POTENTIAL APPLICATION OF REDUCED NANO GRAPHENE OXIDE AS COUNTER ELETRODE IN THIRD GENERATION PHOTOVOLTAIC CELLS
DOI:
https://doi.org/10.59627/cbens.2024.2348Keywords:
Third Generation Solar Cell, Counter Electrode, Reduced Nano Graphene Oxide (nGOr)Abstract
Reduced Nano Graphene Oxide (nGOr) presents optical and electrical characteristics that make it very promising. In the present study, nGOr was used to obtain a counter electrode to replace platinum. In this way, characterizations were carried out using Fourrier Transform Infrared Spectroscopy (FTIR), X-ray Diffraction (XRD), Microscopy Scanning Electronics (SEM), in addition to a survey of the Characteristic Curve for subsequent assembly of a photovoltaic device. In the FTIR spectrum, the presence of bands 3272 cm -1 was observed relating to the stretching of the OH bond, axial deformation vibrations C≡C at 2091 cm-1, stretching of the C=O bonds at 1585 cm-1, stretching of the C-O bond at 1321 cm-1 and a band at 1010 cm-1. In the diffractogram it was observed the presence of amorphous peaks in the 2θ positions at 16.74º, 22.52º and 27.52º and other peaks in 2θ equal to 44.02º, 64.40º and 77.50º indicating high crystallinity of the material. In the micrographs obtained by SEM it was possible to observe that the nGOr presents irregular morphology and plate stacking, in addition, the presence of nanoparticles was observed. Experimentally, it was possible to verify that nOGr has the potential to be applied as a counter electrode in third generation photovoltaic devices, making it necessary to better understand the mechanisms that are related to its photosensitivity. In the next stages of the research, the photovoltaic devices will be assembled and new characterizations will be carried out.
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Deretzis, I. La Magna, A. Coherent eléctron transport in quasi one-dimensional carbon-based systems. The European Physical Journal B, v. 81. n.1, p.15-36, 2011.
Dissanayake, M.A.K.L. Kumari, J.M.K.W. Senadeera, G.K.R. Anwar, Hafeez. Low cost, platinum free counter electrode with reduced graphene oxide and polyaniline embedded SnO 2 for efficient dye sensitized solar cells. Solar Energy, 230, 151-165, 2021.
Galande, C. Mohite, A.D. Naumov, A. V. Gao, W. Ci, L. Ajayan, A. Gao, H. Srivastava, A. Weisman, B. R. Ajayan, M. P. Quasi-Molecular Fluorescence from Graphene Oxide. 1:85, 2011.
HLA, S. W. Graphene: Conductivity measurements pick up. Nature Nanotechnology, v.7, n.11, p.693-694, 2012.
Lee, C. et al. Measurement of the elastic properties and intrinsic strength of monolayer graphene. Science, v.321, n.5887, p.385-388, 2008.
Souza, Thaina S. Sakata, Solange K. Síntese do nano compósito óxido de grafeno/prata via feixe de elétrons com atividade antimicrobiana. In: programa institucional de bolsas de iniciação científica, programa de bolsas e iniciação científica cnen, programa institucional de bolsas de iniciação desenvolvimento tecnológico e inovação, São Paulo, 2015.
Stankovich, S. Piner, R.D. Nguyen, S.T. Ruoff, R. S. Synthesis and exfoliation of isocyanate-treated graphene oxide nanoplatelets. Carbon 44, 3342-3347, 2006.
Sudhakar, V. Singh, A.K. Chini, M.K. Nanoporous Reduced Graphene Oxide and Polymer Composites as Efficient Counter Electrodes in Dye-Sensitized Solar Cells. ACS Applied Eletronic Materials, 2, 626-634, 2020.
Yang, J. Zhou, Y. Sun, L. Zhao, N. Chuanliang, Z. Cheng, X. Synthesis, characterization and optical property of graphene oxide films. Applied Surface Science, 258, 5056-5060, 2012.
