Poly(2,3-dihexylthieno[3,4-b]pyrazine-alt-2,3-dihexylquinoxaline): Processible, Low-Bandgap, Ambipolar-Acceptor Frameworks via Direct Arylation Polymerization

The synthesis of a new dialkyl-functionalized quinoxaline acceptor, 5,8-dibromo-2,3-dihexylquinoxaline, is reported, along with its cross-coupling with 2,3-dihexylthieno[3,4-b]pyrazine via direct arylation polymerization. The resulting ambipolar-acceptor polymer poly(2,3-dihexylthieno[3,4-b]pyrazine-alt-2,3-dihexylquinoxaline) exhibits a low bandgap of 1.07 eV and high solubility. The results of initial organic photovoltaic devices are also reported.

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Artificial light-harvesting n-type porphyrin for panchromatic organic photovoltaic devices

Chemical Science ◽

10.1039/c7sc01275f ◽

2017 ◽

Vol 8 (7) ◽

pp. 5095-5100 ◽

Cited By ~ 35

Author(s):

Wisnu Tantyo Hadmojo ◽

Dajeong Yim ◽

Havid Aqoma ◽

Du Yeol Ryu ◽

Tae Joo Shin ◽

...

Keyword(s):

Energy Loss ◽

Light Harvesting ◽

Photovoltaic Performance ◽

Low Energy ◽

Organic Photovoltaic ◽

Artificial Light ◽

Photovoltaic Devices ◽

Organic Photovoltaic Devices ◽

Low Bandgap ◽

Porphyrin Derivative

We developed a novel NIR-harvesting n-type porphyrin derivative, PDI–PZn–PDI, that shows a low bandgap of 1.27 eV. Panchromatic absorption was extended to the NIR area with a significantly low energy loss of 0.54 eV which led to promising photovoltaic performance.

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Donor–Acceptor-Type Low Bandgap Polymer Carrying Phenylazomethine Moiety as a Metal-Collecting Pendant Unit: Open-Circuit Voltage Modulation of Solution-Processed Organic Photovoltaic Devices Induced by Metal Complexation

ACS Macro Letters ◽

10.1021/mz3001379 ◽

2012 ◽

Vol 1 (6) ◽

pp. 667-671 ◽

Cited By ~ 6

Author(s):

Atsushi Kimoto ◽

Yusuke Tajima

Keyword(s):

Open Circuit Voltage ◽

Metal Complexation ◽

Open Circuit ◽

Organic Photovoltaic ◽

Photovoltaic Devices ◽

Organic Photovoltaic Devices ◽

Solution Processed ◽

Low Bandgap ◽

Donor Acceptor

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Low-bandgap push–pull molecules in polymer matrices for use in thin-film organic photovoltaic devices

Canadian Journal of Chemistry ◽

10.1139/cjc-2020-0081 ◽

2020 ◽

Vol 98 (9) ◽

pp. 564-574 ◽

Cited By ~ 1

Author(s):

Pierre-Louis M. Brunner ◽

Daniel Beaudoin ◽

Alice Heskia ◽

Thierry Maris ◽

Marc-André Dubois ◽

...

Keyword(s):

Thin Film ◽

Methyl Ester ◽

Acid Methyl Ester ◽

Electron Donors ◽

Organic Photovoltaic ◽

Photovoltaic Devices ◽

Organic Photovoltaic Devices ◽

Low Bandgap ◽

Acid Methyl ◽

Butyric Acid Methyl Ester

Conjugated polymers are widely used in thin-film organic photovoltaic devices to absorb light and serve as electron donors or acceptors. Small molecular analogues are attractive substitutes because they have fully defined structures, can be purified rigorously, and are typically more soluble and volatile. However, producing active films composed primarily of small molecules remains challenging. We have devised bulk heterojunction solar cells in which poly(3-hexylthiophene-2,5-diyl) and poly[[9-(1-octylnonyl)-9H-carbazole-2,7-diyl]-2,5-thiophenediyl-2,1,3-benzothiadiazole-4,7-diyl-2,5-thiophenediyl] are used as matrices to prepare films containing low-bandgap push–pull molecules as electron donors and (6,6)-phenyl-C61-butyric acid methyl ester or (6,6)-phenyl-C71-butyric acid methyl ester as electron acceptors. Compared with reference devices devoid of push–pull molecular additives, increases in power conversion efficiencies up to 30.4% were measured.

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