Imperial College London
Alternate

ProfessorIainMcCulloch

Faculty of Natural Sciences, Department of Chemistry

Visiting Professor
 
 
 
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Contact

 

+44 (0)20 7594 5669i.mcculloch

 
 
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Location

 

Molecular Sciences Research HubWhite City Campus

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Summary

 

Publications

Citation

BibTex format

@article{Nikolka:2019:10.1038/s41467-019-10188-y,
author = {Nikolka, M and Broch, K and Armitage, J and Hanifi, D and Nowack, PJ and Venkateshvaran, D and Sadhanala, A and Saska, J and Mascal, M and Jung, S-H and Lee, J-K and McCulloch, I and Salleo, A and Sirringhaus, H},
doi = {10.1038/s41467-019-10188-y},
journal = {Nature Communications},
title = {High-mobility, trap-free charge transport in conjugated polymer diodes},
url = {http://dx.doi.org/10.1038/s41467-019-10188-y},
volume = {10},
year = {2019}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Charge transport in conjugated polymer semiconductors has traditionally been thought to be limited to a low-mobility regime by pronounced energetic disorder. Much progress has recently been made in advancing carrier mobilities in field-effect transistors through developing low-disorder conjugated polymers. However, in diodes these polymers have to date not shown much improved mobilities, presumably reflecting the fact that in diodes lower carrier concentrations are available to fill up residual tail states in the density of states. Here, we show that the bulk charge transport in low-disorder polymers is limited by water-induced trap states and that their concentration can be dramatically reduced through incorporating small molecular additives into the polymer film. Upon incorporation of the additives we achieve space-charge limited current characteristics that resemble molecular single crystals such as rubrene with high, trap-free SCLC mobilities up to 0.2 cm2/Vs and a width of the residual tail state distribution comparable to kBT.
AU  - Nikolka,M
AU  - Broch,K
AU  - Armitage,J
AU  - Hanifi,D
AU  - Nowack,PJ
AU  - Venkateshvaran,D
AU  - Sadhanala,A
AU  - Saska,J
AU  - Mascal,M
AU  - Jung,S-H
AU  - Lee,J-K
AU  - McCulloch,I
AU  - Salleo,A
AU  - Sirringhaus,H
DO  - 10.1038/s41467-019-10188-y
PY  - 2019///
SN  - 2041-1723
TI  - High-mobility, trap-free charge transport in conjugated polymer diodes
T2  - Nature Communications
UR  - http://dx.doi.org/10.1038/s41467-019-10188-y
UR  - https://www.ncbi.nlm.nih.gov/pubmed/31073179
UR  - http://hdl.handle.net/10044/1/70135
VL  - 10
ER  -
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