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Recent Patents on Nanotechnology

Editor-in-Chief

ISSN (Print): 1872-2105
ISSN (Online): 2212-4020

Research Article

Enhanced Efficiency of Dye Sensitized Solar Cell Using Eu Doped TiO2-ZrO2 Nanocomposite

Author(s): Laxmi Tomar, Piyush Bhatt*, Rahul Desai and Bishwajit Chakrabarty

Volume 16, Issue 4, 2022

Published on: 13 January, 2022

Page: [333 - 338] Pages: 6

DOI: 10.2174/1872210515666210614163845

Price: $65

Abstract

Background: Hydrothermal method was used to prepare TiO2-ZrO2 and Eu doped TiO2-ZrO2 nanocomposites for dye sensitized solar cell app lication.

Methods: X-ray diffraction was used to study the structural properties of prepared samples. Anatase and Rutile phases of TiO2 and Monoclinic and tetragonal phases of ZrO2 have been detected from XRD in prepared samples. The crystallite size of prepared samples lies between 6 to 18 nm. Absorption edge has been shifted to the longer wavelength region. The optical bandgap of TiO2-ZrO2 (2.15 eV) and Eu doped TiO2-ZrO2 nanocomposites (2.03 eV) have been calculated using Tauc’s plot. A decrease in bandgap compared to pure TiO2 has been observed. The increased refractive index has been determined from UV -Visible spectra.

Results: Because of the high refractive index photons can stay for longer period of time inside the material and then they can be used to generate electrons in dye sensitized solar cell. An attempt was made to prepare an inexpensive dye sensitized solar cell by replacing synthetic organic dye with natural dye (pomegranate juice) and platinum coated counter electrode by carbon coated electrode. The improvement in efficiency has been recorded for prepared samples and it has been found to be 0.71%, 1.97% and 6.25% for TiO2, TiO2-ZrO2 nanocomposite and Eu doped TiO2-ZrO2 nanocomposite respectively.

Conclusion: A simple and cost-effective DSSC prepared by materials is capable of producing a good amount photocurrent.

Keywords: TiO2-ZrO2, hydrothermal method, nanocomposite, dye sensitized solar cell, natural dye, counter electrode.

Graphical Abstract
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