Rationalizing the Influence of Tunable Energy Levels on Quantum Efficiency to Design Optimal Non-Fullerene Acceptor-Based Ternary Organic Solar Cells

Safakath Karuthedath; Sri H.K. Paleti; Anirudh Sharma; Hang Yin; Catherine S. Catherine; Si Chen; Han Xu; Nisreen Alshehri; Nicolas Ramos; Jafar I. Khan; Jaime Martin; Gang Li; Frédéric Laquai; Derya Baran; Julien Gorenflot

doi:10.1002/aenm.202203464

Rationalizing the Influence of Tunable Energy Levels on Quantum Efficiency to Design Optimal Non-Fullerene Acceptor-Based Ternary Organic Solar Cells

Safakath Karuthedath, Sri H.K. Paleti, Anirudh Sharma, Hang Yin, Catherine S. Catherine, Si Chen, Han Xu, Nisreen Alshehri, Nicolas Ramos, Jafar I. Khan, Jaime Martin, Gang Li, Frédéric Laquai, Derya Baran^*, Julien Gorenflot^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

Non-fullerene acceptor (NFA)-based ternary bulk heterojunction solar cells (TSC) are the most efficient organic solar cells (OSCs) today due to their broader absorption and quantum efficiencies (QE) often surpassing those of corresponding binary blends. The impact on QE of the energetics driving charge transfer at the electron donor:electron acceptor (D/A) interfaces is studied in blends of PBDB-T-2F donor with several pairs of lower bandgap NFAs. As in binary blends, the ionization energy offset between donor and acceptor (ΔIE) controls the QE and maximizes for ΔIE > 0.5 eV. However, ΔIE is not controlled by the individual NFAs IEs but by their average, weighted for their blending ratio. Using this property, the QE of a PBDB-T-2F:IEICO binary blend that has an insufficient ΔIE for charge generation is improved by adding a deep IE third component: IT-4F. Combining two NFAs enables to optimize the D/A energy alignment and cells’ QE without molecular engineering.

Original language	English (US)
Article number	2203464
Journal	Advanced Energy Materials
Volume	13
Issue number	16
DOIs	https://doi.org/10.1002/aenm.202203464
State	Published - Apr 26 2023

Keywords

ionization energy offset
organic photovoltaics
quantum efficiency
solar cell design rules
ternary solar cells

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
General Materials Science

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1002/aenm.202203464

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Karuthedath, S., Paleti, S. H. K., Sharma, A., Yin, H., Catherine, C. S., Chen, S., Xu, H., Alshehri, N., Ramos, N., Khan, J. I., Martin, J., Li, G., Laquai, F., Baran, D., & Gorenflot, J. (2023). Rationalizing the Influence of Tunable Energy Levels on Quantum Efficiency to Design Optimal Non-Fullerene Acceptor-Based Ternary Organic Solar Cells. Advanced Energy Materials, 13(16), Article 2203464. https://doi.org/10.1002/aenm.202203464

@article{766405a139464a0aa0e5f3cb883f7370,

title = "Rationalizing the Influence of Tunable Energy Levels on Quantum Efficiency to Design Optimal Non-Fullerene Acceptor-Based Ternary Organic Solar Cells",

abstract = "Non-fullerene acceptor (NFA)-based ternary bulk heterojunction solar cells (TSC) are the most efficient organic solar cells (OSCs) today due to their broader absorption and quantum efficiencies (QE) often surpassing those of corresponding binary blends. The impact on QE of the energetics driving charge transfer at the electron donor:electron acceptor (D/A) interfaces is studied in blends of PBDB-T-2F donor with several pairs of lower bandgap NFAs. As in binary blends, the ionization energy offset between donor and acceptor (ΔIE) controls the QE and maximizes for ΔIE > 0.5 eV. However, ΔIE is not controlled by the individual NFAs IEs but by their average, weighted for their blending ratio. Using this property, the QE of a PBDB-T-2F:IEICO binary blend that has an insufficient ΔIE for charge generation is improved by adding a deep IE third component: IT-4F. Combining two NFAs enables to optimize the D/A energy alignment and cells{\textquoteright} QE without molecular engineering.",

keywords = "ionization energy offset, organic photovoltaics, quantum efficiency, solar cell design rules, ternary solar cells",

