Thermoelectric Properties of Bi0.5Sb1.5Te3 Prepared by Liquid-Phase Growth Using a Sliding Boat

Kitagawa, Hiroyuki; Takino, Teppei; Tsukutani, Tatsuya; Kato, Toshihito; Nanba, M.; Kamata, Kinya

doi:10.1007/s11664-013-2518-y

Cited by 3 publications

(5 citation statements)

References 17 publications

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“…These structural and textural characteristics were similar to those observed for a p-type Bi 0.5 Sb 1.5 Te 3 prepared by LPG using a sliding boat. 9 However, the existence of different phases in the Cu-doped Bi 2 Te 2.85 Se 0.15 was confirmed by EDX analysis. In Fig.…”

Section: Resultsmentioning

confidence: 92%

“…7 We have previously reported liquid phase growth (LPG) using a sliding boat as a simple, easy, and short process for preparation of p-type Bi 0.5 Sb 1.5 Te 3 with high c-plane orientation. 8,9 A large power factor of 4.4 9 10 À3 W/K 2 m due to small electrical resistivity was obtained for this material by controlling carrier concentration. 9 Therefore, it seems essential to apply this method to n-type Bi-Te-Sebased materials.…”

Section: Introductionmentioning

confidence: 91%

“…8,9 A large power factor of 4.4 9 10 À3 W/K 2 m due to small electrical resistivity was obtained for this material by controlling carrier concentration. 9 Therefore, it seems essential to apply this method to n-type Bi-Te-Sebased materials. A number of different donor dopants have been used to produce such n-type Ó 2014 The Minerals, Metals & Materials Society materials.…”

Section: Introductionmentioning

confidence: 91%

“…9 The material was set in the cavity shown in Fig. 1 and the sliding boat was placed into the quartz tube at the center of the furnace.…”

Section: Introductionmentioning

confidence: 99%

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Thermoelectric Properties of Cu-Doped n-Type Bi2Te2.85Se0.15 Prepared by Liquid Phase Growth Using a Sliding Boat

Kitagawa

Matsuura

Kato

et al. 2014

Journal of Elec Materi

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N-type Bi 2 Te 2.85 Se 0.15 thermoelectric materials were prepared by liquid phase growth (LPG) using a sliding boat, a simple and short fabrication process for Bi 2 Te 3 -related materials. Cu was selected as a donor dopant, and its effect on thermoelectric properties was investigated. Thick sheets and bars of Cu x Bi 2 Te 2.85 Se 0.15 (x = 0-0.25) of 1-2 mm in thickness were obtained using the process. X-ray diffraction patterns and scanning electron micrographs showed that the in-plane direction tended to correspond to the hexagonal c-plane, which is the preferred direction for thermoelectric conversion. Cu-doping was effective in controlling conduction type and carrier (electron) concentration. The conduction type was p-type for undoped Bi 2 Te 2.85 Se 0.15 and became n-type after Cu-doping. The Hall carrier concentration was increased by Cu-doping. Small resistivity was achieved in Cu 0.02 Bi 2 Te 2.85 Se 0.15 owing to an optimized amount of Cu-doping and high crystal orientation. As a result, the maximum power factor near 310 K for Cu 0.02 Bi 2 Te 2.85 Se 0.15 was approximately 4 9 10 À3 W/K 2 m and had good reproducibility. Furthermore, the thermal stability of Cu 0.02 Bi 2 Te 2.85 Se 0.15 was also confirmed by thermal cycling measurements of electrical resistivity. Thus, n-type Bi 2 Te 2.85 Se 0.15 with a large power factor was prepared using the present LPG process.

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Section: Resultsmentioning

confidence: 92%

Section: Introductionmentioning

confidence: 91%

Section: Introductionmentioning

confidence: 91%

“…9 The material was set in the cavity shown in Fig. 1 and the sliding boat was placed into the quartz tube at the center of the furnace.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Thermoelectric Properties of Cu-Doped n-Type Bi2Te2.85Se0.15 Prepared by Liquid Phase Growth Using a Sliding Boat

Kitagawa

Matsuura

Kato

et al. 2014

Journal of Elec Materi

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“…The mechanical properties are also very low on account of the weak Van der Waals bonding between Te(1)-Te(1) layers [10,11]. Therefore, many bulk materials are fabricated by powder metallurgy sintering to increase mechanical properties, such as hot pressing or plasma activated sintering [12], which enables rapid synthesis of various materials by heating under uniaxial pressure, obtaining materials with smaller grain size and higher density at a relatively lower temperature in a shorter time [13,14].…”

Section: Introductionmentioning

confidence: 99%

Effect of Chemical Plating with Ni Content on Thermoelectric and Mechanical Properties of P-Type Bi0.5Sb0.15Te3 Bulk Alloys

Dai

et al. 2016

MSF

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In this work, Bi0.5Sb1.5Te3 powders were coated with various nickel (Ni) contents by chemical plating, and then consolidated into bulk by hot pressing. The results show that Ni particles uniformly coat on the surface of powders and then transform into NiTe2 during the sintering process, after that NiTe2 mainly concentrated at the grain boundaries of bulk. With Ni content increasing, the resistivity of bulk samples and Seebeck coefficient decreased rapidly while thermal conductivity increased. The maximum value of ZT for Bi0.5Sb1.5Te3/Ni sample with 1wt.% Ni is 0.55. Moreover, due to the excellent ductility of Ni that can act as lubricant and binder during the hot pressing process, making the mechanical properties (hardness) of bulks elevated with Ni content increasing. This work suggests that chemical plating technology can improve the mechanical properties and impact the thermoelectric properties of thermoelectric materials. With further tuning the type and content of coating elements, the thermoelectric performance can be improved prospectively.

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Thermoelectric properties of Bi0.5Sb1.5Te3 thin films grown by pulsed laser deposition

Symeou

Pervolaraki

Mihăilescu

et al. 2015

Applied Surface Science

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Thermoelectric Properties of Bi0.5Sb1.5Te3 Prepared by Liquid-Phase Growth Using a Sliding Boat

Cited by 3 publications

References 17 publications

Thermoelectric Properties of Cu-Doped n-Type Bi2Te2.85Se0.15 Prepared by Liquid Phase Growth Using a Sliding Boat

Thermoelectric Properties of Cu-Doped n-Type Bi2Te2.85Se0.15 Prepared by Liquid Phase Growth Using a Sliding Boat

Effect of Chemical Plating with Ni Content on Thermoelectric and Mechanical Properties of P-Type Bi<sub>0.5</sub>Sb<sub>0.15</sub>Te<sub>3</sub> Bulk Alloys

Thermoelectric properties of Bi0.5Sb1.5Te3 thin films grown by pulsed laser deposition

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