Gradual Fluorination on the Phenyl Side Chains for Benzodithiophene-Based Linear Polymers to Improve the Photovoltaic Performance

2020 ◽  
Vol 12 (34) ◽  
pp. 38451-38459
Author(s):  
Peng Lei ◽  
Bao Zhang ◽  
You Chen ◽  
Yanfang Geng ◽  
Qingdao Zeng ◽  
...  
Keyword(s):  
Photovoltaic Performance ◽  
Side Chains ◽  
Linear Polymers

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.

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.

Influence of polymer side chains on the photovoltaic performance of non-fullerene organic solar cells

2017 ◽  
Vol 5 (4) ◽  
pp. 937-942 ◽  
Author(s):  
Xue Gong ◽  
Guangwu Li ◽  
Shiyu Feng ◽  
Liangliang Wu ◽  
Yahui Liu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Energy Level ◽  
Organic Solar Cells ◽  
Photovoltaic Performance ◽  
Great Influence ◽  
Molecular Packing ◽  
Side Chains ◽  
Blend Morphology

The side chains of polymers had a great influence on their molecular packing, energy level, blend morphology and photovoltaic performance. The PCEs of 7.28% and 1.55% were obtained for alkoxy and alkylthio-substituted polymer based non-fullerene solar cells, respectively.

Enhancement the photovoltaic performance of conjugated polymer based on simple head-to-head alkylthio side chains engineered bithiophene

2020 ◽  
Vol 31 (9) ◽  
pp. 2459-2464 ◽  
Author(s):  
Zuoji Liu ◽  
Chengjia Bao ◽  
Guangjun Zhang ◽  
Kai Zhang ◽  
Gangtie Lei ◽  
...  
Keyword(s):  
Conjugated Polymer ◽  
Photovoltaic Performance ◽  
Side Chains

scholarly journals An investigation of the role acceptor side chains play in the processibility and efficiency of organic solar cells fabricated from small molecular donors featuring 3,4-ethylenedioxythiophene cores

RSC Advances ◽  
2018 ◽  
Vol 8 (69) ◽  
pp. 39231-39240
Author(s):  
N. A. Mica ◽  
S. A. J. Almahmoud ◽  
L. Krishnan Jagadamma ◽  
G. Cooke ◽  
I. D. W. Samuel
Keyword(s):  
Solar Cells ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
Chemical Nature ◽  
Photovoltaic Performance ◽  
Side Chain ◽  
Side Chains ◽  
Acceptor Side

The chemical nature of the acceptor side chain plays an important role in the processability and photovoltaic performance of EDOT-based small molecule donors.

Effect of Non-fullerene Acceptors’ Side Chains on the Morphology and Photovoltaic Performance of Organic Solar Cells

2017 ◽  
Vol 9 (39) ◽  
pp. 33906-33912 ◽  
Author(s):  
Cai’e Zhang ◽  
Shiyu Feng ◽  
Yahui Liu ◽  
Ran Hou ◽  
Zhe Zhang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Photovoltaic Performance ◽  
Side Chains
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