Theoretical insights into narrow bandgap CuFeS2 chalcopyrite for thermophotovoltaic applications

Ismail, Md.; Abir, Ahnaf Tahmid; Mondal, Bipanko Kumar; Chowdhury, Muhammad Aminul Haque; Hossain, Mainul; Rahaman, Md. Mijanur; Hossain, Jaker

doi:10.1016/j.mtcomm.2024.109089

Materials Today Communications

2024

DOI: 10.1016/j.mtcomm.2024.109089

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Theoretical insights into narrow bandgap CuFeS2 chalcopyrite for thermophotovoltaic applications

Md. Ismail,

Ahnaf Tahmid Abir,

Bipanko Kumar Mondal

et al.

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CuFeS₂/Cu₂S/FeS₂ Composite to Increase the Performance of Thin-Film Thermoelectric Generators Based on Sustainable Materials

Malagutti,

Lohani,

Caño Prades

et al. 2024

ACS Appl. Electron. Mater.

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Thermoelectric devices convert waste heat into electric energy but typically rely on scarce, expensive, and toxic Tebased materials. To address these limitations, we propose the Cu−Fe−S sulfide system as a nontoxic, abundant, and environmentally friendly alternative, with enhanced properties achieved through the synergistic behavior of CuFeS 2 , Cu 2 S, and FeS 2 phases in a thinfilm thermoelectric generator. These phases were synthesized using a three-step process: ball milling, thermal evaporation, and sulfurization of Cu/Fe precursors, with the CuFeS 2 /Cu 2 S/FeS 2 phase ratio being tuned by adjusting the sulfurization temperature and duration. The presence of binary sulfides enhances the electric connectivity between CuFeS 2 grains, which on their own exhibit poor electrical conductivity due to the formation of isolated grains during nucleation. The composite achieved a volumetric power density of 20 μW cm −3 K −1 , outperforming similar Cu-based materials such as Cu 2 SnS 3 and Cu 2 ZnSnS/Se 4 , mainly due to its optimized phase composition, higher density, and the superior Seebeck coefficient and electrical conductivity achieved through nanoinclusion. The eco-friendly, low-cost Cu−Fe−S system, synthesized through scalable ball milling and thermal evaporation, presents a promising alternative to conventional materials for sustainable thermoelectric generation.

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CuFeS₂/Cu₂S/FeS₂ Composite to Increase the Performance of Thin-Film Thermoelectric Generators Based on Sustainable Materials

Malagutti,

Lohani,

Caño Prades

et al. 2024

ACS Appl. Electron. Mater.

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Theoretical insights into narrow bandgap CuFeS2 chalcopyrite for thermophotovoltaic applications

Cited by 1 publication

References 51 publications

CuFeS₂/Cu₂S/FeS₂ Composite to Increase the Performance of Thin-Film Thermoelectric Generators Based on Sustainable Materials

CuFeS₂/Cu₂S/FeS₂ Composite to Increase the Performance of Thin-Film Thermoelectric Generators Based on Sustainable Materials

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Theoretical insights into narrow bandgap CuFeS2 chalcopyrite for thermophotovoltaic applications

Cited by 1 publication

References 51 publications

CuFeS2/Cu2S/FeS2 Composite to Increase the Performance of Thin-Film Thermoelectric Generators Based on Sustainable Materials

CuFeS2/Cu2S/FeS2 Composite to Increase the Performance of Thin-Film Thermoelectric Generators Based on Sustainable Materials

Contact Info

Product

Resources

About

CuFeS₂/Cu₂S/FeS₂ Composite to Increase the Performance of Thin-Film Thermoelectric Generators Based on Sustainable Materials

CuFeS₂/Cu₂S/FeS₂ Composite to Increase the Performance of Thin-Film Thermoelectric Generators Based on Sustainable Materials