Effect of Ag mixing in thermoelectric Ge2Sb2Te5 thin films

Vora–ud, Athorn; Horprathum, Mati; Kumar, Manish; Muthitamongkol, Pennapa; Chananonnawathorn, Chanunthorn; Saekow, Bunpot; Nualkham, Intira; Thaowonkaew, Somporn; Thanachayanont, Chanchana; Seetawan, Tosawat

doi:10.1016/j.matlet.2018.09.105

Cited by 11 publications

(2 citation statements)

References 16 publications

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“…[24] Meanwhile, it has low intrinsic lattice thermal conductivity, resulting from the strong interface phonon scattering. There are some researches on the thermoelectric properties of Ge 2 Sb 2 Te 5 film, [25][26][27][28][29][30][31] but few works focus on the bulk Ge 2 Sb 2 Te 5 . Yan et al studied the microstructures and electrical properties of bulk Ge 2 Sb 2 Te 5 .…”

Section: Introductionmentioning

confidence: 99%

Effective Mass Enhancement and Thermal Conductivity Reduction for Improving the Thermoelectric Properties of Pseudo‐Binary Ge₂Sb₂Te₅

Wang

et al. 2019

Annalen der Physik

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Ge 2 Sb 2 Te 5 is a famous phase-change memory material for rewriteable optical storage, which is widely applied in the information storage field. The stable trigonal phase of Ge 2 Sb 2 Te 5 shows potential as a thermoelectric material as well, due to its tunable electrical transport properties and low lattice thermal conductivity. In this work, the carrier concentration and effective mass of Ge 2 Sb 2 Te 5 are modulated by substituting Te with Se. Meanwhile, the thermal conductivity reduces from 2.48 W m −1 K −1 for Ge 2 Sb 2 Te 5 to 1.37 W m −1 K −1 for Ge 2 Sb 2 Te 3.5 Se 1.5 at 703 K. Therefore, the thermoelectric figure of merit zT increases from 0.24 for Ge 2 Sb 2 Te 5 to 0.41 for Ge 2 Sb 2 Te 3.5 Se 1.5 at 703 K. This study reveals that Se alloying is an effective way to enhance the thermoelectric properties of Ge 2 Sb 2 Te 5 .

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Section: Introductionmentioning

confidence: 99%

Effective Mass Enhancement and Thermal Conductivity Reduction for Improving the Thermoelectric Properties of Pseudo‐Binary Ge₂Sb₂Te₅

Wang

et al. 2019

Annalen der Physik

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“…11 Moreover, the A-ST thin film on the SO substrate yielded power factors comparable to those reported for Ag-doped Ge 2 Sb 2 Te 5 thin film. 23 Such interesting power factor values suggest that these films may be used in flexible thermoelectric devices. The thermoelectric properties of films deposited on the SO substrate are better than those on the PI substrate because they yield better phase quality (purity) in comparison to the case of the PI substrate, where the thermally unstable substrate induces the surface oxidation of Te atoms.…”

Section: Resultsmentioning

confidence: 99%

Thermoelectric Properties of Ag-Doped Sb2Te3 Thin Films on SiO2 and Polyimide Substrates with Rapid Thermal Annealing

Thaowonkaew

Kumar²,

Vora–ud

2021

Journal of Elec Materi

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This work reports Ag-doped Sb 2 Te 3 (A-ST) thin films synthesized by DC magnetron sputtering method onto SiO 2 (SO) and polyimide (PI) substrates based on atomic composition optimization. The effect of post-depositional rapid thermal annealing on the crystallinity, morphology, composition, and thermoelectric properties of thin films was investigated. It was found that thin films on crystalline SO substrate yielded higher crystallinity and eventually a higher thermoelectric power factor in comparison to those grown on a polyimide substrate. The maximum room-temperature power factors achieved were 0.53 mW m À1 K À2 (PI) and 3.95 mW m À1 K À2 (SO).

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Transfer of P-type to N-type Thermoelectric Properties of Ag-Sb-Te Thin Film Through Temperature Annealing and Its Electrical Power Generation

Prainetr

Vora–ud

Horprathum

et al. 2019

Journal of Elec Materi

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Effect of Ag mixing in thermoelectric Ge2Sb2Te5 thin films

Cited by 11 publications

References 16 publications

Effective Mass Enhancement and Thermal Conductivity Reduction for Improving the Thermoelectric Properties of Pseudo‐Binary Ge₂Sb₂Te₅

Effective Mass Enhancement and Thermal Conductivity Reduction for Improving the Thermoelectric Properties of Pseudo‐Binary Ge₂Sb₂Te₅

Thermoelectric Properties of Ag-Doped Sb2Te3 Thin Films on SiO2 and Polyimide Substrates with Rapid Thermal Annealing

Transfer of P-type to N-type Thermoelectric Properties of Ag-Sb-Te Thin Film Through Temperature Annealing and Its Electrical Power Generation

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Effect of Ag mixing in thermoelectric Ge2Sb2Te5 thin films

Cited by 11 publications

References 16 publications

Effective Mass Enhancement and Thermal Conductivity Reduction for Improving the Thermoelectric Properties of Pseudo‐Binary Ge2Sb2Te5

Effective Mass Enhancement and Thermal Conductivity Reduction for Improving the Thermoelectric Properties of Pseudo‐Binary Ge2Sb2Te5

Thermoelectric Properties of Ag-Doped Sb2Te3 Thin Films on SiO2 and Polyimide Substrates with Rapid Thermal Annealing

Transfer of P-type to N-type Thermoelectric Properties of Ag-Sb-Te Thin Film Through Temperature Annealing and Its Electrical Power Generation

Contact Info

Product

Resources

About

Effective Mass Enhancement and Thermal Conductivity Reduction for Improving the Thermoelectric Properties of Pseudo‐Binary Ge₂Sb₂Te₅

Effective Mass Enhancement and Thermal Conductivity Reduction for Improving the Thermoelectric Properties of Pseudo‐Binary Ge₂Sb₂Te₅