NATURAL DYE SENSITIZED SOLAR CELLS USING HENNA LEAVES WITH ZnO NANOPARTICLE AT VARIOUS pH VALUES

Esakki, Selva; Devi, Kamatchi; Sheeba, .; Sundar, Meenakshi

doi:10.55218/jasr.202213507

Cited by 4 publications

(1 citation statement)

References 24 publications

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“…It was demonstrated that the efficiency of ZnO nanorod solar cells sensitized with HE surpassed that of solar cells sensitized with beetroot and amla extracts. Esakki et al ( 2022 ) engineered DSSCs using colors derived from henna, applying the solvothermal technique at different pH levels (3–9), and utilizing ZnONPs created with HLE as a photoanode. The ZnONPs achieved the highest efficiency of 0.39% at pH 9, outperforming other solar cells.…”

Section: Dye-sensitized Solar Cellsmentioning

confidence: 99%

Back to nature: henna extracts from nanotech to environmental biotechnology – a review

Abd-El-Haleem

2023

bta

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The Lythraceae family includes henna (Lawsonia inermis), which thrives in subtropical and tropical climates. One of its many and long-standing uses is in cosmetics as a pigment to color hair and nails. Additionally, it serves as a disinfectant against microbiological infections and has traditional applications in the textile industry, specifically for coloring wool and nylon. The dried leaves of henna contain a significant amount of lawsone, an active substance bestowing them with staining abilities. Environmental biotechnology, a subfield of biotechnology, engages in the production of biomass or renewable energy sources and the elimination of pollutants, utilizing either entire organisms or their by-products. Recent research indicates that henna, owing to its sustainability, abundant production, simplicity of preparation, low cost, and reputation for being safe and ecologically benign, is exceptionally well-suited to participate in the realm of environmental biotechnology. This review navigates through the most recent studies exploring the use of henna and its extracts for related purposes. These encompass a spectrum of applications, including but not limited to nanobiotechnology, fabric dyeing, corrosion resistance, colored solar cells, carbon dots, and new renewable energy exemplified by biofuel and biohydrogen. Furthermore, henna extracts have been deployed to function as antimicrobials and ward off dangerous insects.

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Section: Dye-sensitized Solar Cellsmentioning

confidence: 99%

Back to nature: henna extracts from nanotech to environmental biotechnology – a review

Abd-El-Haleem

2023

bta

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Influence on the efficiency of dye-sensitized solar cell using Cd doped ZnO via solvothermal method

Esakki

Vivek

Sundar

2023

Inorganic Chemistry Communications

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Enhancing efficiency of dye-sensitized solar cell using Mn or Ce doped and Co-doped ZnO photoanodes with lawsonia inermis natural dye

Kumar,

Kundu

et al. 2024

Phys. Scr.

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In the present research paper, Mn (transition metal) and Ce (rare earth metal) doped and co-doped ZnO nanoparticles were synthesized using a cost-effective sol-gel technique. As synthesized samples were characterized using X-ray diffraction and field emission scanning electron microscope to examine the structure and morphology respectively. The optical properties were examined by UV-Visible and photoluminescence spectroscopic techniques. The synthesized samples were used as photoanode for the fabrication of dye-sensitized solar cell (DSSC). The utilization of a photoanode, containing Mn and Ce doped and co-doped in ZnO, in DSSC leads to a significant enhancement in photovoltaic conversion efficiency with natural dye lawsonia inermis. Different combinations of Mn or Ce doped and co-doped ZnO nanoparticles were used for testing their effectiveness as photoanode in DSSC. It was observed that the efficiency for Mn and Ce co-doped ZnO photoanode-based DSSC was found to be 0.2118%, which is approximately a 750% increase as compared to bare ZnO photoanode based DSSC. The enhancement in the efficiency of DSSCs was due to the formation of a blocking layer by Mn ions which helps to stop the flow of electrons backward and the broadening of the spectrum region with the help of Ce ions using up/down conversion process also helps to achieve higher efficiency. This enhancement in the efficiency of DSSC may be attributed to the synergic effect of Mn and Ce.

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NATURAL DYE SENSITIZED SOLAR CELLS USING HENNA LEAVES WITH ZnO NANOPARTICLE AT VARIOUS pH VALUES

Cited by 4 publications

References 24 publications

Back to nature: henna extracts from nanotech to environmental biotechnology – a review

Back to nature: henna extracts from nanotech to environmental biotechnology – a review

Influence on the efficiency of dye-sensitized solar cell using Cd doped ZnO via solvothermal method

Enhancing efficiency of dye-sensitized solar cell using Mn or Ce doped and Co-doped ZnO photoanodes with lawsonia inermis natural dye

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