Imperial College London
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DrKeithFraser

Faculty of Medicine, School of Public Health

Research Associate
 
 
 
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Contact

 

keith.fraser Website

 
 
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Location

 

School of Public HealthWhite City Campus

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Summary

 

Publications

Citation

BibTex format

@article{Paternò:2017:10.1038/srep41013,
author = {Paternò, GM and Robbiano, V and Fraser, KJ and Frost, C and García, Sakai V and Cacialli, F},
doi = {10.1038/srep41013},
journal = {Scientific Reports},
pages = {41013--41013},
title = {Neutron Radiation Tolerance of Two Benchmark Thiophene-Based Conjugated Polymers: the Importance of Crystallinity for Organic Avionics},
url = {http://dx.doi.org/10.1038/srep41013},
volume = {7},
year = {2017}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Aviation and space applications can benefit significantly from lightweight organic electronics, now spanning from displays to logics, because of the vital importance of minimising payload (size and mass). It is thus crucial to assess the damage caused to such materials by cosmic rays and neutrons, which pose a variety of hazards through atomic displacements following neutron-nucleus collisions. Here we report the first study of the neutron radiation tolerance of two poly(thiophene)s-based organic semiconductors: poly(3-hexylthiophene-2,5-diyl), P3HT, and the liquid-crystalline poly(2,5-bis (3-tetradecylthiophen-2-yl)thieno[3,2-b]thiophene), PBTTT. We combine spectroscopic investigations with characterisation of intrinsic charge mobility to show that PBTTT exhibits significantly higher tolerance than P3HT. We explain this in terms of a superior chemical, structural and conformational stability of PBTTT, which can be ascribed to its higher crystallinity, in turn induced by a combination of molecular design features. Our approach can be used to develop design strategies for better neutron radiation-tolerant materials, thus paving the way for organic semiconductors to enter avionics and space applications.
AU  - Paternò,GM
AU  - Robbiano,V
AU  - Fraser,KJ
AU  - Frost,C
AU  - García,Sakai V
AU  - Cacialli,F
DO  - 10.1038/srep41013
EP  - 41013
PY  - 2017///
SN  - 2045-2322
SP  - 41013
TI  - Neutron Radiation Tolerance of Two Benchmark Thiophene-Based Conjugated Polymers: the Importance of Crystallinity for Organic Avionics
T2  - Scientific Reports
UR  - http://dx.doi.org/10.1038/srep41013
UR  - http://hdl.handle.net/10044/1/56639
VL  - 7
ER  -
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