π-Extension, Selenium Incorporation, and Trimerization: “Three in One” for Efficient Perylene Diimide Oligomer-Based Organic Solar Cells

ACS Applied Materials & Interfaces, Год журнала: 2020, Номер 12(8), С. 9528 - 9536

Опубликована: Фев. 3, 2020

Perylene diimide (PDI) and the vinylene-bridged helical PDI oligomers are versatile building blocks for constructing nonfullerene acceptors (NFAs). In this contribution, a benzene-cored star-shaped NFA, namely, TPDI2-Se, was designed synthesized organic solar cells (OSCs). The NFA with smaller π-conjugated blades, TPDI-Se, comparison. Using commercially available PTB7-Th as electron donor, best power conversion efficiency (PCE) of 3.62% obtained TPDI-Se-based OSCs. However, much higher PCE 8.59% achieved TPDI2-Se-based devices owing to π-extension in peripheral panels. Moreover, photovoltaic performance OSCs is also superior those parent TPDI2 (PCE 7.84%)- blade moiety PDI2-Se 6.61%)- based ones. Additionally, remarkable short-circuit current (Jsc) value 17.21 mA/cm2 OSCs, which among highest Jsc values reported PDI-based These results argue that so-called "three one" molecule design strategy π-extension, selenium incorporation, trimerization offers robust approach high-performance NFAs.

Язык: Английский

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Perylene diimide acceptor with two planar arms and a twisted core for high efficiency polymer solar cells

Dyes and Pigments, Год журнала: 2020, Номер 175, С. 108186 - 108186

Опубликована: Янв. 7, 2020

Язык: Английский

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PTB7 and PTB7-Th as universal polymers to evaluate materials development aspects of organic solar cells including interfacial layers, new fullerenes, and non-fullerene electron acceptors

Synthetic Metals, Год журнала: 2022, Номер 287, С. 117088 - 117088

Опубликована: Июнь 3, 2022

Язык: Английский

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Fusion or non-fusion of quasi-two-dimensional fused perylene diimide acceptors: the importance of molecular geometry for fullerene-free organic solar cells

Journal of Materials Chemistry A, Год журнала: 2019, Номер 7(48), С. 27493 - 27502

Опубликована: Янв. 1, 2019

Two small molecular electron acceptors (BT–FPDI and fBT–FPDI) with quasi-2D FPDI units were designed synthesized for efficient fullerene-free organic solar cells (OSCs), provide a new insight into the regulation of geometry.

Язык: Английский

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Excimer formation effects and trap-assisted charge recombination loss channels in organic solar cells of perylene diimide dimer acceptors

Journal of Materials Chemistry C, Год журнала: 2019, Номер 8(5), С. 1686 - 1696

Опубликована: Дек. 9, 2019

Perylene diimide (PDI) multiadducts reveal the endemic characteristics of PDI-based OPVs: (a) excimer activation and (b) trap-limited charge recombination losses.

Язык: Английский

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