High photovoltaic performance of as-cast devices based on new quinoxaline-based donor–acceptor copolymers

2017 ◽  
Vol 8 (37) ◽  
pp. 5688-5697 ◽  
Author(s):  
Mingzhi Zhao ◽  
Zi Qiao ◽  
Xiaofeng Chen ◽  
Chenglin Jiang ◽  
Xiaoyu Li ◽  
...  
Keyword(s):  
Photovoltaic Performance ◽  
Side Chains ◽  
Donor Acceptor

Two new quinoxaline-based copolymers with different alkylthio side chains show high photovoltaic performance in as-cast devices.

Enhancing Phase Separation and Photovoltaic Performance of All-Conjugated Donor–Acceptor Block Copolymers with Semifluorinated Alkyl Side Chains

2015 ◽  
Vol 48 (21) ◽  
pp. 7851-7860 ◽  
Author(s):  
Florian Lombeck ◽  
Hartmut Komber ◽  
Alessandro Sepe ◽  
Richard H. Friend ◽  
Michael Sommer
Keyword(s):  
Phase Separation ◽  
Block Copolymers ◽  
Photovoltaic Performance ◽  
Side Chains ◽  
Alkyl Side Chains ◽  
Donor Acceptor

Benzotriazole-based donor–acceptor type semiconducting polymers with different alkyl side chains for photovoltaic devices

2013 ◽  
Vol 108 ◽  
pp. 113-125 ◽  
Author(s):  
Ji-Hoon Kim ◽  
Hee Un Kim ◽  
Chang Eun Song ◽  
In-Nam Kang ◽  
Jin-Kyun Lee ◽  
...  
Keyword(s):  
Semiconducting Polymers ◽  
Side Chains ◽  
Photovoltaic Devices ◽  
Alkyl Side Chains ◽  
Donor Acceptor

Synthesis and photovoltaic performance of donor-acceptor polymers containing benzo[1,2-b:4,5-b′]dithiophene with thienyl substituents

2013 ◽  
Vol 51 (12) ◽  
pp. 2622-2630 ◽  
Author(s):  
Prakash Sista ◽  
Ruvini S. Kularatne ◽  
Michael E. Mulholland ◽  
Mitchell Wilson ◽  
Natalie Holmes ◽  
...  
Keyword(s):  
Photovoltaic Performance ◽  
Donor Acceptor

A study of the thermoelectric properties of benzo[1,2-b:4,5-b′]dithiophene–based donor–acceptor conjugated polymers

2018 ◽  
Vol 9 (35) ◽  
pp. 4440-4447 ◽  
Author(s):  
Luhai Wang ◽  
Chengjun Pan ◽  
Zhongming Chen ◽  
Xiaoyan Zhou ◽  
Chunmei Gao ◽  
...  
Keyword(s):  
Conjugated Polymers ◽  
Thermoelectric Properties ◽  
Thermoelectric Materials ◽  
Side Chains ◽  
Organic Thermoelectric Materials ◽  
Donor Acceptor

Three benzo[1,2-b:4,5-b′]dithiophene (BDT)-based donor–acceptor (D–A) conjugated polymers with different side chains were designed, synthesized, and investigated as organic thermoelectric materials.

scholarly journals Effect of Side-Chain Variation on Single-Crystalline Structures for Revealing the Structure–Property Relationships of Organic Solar Cells

2020 ◽  
Vol 02 (01) ◽  
pp. 026-032
Author(s):  
Chen Yang ◽  
Liu Yuan ◽  
Ruimin Zhou ◽  
Zhen Wang ◽  
Jianqi Zhang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Single Crystal ◽  
Crystal Structures ◽  
Organic Solar Cells ◽  
Short Circuit ◽  
Photovoltaic Performance ◽  
Side Chains ◽  
Single Crystal Structures ◽  
Stacking Structure ◽  
Molecular Stacking

