| Full text | |
| Author(s): |
Braunger, Maria L.
;
Alessio, Priscila
;
Furini, Leonardo N.
;
Constantino, Carlos J. L.
;
Olivati, Clarissa A.
Total Authors: 5
|
| Document type: | Journal article |
| Source: | Journal of Nanoscience and Nanotechnology; v. 17, n. 1, p. 460-466, JAN 2017. |
| Web of Science Citations: | 4 |
| Abstract | |
Thin films of regioregular polythiophene derivatives have had their optical, structural and morphological properties characterized, but there is still a lack of comparative studies to determine the effect from deposition techniques, especially on the electrical properties. In this study, we produced Langmuir-Schaefer and spin-coated films of regioregular alkyl-substituted polythiophene derivatives (P3AT) to investigate how distinct supramolecular arrangements can affect their properties. The Langmuir-Schaefer films deposited on indium-tin oxide substrates were observed to grow linearly with the number of layers, according to UV-visible absorption spectroscopy. Atomic force microscopy and Brewster angle microscopy were carried out for morphological characterization. From electrical transport measurements, the DC electrical conductivity of Langmuir-Schaefer films of P3AT was higher than the corresponding spin-coated films, which can be related to the dissimilar roughness and molecular-level organization provided by the Langmuir-Schaefer technique. (AU) | |
| FAPESP's process: | 10/20094-1 - Fabrication and electrical characterization of solar cells from organic thin films |
| Grantee: | Maria Luisa Braunger Fier |
| Support Opportunities: | Scholarships in Brazil - Doctorate |