Alkyl Thiophene Vinylene Electropolimerization in C&amp;lt;sub&amp;gt;8&amp;lt;/sub&amp;gt;mimPF&amp;lt;sub&amp;gt;6&amp;lt;/sub&amp;gt;, Potential Use in Solar Cells

Vania Rojas,Jean Christian Bernède,Helge Lemmetyinen,Linda Cattin Guenadez,Alexander Efimov,Francisco Martínez

doi:10.4236/msa.2017.85028

Alkyl Thiophene Vinylene Electropolimerization in C&lt;sub&gt;8&lt;/sub&gt;mimPF&lt;sub&gt;6&lt;/sub&gt;, Potential Use in Solar Cells

Vania Rojas, Jean Christian Bernède + Show 4 more

Open Access

https://doi.org/10.4236/msa.2017.85028

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Abstract

We report the electrosynthesis of a novel semiconductor polymer based on alkyl vinylthiophene derivative in the presence of an ionic liquid (IL). The polymerization was performed under galvanostatic conditions and the polymer was studied as potential donor component of a multilayer heterojunction organic solar cell (OSC). The monomer used was (E)-1,2-di-(3-octyl-2-thienyl) vinylene (OTV) and the IL used for the electropolymerization was 1-octyl-3-methylimidazole hexafluorophosphate C8mimPF6. Optical properties, stability and morphology of the polymer were analyzed using FT-IR, UV-vis, Raman and XPS spectroscopy. Voltammetry analysis and scanning electron microscopy (SEM-EDX) were also performed on the polymer. The OSC assembled with the polymer of OTV was used as electro donor and C60 as acceptor. Molybdenum trioxide (MoO3) and bathocuproine (BCP) were used as buffer layer between anode and cathode respectively. I-V curves, in the dark and under AM 1.5 solar simulator were performed to measure its efficiency.

Highlights

We report the electrosynthesis of a novel semiconductor polymer based on alkyl vinylthiophene derivative in the presence of an ionic liquid (IL)
The polymerization was performed under galvanostatic conditions and the polymer was studied as potential donor component of a multilayer heterojunction organic solar cell (OSC)
We report here the electropolymerization of (E)-1,2-di-(3-octyl-2-thienyl) vinylene (OTV) in the IL 1-octyl-3-methylimidazole hexafluorophosphate C8mimPF6

Summary

Introduction

The abundance of sunlight and high radiation in vast sectors of the planet can be used to produce electricity through photovoltaic systems, the best way to obtain clean energy in favor of a modern society highly dependent on electricity. In this area, the important technological advance has allowed the development of three types of photovoltaic cells: crystalline silicon [7], organic solar cells (OSC) [8] and dye sensitized solar cells (DSSC) [9]. These two latest technologies are being considered as the most promising candidates for generation solar cells because of their low cost, light weight, flexibility and mass production feasibility

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