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Vol. 37 No. 7 (2025): Vol 37 Issue 7, 2025

Copyright (c) 2025 Kirti Hooda, Anshul Singh Anshul Singh, Virender Kundu, Aman Kumar

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Synthesis of Magnesium/Copper Doped or co-doped ZnO as Photoanode: A Study of Optical and Structural Properties for Enhancing the Photovoltaic Properties of DSSCs

https://doi.org/10.14233/ajchem.2025.33891
Kirti Hooda
Department of Chemistry, Baba Mastnath University, Rohtak-124021, India
https://orcid.org/0009-0005-2632-6097
Anshul Singh
Department of Chemistry, Baba Mastnath University, Rohtak-124021, India
https://orcid.org/0000-0003-0962-308X
Virender Singh Kundu
Department of Electronic Science, Kurukshetra University, Kurukshetra-136119, India
Aman Kumar
Department of Physics, Maharishi Markandeshwar Deemed to be University, Mullana-133203, India

Corresponding Author(s) : Anshul Singh

anshul9008@gmail.com

Asian Journal of Chemistry, Vol. 37 No. 7 (2025): Vol 37 Issue 7, 2025

Abstract

Pure ZnO and Cu/Mg co-doped ZnO nanoparticles were synthesized using sol-gel technique. The optical, morphological and structural characteristics of the prepared samples were thoroughly examined. The single-phase hexagonal wurtzite structure, devoid of any impurity phase, was identified by X-ray diffraction data. The effective integration of Cu2+/Mg2+ ions into the host ZnO structure is validated by XRD. To examine the morphology of the materials, field emission scanning electron microscopy was utilized. The results showed that the ZnO nanoparticles were highly agglomerated and widely distributed, with a nearly distinct crystalline character. UV-visible spectroscopy was used to analyze the optical characteristics of samples. The electrochemical characteristics of fill factor, open circuit voltage and short circuit current density were determined using J-V characterization. In dye-sensitized solar cell (DSSC), copper ions serve as a barrier layer that prevents electrons from flowing backward, hence reducing recombination. The efficiency of DSSCs improves due to reduced charge recombination. An alternative approach to optimizing photovoltaic performance involves cationic substitution of metal ions, such as Mg2+, in ZnO. This modification not only influences the positioning of the conduction band but also slightly broadens the band gap, contributing to enhanced energy conversion efficiency. The effect of Cu2+/Mg2+ doping in a ZnO-based DSSC’s efficiency was examined in the current study and the efficiency of Cu2+/Mg2+ co-doped ZnO photoanode in DSSCs were measured at 0.8140%, showing an enhancement of approximately 238% compared to the efficiency of pure ZnO-based photoanode utilized in DSSCs. An improved DSSC light harvesting efficiency is supported by all of these findings. This proves that doping ZnO nanoparticles is a good way to boost the appropriate efficiency of a solar cell application.

Keywords

Copper/Magnesium co-doped ZnO nanoparticles Dye sensitized solar cell Sol-gel Photoanode
(1)
Hooda, K.; Singh, A.; Kundu, V. S.; Kumar, A. Synthesis of Magnesium Copper Doped or Co-Doped ZnO As Photoanode: A Study of Optical and Structural Properties for Enhancing the Photovoltaic Properties of DSSCs. ajc 2025, 37, 1641-1648.
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