The influence of the drying process on electrochemical properties of P3HT/PCBM (1.00/0.25 wt%) electrodes

Author(s)

Marchesi, L. F. ^{[1, 2]} ; Pereira, E. C. ^[2]

Affiliation

^[1] Univ Tecnol Fed Parana, BR-84016210 Ponta Grossa, PR - Brazil

^[2] Univ Fed Sao Carlos, DQ UFSCar, Lab Mat Nanoestruturados Fabricados Eletroquim Na, BR-13565905 Sao Carlos, SP - Brazil

• Document type: Journal article
• Source: Synthetic Metals; v. 194, p. 82-87, AUG 2014.
• Web of Science Citations: 9

Abstract

The characterization of P3HT/PCBM thin films electrodes synthesized using different drying conditions is presented in this paper. P3HT/PCBM thin film was painted on ITO substrate from a composite solution and the solvent was dried slowly, at 30 degrees C for 12 h, or rapidly, at 100 degrees C for 10 min. Atomic force microscopy data shows the formation of fibrilar-like nanostructures for the films slowly dried, behavior not observed for the films rapidly dried. The distinct morphologies had an impact on the electrochemical properties, once these electrodes containing fibrilar-like nanostructures have exhibited a better conductivity, as showed by the cyclic voltammetry response. Besides, EIS data confirms such behavior, revealing that the calculated charge transfer resistance is one order of magnitude smaller for the films slowly dried than for those quickly dried. (C) 2014 Elsevier B.V. All rights reserved. (AU)

• FAPESP's process: 11/19865-6 - Study of the composite P3HT:PCBM properties as a function of the annealing temperature with impedance spectroscopy
• Grantee: Luís Fernando Quintino Pereira Marchesi
• Support Opportunities: Scholarships in Brazil - Post-Doctoral