Tailoring non-fullerene acceptors using selenium-incorporated heterocycles for organic solar cells with over 16% efficiency

Journal of Materials Chemistry A, Год журнала: 2020, Номер 8(45), С. 23756 - 23765

Опубликована: Янв. 1, 2020

The selenium substitution strategy was applied to develop two new A′-DAD-A′-type small molecular acceptors. resulting selenium-incorporated molecules exhibit red-shifted absorption and an enhanced photon response, leading high device efficiencies of over 16%.

Язык: Английский

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Deciphering the Role of Chalcogen-Containing Heterocycles in Nonfullerene Acceptors for Organic Solar Cells

ACS Energy Letters, Год журнала: 2020, Номер 5(11), С. 3415 - 3425

Опубликована: Окт. 15, 2020

The field of organic solar cells has experienced paradigm-shifting changes in recent years because the emergence nonfullerene acceptors (NFAs). It is critically important to gain more insight into structure–property relationship emerging A′-DAD-A′-type NFAs. In this Letter, a family NFAs named BPF-4F, BPT-4F, and BPS-4F incorporating various chalcogen-containing heterocycles, i.e., furan, thiophene, selenophene, respectively, was designed synthesized. These exhibited dramatic differences their photovoltaic performances with device efficiencies 16.8% achieved by thiophene-based cells, which much higher than furan-based ones (12.6%). addition, selenophene-based NFA showed red-shifted absorption relative furan- obtained decent efficiency 16.3% owing an improved JSC. reasons why these performed differently are systematically studied comparing optoelectronic properties film morphology, provides new understandings molecular design high-performance

Язык: Английский

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Recent Progress of Organic Photovoltaics with Efficiency over 17%

Energies, Год журнала: 2021, Номер 14(14), С. 4200 - 4200

Опубликована: Июль 12, 2021

The power conversion efficiency (PCE) of organic photovoltaics (OPVs) has exceeded 18% with narrow bandgap, non-fullerene materials Y6 or its derivatives when used as an electron acceptor. PCE improvement OPVs is due to strong photon harvesting in near-infrared light range and low energy loss. Meanwhile, ternary strategy commonly recognized a convenient efficient means improve the OPVs. In this review article, typical donor acceptor prepared are summarized. From device engineering perspective, research work on tandem structure introduced for understanding design selection preparing

Язык: Английский

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Recent progress of PM6:Y6-based high efficiency organic solar cells

Surfaces and Interfaces, Год журнала: 2021, Номер 23, С. 100921 - 100921

Опубликована: Янв. 10, 2021

Язык: Английский

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Naphthalenothiophene imide-based polymer exhibiting over 17% efficiency

Joule, Год журнала: 2021, Номер 5(4), С. 931 - 944

Опубликована: Март 7, 2021

Язык: Английский

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