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Novel gamma-irradiated chitosan-doped reduced graphene-CuInS(2) composites as counter electrodes for dye-sensitized solar cells

To address the issues associated with traditional counter electrodes, a novel gamma-irradiated chitosan-doped reduced graphene-CuInS(2) composite (Chi@RGO-CIS) was used as the counter electrode (CE). The system was fabricated following a simple hydrothermal method. The prepared Chi@RGO-CIS was chara...

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Detalles Bibliográficos
Autores principales: Areerob, Yonrapach, Hamontree, Chaowalit, Sricharoen, Phitchan, Limchoowong, Nunticha, Laksee, Sakchai, Oh, Won-Chun, Pattarith, Kongsak
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9121354/
https://www.ncbi.nlm.nih.gov/pubmed/35693245
http://dx.doi.org/10.1039/d2ra01749k
Descripción
Sumario:To address the issues associated with traditional counter electrodes, a novel gamma-irradiated chitosan-doped reduced graphene-CuInS(2) composite (Chi@RGO-CIS) was used as the counter electrode (CE). The system was fabricated following a simple hydrothermal method. The prepared Chi@RGO-CIS was characterized by various spectroscopic and microscopic techniques. The synergistic effect between chitosan, CuInS(2), and reduced graphene oxide can help in producing a large surface area. It can also help in the generation of catalytic sites toward I-/I(3)-redox electrolytes. We used a composite (based on electrical considerations) to study the effect of the amount of graphene on the characteristics and photovoltaic efficiency of the Chi@RGO-CIS composites. The solar cell assembled with 1.5% Chi@RGO-CIS exhibited an efficiency of 12.21%. The efficiency was higher than that of a Pt-based device (9.96%) fabricated under the same conditions. Hence, Chi@RGO-CIS can be potentially used as the CE of dye-sensitized solar cells (DSSCs). It can be used as a substitute for Pt in DSSCs.