scholarly journals Graphene induced electrical percolation enables more efficient charge transport at a hybrid organic semiconductor/graphene interface

2018 ◽  
Vol 20 (6) ◽  
pp. 4422-4428 ◽  
Author(s):  
Nicolas Boulanger ◽  
Victor Yu ◽  
Michael Hilke ◽  
Michael F. Toney ◽  
David R. Barbero
Keyword(s):  
Charge Transport ◽  
Organic Semiconductor ◽  
Self Assembly ◽  
Carrier Mobility ◽  
Polymer Chains ◽  
Semiconducting Polymer ◽  
Electrical Percolation ◽  
Graphene Interface ◽  
Efficient Charge

Self-assembly of semiconducting polymer chains during crystallization reveals a percolation induced mechanism of charge transport on graphene, which enhances current and carrier mobility.

scholarly journals Experimental evidence that short-range intermolecular aggregation is sufficient for efficient charge transport in conjugated polymers

2015 ◽  
Vol 112 (34) ◽  
pp. 10599-10604 ◽  
Author(s):  
Suhao Wang ◽  
Simone Fabiano ◽  
Scott Himmelberger ◽  
Skomantas Puzinas ◽  
Xavier Crispin ◽  
...  
Keyword(s):  
Charge Transport ◽  
Carrier Mobility ◽  
High Mobility ◽  
Charge Carrier Mobility ◽  
Polymer Chains ◽  
Semiconducting Polymers ◽  
Local Order ◽  
Low Concentrations ◽  
Efficient Charge ◽  
Classic Approach

Efficiency, current throughput, and speed of electronic devices are to a great extent dictated by charge carrier mobility. The classic approach to impart high carrier mobility to polymeric semiconductors has often relied on the assumption that extensive order and crystallinity are needed. Recently, however, this assumption has been challenged, because high mobility has been reported for semiconducting polymers that exhibit a surprisingly low degree of order. Here, we show that semiconducting polymers can be confined into weakly ordered fibers within an inert polymer matrix without affecting their charge transport properties. In these conditions, the semiconducting polymer chains are inhibited from attaining long-range order in the π-stacking or alkyl-stacking directions, as demonstrated from the absence of significant X-ray diffraction intensity corresponding to these crystallographic directions, yet still remain extended along the backbone direction and aggregate on a local length scale. As a result, the polymer films maintain high mobility even at very low concentrations. Our findings provide a simple picture that clarifies the role of local order and connectivity of domains.

Dynamic processes in transient phases during self-assembly of organic semiconductor thin films

2021 ◽  
Author(s):  
Jing Wan ◽  
Yang Li ◽  
Jared Benson ◽  
Richards Miller ◽  
Mikhail Zhernenkov ◽  
...  
Keyword(s):  
Thin Films ◽  
Small Molecules ◽  
Organic Semiconductor ◽  
Self Assembly ◽  
Carrier Mobility ◽  
Electronic Devices ◽  
Dynamic Processes ◽  
Semiconductor Thin Films ◽  
Solution Proceeds ◽  
Transient Phases

Crystallization of organic semiconductor small molecules from solution proceeds in multiple steps. This study describes how asymmetric molecules lead to long-lived transient phases and their impact on carrier mobility for electronic devices.

scholarly journals Reduced crystallinity and enhanced charge transport by melt annealing of an organic semiconductor on single layer graphene

2016 ◽  
Vol 4 (19) ◽  
pp. 4143-4149 ◽  
Author(s):  
Vasyl Skrypnychuk ◽  
Nicolas Boulanger ◽  
Victor Yu ◽  
Michael Hilke ◽  
Michael F. Toney ◽  
...  
Keyword(s):  
Electrical Properties ◽  
Charge Transport ◽  
Organic Semiconductor ◽  
Annealing Temperature ◽  
Single Layer ◽  
Single Layer Graphene ◽  
Semiconducting Polymer ◽  
Layer Graphene ◽  
Melt Annealing

We report on the effect of the annealing temperature on the crystallization and the electrical properties of the semiconducting polymer poly(3-hexylthiophene) (P3HT) on single layer graphene.

Carbon Nanotube Wiring of Donor-Acceptor Nanograins by Self-Assembly and Efficient Charge Transport

2011 ◽  
Vol 123 (20) ◽  
pp. 4711-4715 ◽  
Author(s):  
Tomokazu Umeyama ◽  
Noriyasu Tezuka ◽  
Fumiaki Kawashima ◽  
Shu Seki ◽  
Yoshihiro Matano ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Charge Transport ◽  
Self Assembly ◽  
Efficient Charge ◽  
Donor Acceptor

Enhancing Crystalline Structural Orders of Polymer Semiconductors for Efficient Charge Transport via Polymer-Matrix-Mediated Molecular Self-Assembly

2016 ◽  
Vol 28 (31) ◽  
pp. 6687-6694 ◽  
Author(s):  
Yanlian Lei ◽  
Ping Deng ◽  
Ming Lin ◽  
Xuelin Zheng ◽  
Furong Zhu ◽  
...  
Keyword(s):  
Charge Transport ◽  
Polymer Matrix ◽  
Self Assembly ◽  
Polymer Semiconductors ◽  
Efficient Charge

Complementary Semiconducting Polymer Blends for Efficient Charge Transport

2015 ◽  
Vol 27 (20) ◽  
pp. 7164-7170 ◽  
Author(s):  
Yan Zhao ◽  
Xikang Zhao ◽  
Michael Roders ◽  
Ge Qu ◽  
Ying Diao ◽  
...  
Keyword(s):  
Polymer Blends ◽  
Charge Transport ◽  
Semiconducting Polymer ◽  
Efficient Charge

Carbon Nanotube Wiring of Donor-Acceptor Nanograins by Self-Assembly and Efficient Charge Transport

2011 ◽  
Vol 50 (20) ◽  
pp. 4615-4619 ◽  
Author(s):  
Tomokazu Umeyama ◽  
Noriyasu Tezuka ◽  
Fumiaki Kawashima ◽  
Shu Seki ◽  
Yoshihiro Matano ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Charge Transport ◽  
Self Assembly ◽  
Efficient Charge ◽  
Donor Acceptor

Effect of processing additive on morphology and charge extraction in bulk-heterojunction solar cells

2014 ◽  
Vol 2 (36) ◽  
pp. 15052-15057 ◽  
Author(s):  
Dong Hwan Wang ◽  
Pierre-Olivier Morin ◽  
Chang-Lyoul Lee ◽  
Aung Ko Ko Kyaw ◽  
Mario Leclerc ◽  
...  
Keyword(s):  
Charge Carrier ◽  
Charge Transport ◽  
Carrier Mobility ◽  
Series Resistance ◽  
Bulk Heterojunction ◽  
Charge Carrier Mobility ◽  
Electron Charge ◽  
Charge Generation ◽  
Heterojunction Solar Cells ◽  
Efficient Charge

The BHJ film fabricated with processing additive (DIO) exhibits improved phase-separated morphology and efficient charge generation as evidenced by decreased PL and the associated lifetime. The additive also leads to increased charge transport and decreased series resistance by means of the balanced hole and electron charge carrier mobility.

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