Temperature-dependent structural properties of P3HT films

Structural investigations of spin coated and drop cast poly(3-hexylthiophene) P3HT films have been performed under x-ray grazing incidence geometry. Drop cast films revealed to be highly oriented and crystalline and only slightly modify with the temperature. In contrast, spin coated films provided r...

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Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2010-11, Vol.14 (1), p.012007-8
Main Authors: Grigorian, S, Joshi, S, Pietsch, U
Format: Article
Language:English
Subjects:
Annealing
Coating
Crystal structure
Crystallinity
Low molecular weights
Molecular weight
Nanocrystals
Temperature dependence
X-rays
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Summary:Structural investigations of spin coated and drop cast poly(3-hexylthiophene) P3HT films have been performed under x-ray grazing incidence geometry. Drop cast films revealed to be highly oriented and crystalline and only slightly modify with the temperature. In contrast, spin coated films provided random orientational distribution of nanocrystallites and undergo significant morphological and structural changes during annealing. Interestingly, spin coated films of low and high molecular weight fractions behavior differently as a function of temperature. Crystalline domains of the low molecular weight fractions have been decreased, and, in contrast, we found an improvement of crystallinity of high molecular weight fraction with increase of the temperature.
ISSN:1757-899X
1757-8981
1757-899X
DOI:10.1088/1757-899X/14/1/012007