The molecular stacking assembly in the active layer plays a significant role in the photovoltaic performance of organic solar cells (OSCs). Here, we report two new small molecular donors with different side chains, FBT-O and FBT-H, and their corresponding fullerene-based OSCs. A slight change in the side chains led to a big difference in the power conversion efficiencies (PCEs). Although the molecular structures of the two donors are similar to each other, PCEs of the devices based on FBT-O were almost three times higher than those of the devices based on FBT-H, with manifold short-circuit current density, fill factor, as well as three orders of magnitude enhancement in the hole mobility. The difference in their single crystal structures was thoroughly investigated, whereby the FBT-O exhibited better planarity leading to appropriate phase separation and domain size. Furthermore, two-dimensional grazing-incidence wide-angle X-ray scattering results of the blend films revealed that the two donors retained a similar stacking structure as compared to the single-crystal structures, thus, establishing a clear relationship between the molecular stacking structure and the device performance.

scholarly journals All-small-molecule organic solar cells with over 14% efficiency by optimizing hierarchical morphologies

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Ruimin Zhou ◽  
Zhaoyan Jiang ◽  
Chen Yang ◽  
Jianwei Yu ◽  
Jirui Feng ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
High Performance ◽  
High Efficiency ◽  
Bulk Heterojunction ◽  
Photovoltaic Performance ◽  
Photovoltaic System ◽  
Active Layers ◽  
Donor Acceptor

AbstractThe high efficiency all-small-molecule organic solar cells (OSCs) normally require optimized morphology in their bulk heterojunction active layers. Herein, a small-molecule donor is designed and synthesized, and single-crystal structural analyses reveal its explicit molecular planarity and compact intermolecular packing. A promising narrow bandgap small-molecule with absorption edge of more than 930 nm along with our home-designed small molecule is selected as electron acceptors. To the best of our knowledge, the binary all-small-molecule OSCs achieve the highest efficiency of 14.34% by optimizing their hierarchical morphologies, in which the donor or acceptor rich domains with size up to ca. 70 nm, and the donor crystals of tens of nanometers, together with the donor-acceptor blending, are proved coexisting in the hierarchical large domain. All-small-molecule photovoltaic system shows its promising for high performance OSCs, and our study is likely to lead to insights in relations between bulk heterojunction structure and photovoltaic performance.

A polymer electron donor based on isoindigo units bearing branched oligo(ethylene glycol) side chains for polymer solar cells

2017 ◽  
Vol 8 (36) ◽  
pp. 5496-5503 ◽  
Author(s):  
Xingxing Chen ◽  
Zijian Zhang ◽  
Jun Liu ◽  
Lixiang Wang
Keyword(s):  
Solar Cells ◽  
Ethylene Glycol ◽  
Electron Donor ◽  
Polymer Solar Cells ◽  
Photovoltaic Performance ◽  
Side Chains

The oligo(ethylene glycol) side chains make the polymer donor exhibit good compatibility with PC71BM and consequently show good photovoltaic performance.

scholarly journals Thermal behaviour of dicarboxylic ester bithiophene polymers exhibiting a high open-circuit voltage

2018 ◽  
Vol 6 (14) ◽  
pp. 3731-3742 ◽  
Author(s):  
Ruurd Heuvel ◽  
Fallon J. M. Colberts ◽  
Martijn M. Wienk ◽  
René A. J. Janssen
Keyword(s):  
Solar Cells ◽  
Thermal Properties ◽  
Thermal Behaviour ◽  
Open Circuit Voltage ◽  
Photovoltaic Performance ◽  
Open Circuit ◽  
Side Chains ◽  
Open Circuit Voltages ◽  
Dicarboxylic Ester

Polythiophene derivatives with ester side chains enable high open-circuit voltages in polymer–fullerene solar cells. The side chains affect the solubility, thermal properties, tendency to aggregate, and photovoltaic performance by modulating the morphology of the blends.

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