scholarly journals Energetic fluctuations in amorphous semiconducting polymers: Impact on charge-carrier mobility

2017 ◽  
Vol 147 (13) ◽  
pp. 134904 ◽  
Author(s):  
Sai Manoj Gali ◽  
Gabriele D’Avino ◽  
Philippe Aurel ◽  
Guangchao Han ◽  
Yuanping Yi ◽  
...  
Keyword(s):  
Charge Carrier ◽  
Carrier Mobility ◽  
Charge Carrier Mobility ◽  
Semiconducting Polymers

Light-Induced Change of Charge Carrier Mobility in Semiconducting Polymers

2008 ◽  
Vol 268 (1) ◽  
pp. 125-128 ◽  
Author(s):  
Martin Vala ◽  
Martin Weiter ◽  
Oldřich Zmeškal ◽  
Stanislav Nešpůrek ◽  
Petr Toman
Keyword(s):  
Charge Carrier ◽  
Carrier Mobility ◽  
Charge Carrier Mobility ◽  
Semiconducting Polymers

Charge carrier mobility in doped semiconducting polymers

2003 ◽  
Vol 82 (19) ◽  
pp. 3245-3247 ◽  
Author(s):  
V. I. Arkhipov ◽  
P. Heremans ◽  
E. V. Emelianova ◽  
G. J. Adriaenssens ◽  
H. Bässler
Keyword(s):  
Charge Carrier ◽  
Carrier Mobility ◽  
Charge Carrier Mobility ◽  
Semiconducting Polymers

Liquid-crystalline semiconducting polymers with high charge-carrier mobility

2006 ◽  
Vol 5 (4) ◽  
pp. 328-333 ◽  
Author(s):  
Iain McCulloch ◽  
Martin Heeney ◽  
Clare Bailey ◽  
Kristijonas Genevicius ◽  
Iain MacDonald ◽  
...  
Keyword(s):  
Charge Carrier ◽  
Carrier Mobility ◽  
Liquid Crystalline ◽  
Charge Carrier Mobility ◽  
Semiconducting Polymers ◽  
High Charge ◽  
High Charge Carrier Mobility

The Influence of Nitrogen Position on Charge Carrier Mobility in Enantiopure Aza[6]helicene Crystals

2018 ◽  
Author(s):  
Francesco Salerno ◽  
Beth Rice ◽  
Julia Schmidt ◽  
Matthew J. Fuchter ◽  
Jenny Nelson ◽  
...  
Keyword(s):  
Solid State ◽  
Charge Carrier ◽  
Carrier Mobility ◽  
Chemical Structure ◽  
Crystal Packing ◽  
Charge Carrier Mobility ◽  
Individual Factor ◽  
Charge Mobility ◽  
Order Of Magnitude ◽  
Small Change

<p>The properties of an organic semiconductor are dependent on both the chemical structure of the molecule involved, and how it is arranged in the solid-state. It is challenging to extract the influence of each individual factor, as small changes in the molecular structure often dramatically change the crystal packing and hence solid-state structure. Here, we use calculations to explore the influence of the nitrogen position on the charge mobility of a chiral organic molecule when the crystal packing is kept constant. The transfer integrals for a series of enantiopure aza[6]helicene crystals sharing the same packing were analysed in order to identify the best supramolecular motifs to promote charge carrier mobility. The regioisomers considered differ only in the positioning of the nitrogen atom in the aromatic scaffold. The simulations showed that even this small change in the chemical structure has a strong effect on the charge transport in the crystal, leading to differences in charge mobility of up to one order of magnitude. Some aza[6]helicene isomers that were packed interlocked with each other showed high HOMO-HOMO integrals (up to 70 meV), whilst molecules arranged with translational symmetry generally afforded the highest LUMO-LUMO integrals (40 - 70 meV). As many of the results are not intuitively obvious, a computational approach provides additional insight into the design of new semiconducting organic materials.</p>

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