scholarly journals Regioregular narrow-bandgap-conjugated polymers for plastic electronics

2017 ◽  
Vol 8 (1) ◽  
Author(s):  
Lei Ying ◽  
Fei Huang ◽  
Guillermo C. Bazan
Keyword(s):  
Conjugated Polymers ◽  
Plastic Electronics ◽  
Narrow Bandgap

scholarly journals Development of a quantum chemical descriptor expressing aromatic/quinoidal character for designing narrow-bandgap π-conjugated polymers

2019 ◽  
Vol 10 (41) ◽  
pp. 5584-5593 ◽  
Author(s):  
Yoshihiro Hayashi ◽  
Susumu Kawauchi
Keyword(s):  
Conjugated Polymers ◽  
Quantum Chemical ◽  
Quantum Chemical Descriptor ◽  
Chemical Descriptor ◽  
Narrow Bandgap

Guidance for designing narrow-bandgap copolymers was established by developing a chemical descriptor (QSE) that considers only the monomer and linking sites.

Methoxylation of quinoidal bithiophene as a single regioisomer building block for narrow-bandgap conjugated polymers and high-performance organic field-effect transistors

2020 ◽  
Vol 8 (43) ◽  
pp. 15168-15174 ◽  
Author(s):  
Yunlong Sun ◽  
Yunpeng Zhang ◽  
Yang Ran ◽  
Longxian Shi ◽  
Qingsong Zhang ◽  
...  
Keyword(s):  
Conjugated Polymers ◽  
Building Block ◽  
Field Effect ◽  
High Performance ◽  
Field Effect Transistors ◽  
Hole Mobility ◽  
Methoxyl Group ◽  
Organic Field Effect Transistors ◽  
Narrow Bandgap

Methoxyl group was introduced to obtain isomer-free methoxylation quinoidal bithiophene building block. Four polymers displayed narrow bandgap (<1.20 eV) and hole mobility of up to 2.70 cm2 V−1 s−1.

scholarly journals Recent Development on Narrow Bandgap Conjugated Polymers for Polymer Solar Cells

Polymers ◽  
2017 ◽  
Vol 9 (12) ◽  
pp. 39 ◽  
Author(s):  
Yueyue Gao ◽  
Ming Liu ◽  
Yong Zhang ◽  
Zhitian Liu ◽  
Yulin Yang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Conjugated Polymers ◽  
Polymer Solar Cells ◽  
Narrow Bandgap

scholarly journals Effect of chiral 2-ethylhexyl side chains on chiroptical properties of the narrow bandgap conjugated polymers PCPDTBT and PCDTPT

2016 ◽  
Vol 7 (8) ◽  
pp. 5313-5321 ◽  
Author(s):  
Stephanie L. Fronk ◽  
Ming Wang ◽  
Michael Ford ◽  
Jessica Coughlin ◽  
Cheng-Kang Mai ◽  
...  
Keyword(s):  
Conjugated Polymers ◽  
Side Chains ◽  
Chiroptical Properties ◽  
Narrow Bandgap

PCPDTBT* and PCDTPT* containing chiral 2-ethylhexyl side chains were synthesized and their resulting chiroptical properties were studied. PCPDTBT* exhibits a stronger chiroptical response compared to PCDTPT*.

An ultra-narrow bandgap derived from thienoisoindigo polymers: structural influence on reducing the bandgap and self-organization

2016 ◽  
Vol 7 (5) ◽  
pp. 1181-1190 ◽  
Author(s):  
Tsukasa Hasegawa ◽  
Minoru Ashizawa ◽  
Junya Hiyoshi ◽  
Susumu Kawauchi ◽  
Jianguo Mei ◽  
...  
Keyword(s):  
Conjugated Polymers ◽  
Self Organization ◽  
Narrow Bandgap ◽  
Structural Influence

Six conjugated polymers based on thienoisoindigo (TII) and thiophene-flanked diketopyrrolopyrrole (TDPP) units bearing either branched-alkyl or siloxane-terminated alkyl solubilizing groups have been synthesized.

scholarly journals Charge delocalization characteristics of regioregular high mobility polymers

2017 ◽  
Vol 8 (2) ◽  
pp. 1146-1151 ◽  
Author(s):  
J. E. Coughlin ◽  
A. Zhugayevych ◽  
M. Wang ◽  
G. C. Bazan ◽  
S. Tretiak
Keyword(s):  
Density Functional Theory ◽  
Conjugated Polymers ◽  
Density Functional ◽  
High Mobility ◽  
Structural Units ◽  
Functional Theory ◽  
Charge Delocalization ◽  
Narrow Bandgap ◽  
The Family ◽  
Structural And Electronic Properties

Density Functional Theory modeling examines structural and electronic properties of charge states in the family of narrow bandgap conjugated polymers with controlled regioregularity among the structural units.

Influence of molecular structure on the performance of low Voc loss polymer solar cells

2016 ◽  
Vol 4 (39) ◽  
pp. 15232-15239 ◽  
Author(s):  
Ming Wang ◽  
Hengbin Wang ◽  
Michael Ford ◽  
Jianyu Yuan ◽  
Cheng-Kang Mai ◽  
...  
Keyword(s):  
Molecular Structure ◽  
Solar Cells ◽  
Conjugated Polymers ◽  
Polymer Solar Cells ◽  
Short Circuit ◽  
Short Circuit Current ◽  
Narrow Bandgap

Two regioregular narrow bandgap conjugated polymers (PM1 and PM2) are prepared and their devices exhibit low Voc loss and high short circuit current Jsc, but, most significantly, display improved fill factors compared to previously reported PIPCP.

Effect of carbon hybridization in 9H-fluorene unit on the photovoltaic properties of different fluorene-based conjugated polymers

2017 ◽  
Vol 30 (6) ◽  
pp. 677-687
Author(s):  
Zhiguan Lin ◽  
Gang Wei ◽  
Ling Li ◽  
Zhenhuan Lu ◽  
Jiefeng Hai ◽  
...  
Keyword(s):  
Conjugated Polymers ◽  
Polymer Solar Cells ◽  
Energy Levels ◽  
Photovoltaic Performance ◽  
Photovoltaic Properties ◽  
Absorption Energy ◽  
Narrow Bandgap ◽  
Donor Acceptor ◽  
Optical Bandgaps ◽  
Fine Tune

To investigate the effect of different carbon hybridization in 9H-fluorene on the resultant polymers, a series of donor–acceptor conjugated polymers have been synthesized by copolymerizing substituted 9H-fluorenes with triazoloquinoxaline. All polymers exhibit good solution-processability and broad absorption in 350–1000 nm region with narrow optical bandgaps ranging from 1.27 eV to 1.55 eV. The results indicate that fluorene functionalization via different carbon hybridization on 9-position could be an effective strategy to fine-tune the absorption, energy levels, and photovoltaic performance of the polymers. 9-Position sp2-hybridized carbon in fluorene could enhance absorption of ultraviolet-visible and form good morphology of blending layers, through its planar rigid structure. All polymer solar cells devices exhibited moderate performance with the best power conversion efficiency of 3.02% achieved based on P2. Compared to ladder-type multifused fluorene, carbon-hybridized 9H-fluorene units can be a very useful building block for constructing narrow bandgap polymers with facile synthesis, and even interesting optoelectronic properties.

Narrow bandgap conjugated polymers based on a high-mobility polymer template for visibly transparent photovoltaic devices

2016 ◽  
Vol 4 (44) ◽  
pp. 17333-17343 ◽  
Author(s):  
Jianyu Yuan ◽  
Michael Ford ◽  
Guanqun Ding ◽  
Huilong Dong ◽  
Ming Wang ◽  
...  
Keyword(s):  
Conjugated Polymers ◽  
Energy Levels ◽  
High Mobility ◽  
Optical Bandgap ◽  
Photovoltaic Devices ◽  
Narrow Bandgap ◽  
Photovoltaic Applications ◽  
Polymer Template

In this contribution, starting from a high mobility polymer P2 with a regioregular D–A–D–A structure, we set out to further optimize the optical bandgap and energy levels for photovoltaic applications.

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