π-Conjugated polymers with thermocleavable substituents for use as active layers in organic photovoltaics

2011 ◽  
Vol 2 (1) ◽  
pp. 175-180 ◽  
Author(s):  
Jaclyn L. Brusso ◽  
Mathilde R. Lilliedal ◽  
Steven Holdcroft
Keyword(s):  
Conjugated Polymers ◽  
Organic Photovoltaics ◽  
Active Layers

Understanding Batch-to-Batch Variations of Push-Pull Type Conjugated Polymers for Organic Photovoltaics

2019 ◽  
Author(s):  
Wouter Maes ◽  
Omar Beckers ◽  
Koen Vandewal ◽  
Pieter Verstappen
Keyword(s):  
Conjugated Polymers ◽  
Organic Photovoltaics

Conjugated polymers containing pyrimidine with electron withdrawing substituents for organic photovoltaics with high open-circuit voltage

Polymer ◽  
2016 ◽  
Vol 83 ◽  
pp. 50-58 ◽  
Author(s):  
Juae Kim ◽  
Jihoon Lee ◽  
Sangmin Chae ◽  
Joo Young Shim ◽  
Dal Yong Lee ◽  
...  
Keyword(s):  
Conjugated Polymers ◽  
Organic Photovoltaics ◽  
Open Circuit Voltage ◽  
Open Circuit ◽  
Electron Withdrawing Substituents

Dialkylthio benzo[1,2-b:4,5-b′]difuran polymer for efficient organic photovoltaics with solvent treatment in active layers

2016 ◽  
Vol 131 ◽  
pp. 356-363 ◽  
Author(s):  
Jiangsheng Yu ◽  
Guoping Luo ◽  
Linyi Bian ◽  
Baojing Zhou ◽  
Xinxing Yin ◽  
...  
Keyword(s):  
Organic Photovoltaics ◽  
Solvent Treatment ◽  
Active Layers

scholarly journals Side-chain conjugated polymers for use in the active layers of hybrid semiconducting polymer/quantum dot light emitting diodes

2016 ◽  
Vol 7 (1) ◽  
pp. 101-112 ◽  
Author(s):  
Ana Fokina ◽  
Yeonkyung Lee ◽  
Jun Hyuk Chang ◽  
Lydia Braun ◽  
Wan Ki Bae ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Conjugated Polymers ◽  
Light Emitting Diodes ◽  
Side Chain ◽  
Hybrid Polymer ◽  
Semiconducting Polymer ◽  
Light Emitting ◽  
Active Layers

Three monomers,M1–M3, with modified carbazole cores and styrene functionality were polymerized by RAFT. The polymers were then used in the active layers of hybrid polymer/quantum dot light emitting diodes.

Characterization of push-pull type of conjugated polymers containing 8H-thieno[2,3-b]indole for organic photovoltaics

2018 ◽  
Vol 245 ◽  
pp. 267-275 ◽  
Author(s):  
Juae Kim ◽  
Sangmin Chae ◽  
Ahra Yi ◽  
Seungyeon Hong ◽  
Hyo Jung Kim ◽  
...  
Keyword(s):  
Conjugated Polymers ◽  
Organic Photovoltaics

Light Directs Monomer Coordination in Catalyst-Free Grignard Photopolymerization

2021 ◽  
Author(s):  
Eliot Woods ◽  
Alexandra Berl ◽  
Leanna Kantt ◽  
Michael Wasielewski ◽  
Brandon E. Haines ◽  
...  
Keyword(s):  
Conjugated Polymers ◽  
Radical Anion ◽  
Elevated Temperatures ◽  
Spectroscopic Studies ◽  
Computational Investigation ◽  
Catalyst Free ◽  
Active Layers ◽  
End Groups ◽  
Type Coupling

π-Conjugated polymers can serve as active layers in flexible and lightweight electronics, and are conventionally synthesized by transition-metal-mediated polycondensation at elevated temperatures. We recently reported a photopolymerization of electron-deficient heteroaryl Grignard monomers that enables the catalyst-free synthesis of n-type π-conjugated polymers. Herein we provide an experimental and computational investigation of the mechanism of this photopolymerization. Spectroscopic studies performed <i>in situ</i> and after quenching reveal that the propagating species is a radical anion with halide end groups. DFT calculations for model oligomers suggest a Mg-templated S<sub>RN</sub>1-type coupling, in which Grignard monomer coordination to the radical anion chain avoids the formation of free sp<sup>2</sup> radicals and enables C–C bond formation with very low barriers. We find that light plays an unusual role in the reaction, photoexciting the radical anion chain to shift electron density to the termini and thus favor productive monomer binding.

Scattering Techniques for Mixed Donor-Acceptor Characterization in Organic Photovoltaics

2021 ◽  
Author(s):  
Thomas Chaney ◽  
Andrew Levin ◽  
Sebastian Schneider ◽  
Michael F. Toney
Keyword(s):  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Organic Photovoltaics ◽  
Bulk Heterojunction ◽  
Power Conversion ◽  
Organic Photovoltaic ◽  
Precise Control ◽  
Active Layers ◽  
Complex Morphology ◽  
Donor Acceptor

Precise control of the complex morphology of organic photovoltaic bulk heterojunction (BHJ) active layers remains an important yet challenging approach for improving power conversion efficiency. Of particular interest are the...

Understanding Batch-to-Batch Variations of Push-Pull Type Conjugated Polymers for Organic Photovoltaics

2019 ◽  
Author(s):  
Wouter Maes ◽  
Omar Beckers ◽  
Koen Vandewal ◽  
Pieter Verstappen
Keyword(s):  
Conjugated Polymers ◽  
Organic Photovoltaics
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