology - Other Topics
Materials Science
organic photovoltaics
dipolar interaction
perylene diimide
nonfullerene acceptors
interfaceengineering
OPEN-CIRCUIT VOLTAGE
NON-FULLERENE ACCEPTORS
SOLAR-CELLS
CHARGE GENERATION
EFFICIENCY
LOSSES
LAYER
dipolar interaction
interface engineering
nonfullerene acceptors
organic photovoltaics
perylene diimide
CHARGE GENERATION
dipolar interaction
EFFICIENCY
interfaceengineering
LAYER
LOSSES
Materials Science
Materials Science, Multidisciplinary
Nanoscience & Nanotechnology
nonfullerene acceptors
NON-FULLERENE ACCEPTORS
OPEN-CIRCUIT VOLTAGE
organic photovoltaics
perylene diimide
Science & Technology
Science & Technology - Other Topics
SOLAR-CELLS
Technology
03 Chemical Sciences
09 Engineering
Nanoscience & Nanotechnology
Publication Status
Published
Date Publish Online
2023-05-16