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ORIGINAL ARTICLE, Forest Products Science and Technology • Floresta Ambient. 29 (3) • 2022 • https://doi.org/10.1590/2179-8087-FLORAM-2022-0013 linkcopy

Open-access Effect of the Performance of Lignin Into the Matrix of the TiO2 with Application on DSSCs

AuthorshipSCIMAGO INSTITUTIONS RANKINGS

Founding new materials and structures for solar cells is a challenge in the photovoltaic field. This work evaluated the effect of the lignin in the photovoltaic activity by compounding with TiO2/lignin as photoanode for the dye sensitized solar cells (DSSC’s). Hybrid films (TiO2/lignin) with different concentrations of lignin (5, 10 and 15%) were deposited by spin coating over commercial TiO2 thin films. The cells were sandwich assembled. The characterizations were done through analysis of absorbance, band gap, x-ray diffraction, morphological and electrical. The lignin at 15% reduced the TiO2 band gap from 3.66 to 2.84 eV, favoring the short current density to 11.06 mA/cm2 and efficiency of 4.65%, an increase of 103.95% compared to the TiO2 structure without lignin.

Keywords:
Lignin; TiO2; DSSCs; Spin coating

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Floresta e Ambiente - Instituto de Florestas, Universidade Federal Rural do Rio de Janeiro. BR-465, Km 7, Instituto de Florestas, CEP 23.897-000, Telefone: +55 (21) 2681-4986 - Seropédica - RJ - Brazil
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