Abstract
Hybrid solar cells show an increasing number in researches due to its low cost and easy of production. They are composed by and organic material and a semiconductor oxide. The aim of this paper was to synthesis and characterize zinc oxide by coprecipitation and apply it in a hybrid solar cell that uses a P3HT/P3OT copolymer as charge carrier. The cell was assembled in sandwich form using FTO/ZnO/P3HT-P3OT as work electrode, (Pt/FTO) as conter electrode and I/I-3 redox couple as electrolyte. Through the X-ray diffractogram the formation of a single ZnO wutzite hexagonal phase was observed. The morphology obtained for the oxide was spherical. The results of photochronoamperometry showed current density values of jP3HT/P3OT =0.55 mA.cm-2 for the cell in the presence of the copolymer and the curve jxV showed an efficiency of 0.16% for the studied cell, demonstrating that the polymer was a satisfactory sensitizer.
Highlights
The search for new devices that can convert solar energy to electricity is one of the most promising methodologies for the century, due to issues caused by the burning of fossil fuels
The paste was coated by the Spin Coating method, in conductor glass fluorine tin oxide (FTO) at 2500 rpm
The P3OT / P3MT copolymer was synthesized by electrochemical method and the solution was prepared using 0.1 g of P3OT / P3MT in 100 mL of Toluene
Summary
The search for new devices that can convert solar energy to electricity is one of the most promising methodologies for the century, due to issues caused by the burning of fossil fuels. Many types of photovoltaic devices (PV) have been studied, even though silicone based solar cells have shown better efficiency of harvesting light, it has a higher cost, and a more complicated fabrication process, as described by Mahalingam and Andullah[1]. Third generation PV cells are devices that do not follow the Shockley Queisser limit. In this class, the perovskite solar cells (PVK), dye sensitized solar cells (DSSC), quantum dots sensitized solar cells (QDSC) and, the focus of this paper, hybrid solar cells (HSC) are found[2,3]. The organic photosensitizer eject electrons to a higher energy state, and into the conduction band of a nanocrystalline oxide. The oxidized molecules diffuse to a counter electrode, where they are rapidly reduced, leading to an electron flow, and an electric current
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