Recent Progresses in Thermoelectric Materials

Dear Colleagues,

Pursuits in technology development and environmental sustainability have driven research trends in opposite directions until the blossoming of green energies, which satisfy the aims of both. Thermoelectric (TE) materials, which enable the conversion of thermal energy into electricity, are specialized in waste-heat recovery using a thermoelectric generator (TEG), or spot-cooling via a thermoelectric refrigerator. Both applications help ease the burden of the growing energy shortage issue and protect our earth by reducing heat emissions, making the TE technology green and sustainable. Like all green energies, the conversion efficiency for a TE material matters most and is governed by a dimensionless figure-of-merit zT = (S²σκ^-1) T, in which case the S, σ, κ refers to the Seebeck coefficient, electrical conductivity, and thermal conductivity. After decades of efforts, numerous well-established alloys for TE generators and TE coolers have been reported alongside the breakthroughs in either their zT values or conversion efficiency when resembling a TE module. This Special Issue addresses the recent progress and innovative findings in thermoelectric materials and thermoelectric modules.

Dr. Hsin-Jay Wu
Dr. Kesavan Manibalan
Guest Editors

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