Purification and investigation of tellurium rich Te-As-Se chalcogenide glass for extended far-infrared transmission

Prabhudessai, Akila G.; Balaji, Sathravada; Biswas, Kaushik; Molla, A.R.; Vinoth, S.; Ramesh, K.; Dutta, Sutanu; Chauhan, Abhishek k.; Singh, Siddhant; Dasgupta, Rana; Sarkar, Pratik; Annapurna, K.

doi:10.1016/j.jnoncrysol.2024.123093

Journal of Non-Crystalline Solids

2024

DOI: 10.1016/j.jnoncrysol.2024.123093

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Purification and investigation of tellurium rich Te-As-Se chalcogenide glass for extended far-infrared transmission

Akila G. Prabhudessai,

Sathravada Balaji,

Kaushik Biswas

et al.

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Preparation and Electrothermal Transport Behavior of Sn8[(Ga2Te3)34(SnTe)66]92 Bulk Glass

Zhang,

Guo,

Zhang

et al. 2024

Materials

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High-conductivity tellurium-based glasses were anticipated to be the attractive candidates in chalcogenide glass systems on account of their distinctive characteristics and extensive application prospects. In this paper, the high-density (>96%) Sn8[(Ga2Te3)34(SnTe)66]92 bulk glass with the density of 5.5917 g/cm3 was successfully prepared by spark plasma sintering (SPS) technology at 460 K, using a 5 min dwell time and 450 MPa pressure. The room-temperature thermal conductivity of Sn8 bulk materials significantly decreased from 1.476 W m−1∙K−1 in the crystalline sample to 0.179 W m−1∙K−1 in the glass, and the Seebeck coefficient obviously increased from 35 μV∙K−1 in to 286 μV∙K−1, indicating that the glass transition of tellurium-based semiconductors could optimize the thermal conductivity and Seebeck coefficient of the materials. Compared to the conventional tellurium-based glassy systems, the fabricated Sn8 bulk glass presented a high room-temperature conductivity (σ = 6.2 S∙m−1) and a large glass transition temperature (Tg = 488 K), which was expected to be a promising thermoelectric material.

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Preparation and Electrothermal Transport Behavior of Sn8[(Ga2Te3)34(SnTe)66]92 Bulk Glass

Zhang,

Guo,

Zhang

et al. 2024

Materials

View full text Add to dashboard Cite

show abstract

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Purification and investigation of tellurium rich Te-As-Se chalcogenide glass for extended far-infrared transmission

Cited by 1 publication

References 74 publications

Preparation and Electrothermal Transport Behavior of Sn8[(Ga2Te3)34(SnTe)66]92 Bulk Glass

Preparation and Electrothermal Transport Behavior of Sn8[(Ga2Te3)34(SnTe)66]92 Bulk Glass

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