Enhanced rectification effect in silver chalcogenide-based thermal diode by using precipitation/dissolution of Ag impurity across the structure phase transition.

ABSTRACT: For developing high-performance composite-type thermal diodes, this study focuses on silver chalcogenides, which undergo structural phase transitions in the temperature range of 350 K to 473 K, accompanied by a significant stepwise change in thermal conductivity. Ag_2 + x Te_0.9S_0.1 (x = 0, 0.01, 0.02, 0.025, 0.03, 0.035, 0.04, and 0.05) and Ag₂S_{1 - y} Se _y (y = 0.35, 0.375, 0.4, 0.425, and 0.45) samples were synthesized with precisely controlled compositions, and their temperature-dependent thermal conductivity across the phase transition was studied with the composition dependence. Ag₂Te_0.9S_0.1 exhibits a stepwise decrease in thermal conductivity with transit

SUBMITTER: Hirata K 

PROVIDER: S-EPMC12447454 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature