Designing π-conjugated polymer blends with improved thermoelectric power factors

2019 ◽  
Vol 7 (34) ◽  
pp. 19774-19785 ◽  
Author(s):  
Ashkan Abtahi ◽  
Stephen Johnson ◽  
So Min Park ◽  
Xuyi Luo ◽  
Zhiming Liang ◽  
...  
Keyword(s):  
Conjugated Polymers ◽  
Polymer Blends ◽  
Charge Transport ◽  
Transport Properties ◽  
Thermoelectric Power ◽  
Conjugated Polymer

Blending two or more π-conjugated polymers together provides a means of manipulating charge transport properties and potentially improving the performance of organic thermoelectrics.

Correlating Charge Transport Properties of Conjugated Polymers in Solution Aggregates and Thin‐Film Aggregates

2021 ◽  
Author(s):  
Jian Pei ◽  
Zi-Yuan Wang ◽  
Lucia Di Virgilio ◽  
Ze-Fan Yao ◽  
Zi-Di Yu ◽  
...  
Keyword(s):  
Thin Film ◽  
Conjugated Polymers ◽  
Charge Transport ◽  
Transport Properties

scholarly journals Solvent-dependent self-assembly and ordering in slow-drying drop-cast conjugated polymer films

2015 ◽  
Vol 3 (38) ◽  
pp. 9842-9848 ◽  
Author(s):  
Kui Zhao ◽  
Xinhong Yu ◽  
Ruipeng Li ◽  
Aram Amassian ◽  
Yanchun Han
Keyword(s):  
Thin Films ◽  
Conjugated Polymers ◽  
Charge Transport ◽  
Polymer Films ◽  
Self Assembly ◽  
Conjugated Polymer ◽  
Optoelectronic Properties ◽  
Microstructure Development ◽  
Mechanistic Understanding ◽  
Semiconducting Thin Films

The mechanistic understanding of the intrinsic molecular self-assembly of conjugated polymers is of immense importance to control the microstructure development in organic semiconducting thin films, with a meaningful impact on charge transport and optoelectronic properties.

Effects of pyridyl group orientations on the optoelectronic properties of regio-isomeric diketopyrrolopyrrole based π-conjugated polymers

2016 ◽  
Vol 4 (13) ◽  
pp. 2470-2479 ◽  
Author(s):  
Jing Yue ◽  
Sheng Sun ◽  
Junfei Liang ◽  
Wenkai Zhong ◽  
Linfeng Lan ◽  
...  
Keyword(s):  
Conjugated Polymers ◽  
Charge Transport ◽  
Transport Properties ◽  
Molecular Geometry ◽  
Optoelectronic Properties ◽  
Pyridyl Group

The orientation of the N-atom in the pyridyl groups shows pronounced effects on the molecular geometry and charge transport properties.

Highly planar cross-conjugated alternating polymers with multiple conformational locks: synthesis, characterization and their field-effect properties

2016 ◽  
Vol 4 (39) ◽  
pp. 9266-9275 ◽  
Author(s):  
Weifeng Zhang ◽  
Zupan Mao ◽  
Naihang Zheng ◽  
Jiabin Zou ◽  
Liping Wang ◽  
...  
Keyword(s):  
Conjugated Polymers ◽  
Charge Transport ◽  
Transport Properties ◽  
Field Effect

Two highly planar cross-conjugated polymers with multiple conformational locks were designed and synthesized, and their charge transport properties were investigated.

Sequential Fluorination on Napthaleneamide-Based Conjugated Polymers and Their Impact on Charge Transport Properties

2018 ◽  
Vol 51 (15) ◽  
pp. 5530-5536 ◽  
Author(s):  
Kakaraparthi Kranthiraja ◽  
Dang Xuan Long ◽  
Vijaya Gopalan Sree ◽  
Woosum Cho ◽  
Young-Rae Cho ◽  
...  
Keyword(s):  
Conjugated Polymers ◽  
Charge Transport ◽  
Transport Properties

Ion Gel Dynamic Templates for Large Modulation of Morphology and Charge Transport Properties of Solution-Coated Conjugated Polymer Thin Films

2019 ◽  
Vol 11 (25) ◽  
pp. 22561-22574 ◽  
Author(s):  
Erfan Mohammadi ◽  
Chuankai Zhao ◽  
Fengjiao Zhang ◽  
Ge Qu ◽  
Seok-Heon Jung ◽  
...  
Keyword(s):  
Thin Films ◽  
Charge Transport ◽  
Transport Properties ◽  
Conjugated Polymer ◽  
Polymer Thin Films ◽  
Ion Gel

scholarly journals Linking Glass‐Transition Behavior to Photophysical and Charge Transport Properties of High‐Mobility Conjugated Polymers

2020 ◽  
pp. 2007359
Author(s):  
Mingfei Xiao ◽  
Aditya Sadhanala ◽  
Mojtaba Abdi‐Jalebi ◽  
Tudor H. Thomas ◽  
Xinglong Ren ◽  
...  
Keyword(s):  
Glass Transition ◽  
Conjugated Polymers ◽  
Charge Transport ◽  
Transport Properties ◽  
High Mobility ◽  
Transition Behavior

scholarly journals Aggregation control in natural brush-printed conjugated polymer films and implications for enhancing charge transport

2017 ◽  
Vol 114 (47) ◽  
pp. E10066-E10073 ◽  
Author(s):  
Gang Wang ◽  
Wei Huang ◽  
Nicholas D. Eastham ◽  
Simone Fabiano ◽  
Eric F. Manley ◽  
...  
Keyword(s):  
Conjugated Polymers ◽  
Charge Transport ◽  
Conjugated Polymer ◽  
Processing Technique ◽  
Large Area ◽  
Hole Transporting ◽  
Degree Of Orientation ◽  
Aggregation Control ◽  
Induced Aggregation ◽  
Low Crystallinity

Shear-printing is a promising processing technique in organic electronics for microstructure/charge transport modification and large-area film fabrication. Nevertheless, the mechanism by which shear-printing can enhance charge transport is not well-understood. In this study, a printing method using natural brushes is adopted as an informative tool to realize direct aggregation control of conjugated polymers and to investigate the interplay between printing parameters, macromolecule backbone alignment and aggregation, and charge transport anisotropy in a conjugated polymer series differing in architecture and electronic structure. This series includes (i) semicrystalline hole-transporting P3HT, (ii) semicrystalline electron-transporting N2200, (iii) low-crystallinity hole-transporting PBDTT-FTTE, and (iv) low-crystallinity conducting PEDOT:PSS. The (semi-)conducting films are characterized by a battery of morphology and microstructure analysis techniques and by charge transport measurements. We report that remarkably enhanced mobilities/conductivities, as high as 5.7×/3.9×, are achieved by controlled growth of nanofibril aggregates and by backbone alignment, with the adjusted R2 (R2adj) correlation between aggregation and charge transport as high as 95%. However, while shear-induced aggregation is important for enhancing charge transport, backbone alignment alone does not guarantee charge transport anisotropy. The correlations between efficient charge transport and aggregation are clearly shown, while mobility and degree of orientation are not always well-correlated. These observations provide insights into macroscopic charge transport mechanisms in conjugated polymers and suggest guidelines for optimization.

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