Molecular engineering of perylene-diimide-based polymer acceptors containing heteroacene units for all-polymer solar cells

Suranagi, Sanjaykumar R.; Singh, Ranbir; Kim, Joohyun; Kim, Min; Ade, Harald; Cho, Kilwon

doi:10.1016/j.orgel.2018.02.015

Cited by 15 publications

(13 citation statements)

References 47 publications

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“…As a result, an all‐PSC based on D14 : A23 showed a PCE of 4.47 %, which was approximately 2‐fold larger than that of D14 : A17 based ones (PCE of 2.70 %). Three symmetrical S‐heteroacene backbone units of different sizes were incorporated into PDI‐based polymers to afford A14 , A16 , and A24 by Cho and co‐workers in 2018 . The lowest unoccupied molecular orbital levels of A14 , A16 , and A24 were measured to be −3.78, −3.70, and −3.62 eV, respectively.…”

Section: Pdi‐based Polymers As Nfas In All‐pscsmentioning

confidence: 99%

Perylene Diimide‐Based Conjugated Polymers for All‐Polymer Solar Cells

Shi

et al. 2020

Chemistry A European J

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In recent decades, non-fullerenea cceptors (NFAs) are undergoing rapid development and emerging asahot area in the field of organic solar cells. Amongt he high-performance non-fullerene acceptors, aromatic diimide-based electron acceptors remain to be highly promising systems. This review discusses the important progress of perylene dii-mide (PDI)-based polymers as non-fullerenea cceptors in allpolymer solar cells(all-PSCs)s ince 2014. The relationship between structure andp roperty,m atching aspects between donors and acceptors, and device fabrications are unveiled from as ynthetic chemist perspective.

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Section: Pdi‐based Polymers As Nfas In All‐pscsmentioning

confidence: 99%

Perylene Diimide‐Based Conjugated Polymers for All‐Polymer Solar Cells

Shi

et al. 2020

Chemistry A European J

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“…This (010) diffraction peak, weakly appearing only in the out-of-plane direction, indicates that the π–π stacking chains were face-on oriented on the substrate. The diffraction profile also contained a (100) lamella stacking peak at q xy = 2.81 nm –1 ( d = 2.24 nm and L c = 3.57 nm) and another peak at q xy = 5.10 nm –1 ( d = 1.23 nm and L c = 2.54 nm), which might be related to the diffraction along the (001) polymer backbone direction . The number of stacked P(PDI-2T) chains was 2–3, which is much smaller than that of P(NDI2OD-2FT).…”

Section: Resultsmentioning

confidence: 96%

“…The diffraction profile also contained a (100) lamella stacking peak at q xy = 2.81 nm −1 (d = 2.24 nm and L c = 3.57 nm) and another peak at q xy = 5.10 nm −1 (d = 1.23 nm and L c = 2.54 nm), which might be related to the diffraction along the (001) polymer backbone direction. 45 The number of stacked P(PDI-2T) chains was 2−3, which is much smaller than that of P(NDI2OD-2FT). The absence of dense chain packing in the P(PDI-2T) film was possibly due to the poor backbone planarity, which was caused by the highly twisted configuration between PDI and the adjacent thiophene in a PDI− bithiophene monomer unit (dihedral angle of 59°) and between thiophenes in a bithiophene unit (dihedral angle of 30°), as calculated by applying the geometry optimization in density functional theory.…”

Section: ■ Introductionmentioning

confidence: 93%

Electron Transport in Thin Films of Polymer and Small-Molecule Acceptors Visualized by Conductive Atomic Force Microscopy

et al. 2021

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In this study, spatial variations in electron transport in thin films of perylene diimide (PDI)- and naphthalene diimide (NDI)-based acceptors and [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) were characterized by conductive atomic force microscopy. Electron flow images at the nanometer scale revealed that electron transport was spatially inhomogeneous in the PDI- and NDI-based polymer acceptor films, with the formation of good conducting regions with sizes of several tens of nanometers to 200 nm. In contrast, it was relatively uniform in the PDI-based small-molecule acceptor and PCBM films. The local electron currents flowing through the good conducting region of the NDI-based polymer film were higher in magnitude than those flowing in the PCBM film as a consequence of the local ordering of the polymer chains. This suggests that the electron mobility can be further improved via morphological optimizations. Conversely, electron transport was inherently inhibited in the PDI-based polymer and small-molecule acceptor films because of a loose interchain (intermolecular) π–π stacking because of the twisted intrachain (intramolecular) structures. Nanoscale observation of the local electron currents provides insights into the electron transport-related performance limitations of the nonfullerene acceptor filmsa feature that cannot be estimated via macroscopic current–voltage measurements.

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“…Solution-processedo rganic photovoltaic (OPV)d evices are promisingc andidates for harvesting solare nergyf or future energy supply scenarios becauseo ft he low mass, flexibility, large-areac overage, low manufacturingc osts, and environmental friendliness of all of their components. [1][2][3][4][5][6] Also, compatibility with roll-to-roll printingt echnology makes the solution-processed organic materials more attractive for the versatile and scalable use of technology.I nt he last few years, the power conversione fficiencies (PCEs) of OPV devices under one-sun conditions have increased by over 13 %. [7][8][9][10] This improvement has been due in part to the incorporation of multiple components into the photoactive layers.…”

Section: Introductionmentioning

confidence: 99%

“…Solution‐processed organic photovoltaic (OPV) devices are promising candidates for harvesting solar energy for future energy supply scenarios because of the low mass, flexibility, large‐area coverage, low manufacturing costs, and environmental friendliness of all of their components . Also, compatibility with roll‐to‐roll printing technology makes the solution‐processed organic materials more attractive for the versatile and scalable use of technology.…”

Section: Introductionmentioning

confidence: 99%

Ternary Blend Strategy for Achieving High‐Efficiency Organic Photovoltaic Devices for Indoor Applications

Singh

Shin

Lee

et al. 2019

Chemistry A European J

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Monomeric perylene diimide( PDI) small molecules display ah igh absorption coefficienta nd crystallinity in solid-state thin films due to strong p-p interactions between the molecules. To takea dvantage of these exciting properties of PDIs, N,N'-bis(1-ethylpropyl)perylene-3,4,9,10-tetracarboxylic diimide( EP-PDI) was mixed with ab inary blend of PTB7 andP C 71 BM to fabricate an efficient ternary blend, which were in turn used to produce organic photovoltaic (OPV) devices wells uited to indoora pplications, PC 71 BM = [6,6]-phenyl-C 71 -butyric acid methyle ster). We varied the PC 71 BM/EP-PDI weight ratio to investigate the influence of EP-PDIo nt he optical, electrical, and morphological properties of the PTB7:PC 71 BM:EP-PDI ternary blend. Compared with the reference PTB7:PC 71 BM binaryb lend, the ternary blends showed strong optical absorptioni nt he wavelength range in whicht he spectra of indoorL ED lamps show their strongestp eaks. The addition of EP-PDIt ot he binary blend was found to play an important role in altering the morphologyo ft he blend in such a way as to facilitate charget ransport in the resulting ternary blend.A pparently,a saresult, the optimal PTB7:PC 71 BM:EP-PDI-based inverted OPV device exhibited ap ower conversion efficiency (PCE) of 15.68 %, af ill factor( FF) of 68.5 %, and short-circuit current density (J SC )o f56.7 mAcm À2 under 500 lx (ca. 0.17 mW cm À2 )i ndoor LED light conditions.Supporting information and the ORCID identification number(s) for the author(s) of this article can be found under: https://doi.

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Molecular engineering of perylene-diimide-based polymer acceptors containing heteroacene units for all-polymer solar cells

Cited by 15 publications

References 47 publications

Perylene Diimide‐Based Conjugated Polymers for All‐Polymer Solar Cells

Perylene Diimide‐Based Conjugated Polymers for All‐Polymer Solar Cells

Electron Transport in Thin Films of Polymer and Small-Molecule Acceptors Visualized by Conductive Atomic Force Microscopy

Ternary Blend Strategy for Achieving High‐Efficiency Organic Photovoltaic Devices for Indoor Applications

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