author = "Safakath Karuthedath and Paleti, {Sri H.K.} and Anirudh Sharma and Hang Yin and Catherine, {Catherine S.} and Si Chen and Han Xu and Nisreen Alshehri and Nicolas Ramos and Khan, {Jafar I.} and Jaime Martin and Gang Li and Fr{\'e}d{\'e}ric Laquai and Derya Baran and Julien Gorenflot",

note = "Publisher Copyright: {\textcopyright} 2023 Wiley-VCH GmbH.",

year = "2023",

month = apr,

day = "26",

doi = "10.1002/aenm.202203464",

language = "English (US)",

volume = "13",

journal = "Advanced Energy Materials",

issn = "1614-6832",

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Karuthedath, S, Paleti, SHK, Sharma, A, Yin, H, Catherine, CS, Chen, S, Xu, H, Alshehri, N, Ramos, N, Khan, JI, Martin, J, Li, G, Laquai, F, Baran, D & Gorenflot, J 2023, 'Rationalizing the Influence of Tunable Energy Levels on Quantum Efficiency to Design Optimal Non-Fullerene Acceptor-Based Ternary Organic Solar Cells', Advanced Energy Materials, vol. 13, no. 16, 2203464. https://doi.org/10.1002/aenm.202203464

TY - JOUR

T1 - Rationalizing the Influence of Tunable Energy Levels on Quantum Efficiency to Design Optimal Non-Fullerene Acceptor-Based Ternary Organic Solar Cells

AU - Karuthedath, Safakath

AU - Paleti, Sri H.K.

AU - Sharma, Anirudh

AU - Yin, Hang

AU - Catherine, Catherine S.

AU - Chen, Si

AU - Xu, Han

AU - Alshehri, Nisreen

AU - Ramos, Nicolas

AU - Khan, Jafar I.

AU - Martin, Jaime

AU - Li, Gang

AU - Laquai, Frédéric

AU - Baran, Derya

AU - Gorenflot, Julien

PY - 2023/4/26

Y1 - 2023/4/26

N2 - Non-fullerene acceptor (NFA)-based ternary bulk heterojunction solar cells (TSC) are the most efficient organic solar cells (OSCs) today due to their broader absorption and quantum efficiencies (QE) often surpassing those of corresponding binary blends. The impact on QE of the energetics driving charge transfer at the electron donor:electron acceptor (D/A) interfaces is studied in blends of PBDB-T-2F donor with several pairs of lower bandgap NFAs. As in binary blends, the ionization energy offset between donor and acceptor (ΔIE) controls the QE and maximizes for ΔIE > 0.5 eV. However, ΔIE is not controlled by the individual NFAs IEs but by their average, weighted for their blending ratio. Using this property, the QE of a PBDB-T-2F:IEICO binary blend that has an insufficient ΔIE for charge generation is improved by adding a deep IE third component: IT-4F. Combining two NFAs enables to optimize the D/A energy alignment and cells’ QE without molecular engineering.

AB - Non-fullerene acceptor (NFA)-based ternary bulk heterojunction solar cells (TSC) are the most efficient organic solar cells (OSCs) today due to their broader absorption and quantum efficiencies (QE) often surpassing those of corresponding binary blends. The impact on QE of the energetics driving charge transfer at the electron donor:electron acceptor (D/A) interfaces is studied in blends of PBDB-T-2F donor with several pairs of lower bandgap NFAs. As in binary blends, the ionization energy offset between donor and acceptor (ΔIE) controls the QE and maximizes for ΔIE > 0.5 eV. However, ΔIE is not controlled by the individual NFAs IEs but by their average, weighted for their blending ratio. Using this property, the QE of a PBDB-T-2F:IEICO binary blend that has an insufficient ΔIE for charge generation is improved by adding a deep IE third component: IT-4F. Combining two NFAs enables to optimize the D/A energy alignment and cells’ QE without molecular engineering.

KW - ionization energy offset

KW - organic photovoltaics

KW - quantum efficiency

KW - solar cell design rules

KW - ternary solar cells

UR - http://www.scopus.com/inward/record.url?scp=85150490738&partnerID=8YFLogxK

U2 - 10.1002/aenm.202203464

DO - 10.1002/aenm.202203464

M3 - Article

AN - SCOPUS:85150490738

SN - 1614-6832

VL - 13

JO - Advanced Energy Materials

JF - Advanced Energy Materials

IS - 16

M1 - 2203464

ER -

Rationalizing the Influence of Tunable Energy Levels on Quantum Efficiency to Design Optimal Non-Fullerene Acceptor-Based Ternary Organic Solar Cells

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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