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Efficient Dye-Sensitized Solar Cells (DSSCs) via Nitrogen Plasma-Enriched Chitosan@PVA@rGO Blend-Based Counter Electrode Compositions.

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Title: Efficient Dye-Sensitized Solar Cells (DSSCs) via Nitrogen Plasma-Enriched Chitosan@PVA@rGO Blend-Based Counter Electrode Compositions.
Authors: Mostafa, M. M.1 (AUTHOR), Aladim, A. K.2 (AUTHOR), Sebak, M. A.2 (AUTHOR) masebage@ju.edu.sa, Shahat, M. Abdelhamid3 (AUTHOR) m.abdelhamid999@gmail.com
Source: Journal of Inorganic & Organometallic Polymers & Materials. Apr2025, Vol. 35 Issue 4, p2987-3004. 18p.
Subjects: Dye-sensitized solar cells, Energy development, Clean energy, Renewable energy sources, Physical & theoretical chemistry
Abstract: Dye-sensitized solar cells (DSSCs) present a promising solution for renewable energy due to their affordability, versatility, and sustainability, which are crucial in addressing climate change. This study explores the enhancement of low-cost, platinum-free counter-electrodes (CEs) for DSSCs through nitrogen (N2) plasma treatment, aimed at increasing photon absorption and the creation of active sites for improved efficiency. For the first time, Chitosan@PVA@rGO (CPG) hybrid films were developed as CE material and exposed to in-situ N2-plasma modification levels (0, 1, 2, 3, and 4 min) to optimize their microstructural and physiochemical properties. Comprehensive evaluations, including J–V characteristic analysis, microstructural, porosity, morphology, contact angle, optical, and electrochemical impedance spectroscopy (EIS) assessments, were conducted. The study reveals that increasing plasma levels progressively enhanced the surface characteristics of the CPG composites, with optimal performance observed after 3 min (73.5% porosity, roughness Ra = 6.69 μm). Notably, plasma procedure improved DSSC efficiency, reaching 6.67% after 1 min and 7.48% after 2 min. Enhanced charge carrier mobility and reduced recombination were observed, resulting in prolonged device lifespan and efficient charge transfer. The CPG CE achieved a peak efficiency of 9.12% and a Jsc of 19.44 mA/cm² after 3 min, marking a 40% improvement over the pristine material. This improvement is attributed to the formation of oxygen-enriched free radicals within the CPG structure, facilitating rapid electron transfer. This research underscores the potential of plasma surface modification in optimizing heteroatom-doped CE materials for DSSCs, offering a novel approach to enhancing photovoltaic performance. Continued improvements in DSSC technology are going to produce a more powerful and sustainable energy future, including current advances such as plasma treatments and their seamless integration with energy systems for improved effectiveness and durability. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Inorganic & Organometallic Polymers & Materials is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Efficient Dye-Sensitized Solar Cells (DSSCs) via Nitrogen Plasma-Enriched Chitosan@PVA@rGO Blend-Based Counter Electrode Compositions.
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  Data: <searchLink fieldCode="AR" term="%22Mostafa%2C+M%2E+M%2E%22">Mostafa, M. M.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Aladim%2C+A%2E+K%2E%22">Aladim, A. K.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Sebak%2C+M%2E+A%2E%22">Sebak, M. A.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> masebage@ju.edu.sa</i><br /><searchLink fieldCode="AR" term="%22Shahat%2C+M%2E+Abdelhamid%22">Shahat, M. Abdelhamid</searchLink><relatesTo>3</relatesTo> (AUTHOR)<i> m.abdelhamid999@gmail.com</i>
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  Data: <searchLink fieldCode="DE" term="%22Dye-sensitized+solar+cells%22">Dye-sensitized solar cells</searchLink><br /><searchLink fieldCode="DE" term="%22Energy+development%22">Energy development</searchLink><br /><searchLink fieldCode="DE" term="%22Clean+energy%22">Clean energy</searchLink><br /><searchLink fieldCode="DE" term="%22Renewable+energy+sources%22">Renewable energy sources</searchLink><br /><searchLink fieldCode="DE" term="%22Physical+%26+theoretical+chemistry%22">Physical & theoretical chemistry</searchLink>
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  Data: Dye-sensitized solar cells (DSSCs) present a promising solution for renewable energy due to their affordability, versatility, and sustainability, which are crucial in addressing climate change. This study explores the enhancement of low-cost, platinum-free counter-electrodes (CEs) for DSSCs through nitrogen (N2) plasma treatment, aimed at increasing photon absorption and the creation of active sites for improved efficiency. For the first time, Chitosan@PVA@rGO (CPG) hybrid films were developed as CE material and exposed to in-situ N2-plasma modification levels (0, 1, 2, 3, and 4 min) to optimize their microstructural and physiochemical properties. Comprehensive evaluations, including J–V characteristic analysis, microstructural, porosity, morphology, contact angle, optical, and electrochemical impedance spectroscopy (EIS) assessments, were conducted. The study reveals that increasing plasma levels progressively enhanced the surface characteristics of the CPG composites, with optimal performance observed after 3 min (73.5% porosity, roughness Ra = 6.69 μm). Notably, plasma procedure improved DSSC efficiency, reaching 6.67% after 1 min and 7.48% after 2 min. Enhanced charge carrier mobility and reduced recombination were observed, resulting in prolonged device lifespan and efficient charge transfer. The CPG CE achieved a peak efficiency of 9.12% and a Jsc of 19.44 mA/cm² after 3 min, marking a 40% improvement over the pristine material. This improvement is attributed to the formation of oxygen-enriched free radicals within the CPG structure, facilitating rapid electron transfer. This research underscores the potential of plasma surface modification in optimizing heteroatom-doped CE materials for DSSCs, offering a novel approach to enhancing photovoltaic performance. Continued improvements in DSSC technology are going to produce a more powerful and sustainable energy future, including current advances such as plasma treatments and their seamless integration with energy systems for improved effectiveness and durability. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Inorganic & Organometallic Polymers & Materials is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1007/s10904-024-03438-0
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      – SubjectFull: Dye-sensitized solar cells
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      – SubjectFull: Energy development
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      – SubjectFull: Clean energy
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      – SubjectFull: Renewable energy sources
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      – SubjectFull: Physical & theoretical chemistry
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      – TitleFull: Efficient Dye-Sensitized Solar Cells (DSSCs) via Nitrogen Plasma-Enriched Chitosan@PVA@rGO Blend-Based Counter Electrode Compositions.
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              Text: Apr2025
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              Y: 2025
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