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- W1971209701 abstract "Engineering nanostructure in bulk thermoelectric materials has recently been established as an effective approach to scatter phonons, reducing the phonon mean free path, without simultaneously decreasing the electron mean free path for an improvement of the performance of thermoelectric materials. Herein the synthesis, phase stability, and thermoelectric properties of the solid solutions Cu2+xZn1–xGeSe4 (x = 0–0.1) are reported. The substitution of Zn2+ with Cu+ introduces holes as charge carriers in the system and results in an enhancement of the thermoelectric efficiency. Nano-sized impurities formed via phase segregation at higher dopant contents have been identified and are located at the grain boundaries of the material. The impurities lead to enhanced phonon scattering, a significant reduction in lattice thermal conductivity, and therefore an increase in the thermoelectric figure of merit in these materials. This study also reveals the existence of an insulator-to-metal transition at 450 K." @default.
- W1971209701 created "2016-06-24" @default.
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- W1971209701 date "2012-04-12" @default.
- W1971209701 modified "2023-10-02" @default.
- W1971209701 title "Influence of a Nano Phase Segregation on the Thermoelectric Properties of the p-Type Doped Stannite Compound Cu<sub>2+<i>x</i></sub>Zn<sub>1–<i>x</i></sub>GeSe<sub>4</sub>" @default.
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- W1971209701 doi "https://doi.org/10.1021/ja301452j" @default.
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