High-Performance n-Type Polymer Semiconductors: Applications, Recent Development, and Challenges

Chem, Год журнала: 2020, Номер 6(6), С. 1310 - 1326

Опубликована: Июнь 1, 2020

Язык: Английский

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Controlling Molecular Mass of Low-Band-Gap Polymer Acceptors for High-Performance All-Polymer Solar Cells

Joule, Год журнала: 2020, Номер 4(5), С. 1070 - 1086

Опубликована: Апрель 16, 2020

Язык: Английский

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Random terpolymer based on thiophene-thiazolothiazole unit enabling efficient non-fullerene organic solar cells

Nature Communications, Год журнала: 2020, Номер 11(1)

Опубликована: Сен. 14, 2020

Abstract Developing a high-performance donor polymer is critical for achieving efficient non-fullerene organic solar cells (OSCs). Currently, most high-efficiency OSCs are based on named PM6, unfortunately, whose performance highly sensitive to its molecular weight and thus has significant batch-to-batch variations. Here we report (named PM1) random ternary polymerization strategy that enables with efficiencies reaching 17.6%. Importantly, the PM1 exhibits excellent reproducibility. By including 20% of weak electron-withdrawing thiophene-thiazolothiazole (TTz) into PM6 backbone, resulting (PM1) can maintain positive effects (such as downshifted energy level reduced miscibility) while minimize negative ones (including temperature-dependent aggregation property). With higher greater synthesis reproducibility, promise become work-horse material OSC community.

Язык: Английский

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16% efficiency all-polymer organic solar cells enabled by a finely tuned morphology via the design of ternary blend

Joule, Год журнала: 2021, Номер 5(4), С. 914 - 930

Опубликована: Март 7, 2021

Язык: Английский

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Recent progress in organic solar cells (Part II device engineering)

Science China Chemistry, Год журнала: 2022, Номер 65(8), С. 1457 - 1497

Опубликована: Май 26, 2022

Язык: Английский

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n-Type Molecular Photovoltaic Materials: Design Strategies and Device Applications

Journal of the American Chemical Society, Год журнала: 2020, Номер 142(27), С. 11613 - 11628

Опубликована: Май 27, 2020

The use of photovoltaic technologies has been regarded as a promising approach for converting solar energy to electricity and mitigating the crisis, among these, organic photovoltaics (OPVs) have attracted broad interest because their solution processability, flexibility, light weight, potential large-area processing. development OPV materials, especially electron acceptors, one focuses in recent years. Compared with fullerene derivates, n-type non-fullerene molecules some unique merits, such synthetic simplicity, high tunability absorption levels, small loss. In last 5 years, cells based on achieved significant breakthrough power conversion efficiency from approximately 4% over 17%, which is superior those fullerene-based cells; meanwhile, created brand new opportunities application OPVs special situations. This Perspective analyzes key design strategies high-performance molecular materials highlights instructive examples various applications, including ternary tandem cells, high-efficiency semitransparent power-generating building facades windows, indoor driving low-power-consumption devices. Moreover, accelerate pace toward commercialization OPVs, existing challenges future directions are also reviewed perspectives efficiency, stability, fabrication.

Язык: Английский

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Polymerized small molecular acceptor based all-polymer solar cells with an efficiency of 16.16% via tuning polymer blend morphology by molecular design

Nature Communications, Год журнала: 2021, Номер 12(1)

Опубликована: Сен. 6, 2021

Abstract All-polymer solar cells (all-PSCs) based on polymerized small molecular acceptors (PSMAs) have made significant progress recently. Here, we synthesize two A-DA’D-A molecule acceptor PSMAs of PS-Se with benzo[c][1,2,5]thiadiazole A’-core and PN-Se benzotriazole A’-core, for the studies effect structure photovoltaic performance PSMAs. The possess broad absorption showing more red-shifted than suitable electronic energy levels application as polymer in all-PSCs PBDB-T donor. Cryogenic transmission electron microscopy visualizes aggregation behavior donor PSMA their solutions. In addition, a bicontinuous-interpenetrating network PBDB-T:PN-Se blend film size 10~20 nm is clearly observed by photoinduced force microscopy. desirable morphology active layer leads its all-PSC higher power conversion efficiency 16.16%.

Язык: Английский

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Low-Bandgap Non-fullerene Acceptors Enabling High-Performance Organic Solar Cells

ACS Energy Letters, Год журнала: 2021, Номер 6(2), С. 598 - 608

Опубликована: Янв. 21, 2021

Great progress in organic solar cells (OSCs) has been recently achieved owing to the advent of non-fullerene acceptors (NFAs). Indeed, low-bandgap NFAs ranging from 1.3 1.6 eV with broad absorption and easily tunable energy levels can utilize more radiation maintain a small voltage loss when paired suitable donors. Efficient OSCs are dependent on good compatibility between donor acceptor materials, active layer morphology control, device engineering. In this review, we summarize some design synthesis strategies for NFAs, achieving low bandgap high power conversion efficiency. We also propose solutions toward innovative materials engineering advance development applications OSCs.

Язык: Английский

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Progress and prospects of the morphology of non-fullerene acceptor based high-efficiency organic solar cells

Energy & Environmental Science, Год журнала: 2021, Номер 14(8), С. 4341 - 4357

Опубликована: Янв. 1, 2021

This review summarizes the important morphological characteristics and recent research progress of non-fullerene acceptor based organic solar cells, as well provides insights perspectives on this topic.

Язык: Английский

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A Narrow‐Bandgap n‐Type Polymer with an Acceptor–Acceptor Backbone Enabling Efficient All‐Polymer Solar Cells

Advanced Materials, Год журнала: 2020, Номер 32(43)

Опубликована: Сен. 21, 2020

Narrow-bandgap polymer semiconductors are essential for advancing the development of organic solar cells. Here, a new narrow-bandgap acceptor L14, featuring an acceptor-acceptor (A-A) type backbone, is synthesized by copolymerizing dibrominated fused-ring electron (FREA) with distannylated bithiophene imide. Combining advantages both FREA and A-A polymer, L14 not only shows narrow bandgap high absorption coefficient, but also low-lying frontier molecular orbital (FMO) levels. Such FMO levels yield improved transfer character, unexpectedly, without sacrificing open-circuit voltage (Voc ), which attributed to small nonradiative recombination loss (Eloss,nr ) 0.22 eV. Benefiting from photocurrent along fill factor Voc , excellent efficiency 14.3% achieved, among highest values all-polymer cells (all-PSCs). The results demonstrate superiority polymers improving all-PSC performance pave way toward developing high-performance acceptors all-PSCs.

Язык: Английский

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