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Novel gamma-irradiated chitosan-doped reduced graphene-CuInS2 composites as counter electrodes for dye-sensitized solar cells.

ABSTRACT: To address the issues associated with traditional counter electrodes, a novel gamma-irradiated chitosan-doped reduced graphene-CuInS2 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, CuInS2, and reduced graphene oxide can help in producing a large surface area. It can also help in the generation of catalytic sites toward I-/I3-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.

SUBMITTER: Areerob Y 

PROVIDER: S-EPMC9121354 | biostudies-literature | 2022 May

REPOSITORIES: biostudies-literature

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Novel gamma-irradiated chitosan-doped reduced graphene-CuInS<sub>2</sub> composites as counter electrodes for dye-sensitized solar cells.

Areerob Yonrapach Y   Hamontree Chaowalit C   Sricharoen Phitchan P   Limchoowong Nunticha N   Laksee Sakchai S   Oh Won-Chun WC   Pattarith Kongsak K  

RSC advances 20220520 24

To address the issues associated with traditional counter electrodes, a novel gamma-irradiated chitosan-doped reduced graphene-CuInS<sub>2</sub> 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<sub>2</sub>, and reduced graphene oxide can help in producing a large surface area  ...[more]

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