New Anthracene‐Fused Nonfullerene Acceptors for High‐Efficiency Organic Solar Cells: Energy Level Modulations Enabling Match of Donor and Acceptor

AbstractNew materials and structures have been developed for efficient organic solar cells, dye-sensitized solar cells (DCSs) and organic thin-film solar cells (OPVs). Some strategies for achieving high photon-to-electricity conversion efficiency in these solar cells are discussed, focusing on nanostructured materials. In the case of DSCs, unlike TiO2 nanoparticles, TiO2 nanotubes with suitable dimensions are expected to work as efficient light scatterers as well as to give large surface areas for charge separation. A strategy for designing triarylamine-functionalized ruthenium dyes, which display the high efficiency, is also proposed. Furthermore, OPVs based on donor/acceptor (D/A) block copolymers are discussed, focusing on the phase separation of donor and acceptor segments and their domain sizes.

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High-efficiency non-fullerene organic solar cells enabled by a difluorobenzothiadiazole-based donor polymer combined with a properly matched small molecule acceptor

Energy & Environmental Science ◽

10.1039/c4ee02990a ◽

2015 ◽

Vol 8 (2) ◽

pp. 520-525 ◽

Cited By ~ 326

Author(s):

Jingbo Zhao ◽

Yunke Li ◽

Haoran Lin ◽

Yuhang Liu ◽

Kui Jiang ◽

...

Keyword(s):

Solar Cells ◽

Small Molecule ◽

Organic Solar Cells ◽

High Efficiency ◽

Power Conversion ◽

Donor And Acceptor ◽

Conversion Efficiencies ◽

Matched Donor

Non-fullerene organic solar cells with power conversion efficiencies of up to 6.3% are reported using properly matched donor and acceptor.

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Effects of energy-level offset between a donor and acceptor on the photovoltaic performance of non-fullerene organic solar cells

Journal of Materials Chemistry A ◽

10.1039/c9ta04789a ◽

2019 ◽

Vol 7 (32) ◽

pp. 18889-18897 ◽

Cited By ~ 27

Author(s):

Chenyi Yang ◽

Jianqi Zhang ◽

Ningning Liang ◽

Huifeng Yao ◽

Zhixiang Wei ◽

...

Keyword(s):

Solar Cells ◽

Energy Level ◽

Organic Solar Cells ◽

Photovoltaic Performance ◽

Donor And Acceptor

This work discussed the effect of energy-level offset on photovoltaic performance of PBDB-TF-based non-fullerene OSCs and established a correlation between them.

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A universal method for constructing high efficiency organic solar cells with stacked structures

Energy & Environmental Science ◽

10.1039/d0ee03490h ◽

2021 ◽

Author(s):

Yanan Wei ◽

Jianwei yu ◽

Linqing Qin ◽

Hao Chen ◽

Xiaoxi Wu ◽

...

Keyword(s):

Solar Cells ◽

Organic Solar Cells ◽

Industrial Production ◽

High Efficiency ◽

Universal Method ◽

Sequential Deposition ◽

Donor And Acceptor

Abstract: Constructing organic solar cells with stacked structures by sequential deposition (SD) of donor and acceptor film has great potential in industrial production, since it demonstrated little dependence on the...

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Single-Component Organic Solar Cells with Competitive Performance

Organic Materials ◽

10.1055/s-0041-1727234 ◽

2021 ◽

Vol 03 (02) ◽

pp. 228-244

Author(s):

Yakun He ◽

Ning Li ◽

Christoph J. Brabec

Keyword(s):

Solar Cells ◽

Organic Semiconductors ◽

Organic Solar Cells ◽

High Efficiency ◽

Photovoltaic Performance ◽

Polymeric Materials ◽

Single Component ◽

Molecular Architecture ◽

Chemical Structures ◽

Donor And Acceptor

Organic semiconductors with chemically linked donor and acceptor units can realize charge carrier generation, dissociation and transport within one molecular architecture. These covalently bonded chemical structures enable single-component organic solar cells (SCOSCs) most recently to start showing specific advantages over binary or multi-component bulk heterojunction concepts due to simplified device fabrication and a dramatically improved microstructure stability. The organic semiconductors used in SCOSCs can be divided into polymeric materials, that is, double-cable polymers, di-block copolymers as well as donor–acceptor small molecules. The nature of donor and acceptor segments, the length and flexibility of the connecting linker and the resultant nanophase separation morphology are the levers which allow optimizing the photovoltaic performance of SCOSCs. While remaining at 1–2% for over a decade, efficiencies of SCOSCs have recently witnessed significant improvement to over 6% for several materials systems and to a record efficiency of 8.4%. In this mini-review, we summarize the recent progress in developing SCOSCs towards high efficiency and stability, and analyze the potential directions for pushing SCOSCs to the next efficiency milestone.

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