Fabrication of Π-structured Bi-Te thermoelectric micro-device by electrodeposition

Kazuho Uda, Yuta Seki, Mikiko Saito, Yoshiaki Sonobe, Yu Chin Hsieh, Hidefumi Takahashi, Ichiro Terasaki, Takayuki Homma

研究成果: Article

16 引用 (Scopus)

抄録

A Π-structured Bi-Te micro-thermoelectric device with a large upper electrode, i.e., an umbrella-type device, was fabricated via electrodeposition, and the effect of the size of the electrode was evaluated. The Bi-Te thermoelectric materials were electrodeposited from HNO3-based aqueous electrolyte. The device consisted of eight arrays, each consisting of 110 thermoelectric units, each of which was electrodeposited onto the patterned substrate with an array of 50 × 50 μm2 holes that were 20 μm deep. The deposition conditions for the n-type and p-type Bi-Te films were optimized to enable patterned electrodeposition of the materials to yield dense and uniform deposits. Accordingly, the materials were selectively deposited in a pattern to fabricate the thermoelectric micro-device. The resultant umbrella-type device, whose electrode is 1.65 times larger than smaller electrode, generated 4.57 times more power than the device with a smaller electrode. Therefore, we confirmed the improvement power by using an umbrella-type device.

元の言語English
ページ(範囲)515-522
ページ数8
ジャーナルElectrochimica Acta
153
DOI
出版物ステータスPublished - 2015 1 20

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Electrodeposition
Fabrication
Electrodes
Electrolytes
Deposits
Substrates

ASJC Scopus subject areas

  • Electrochemistry
  • Chemical Engineering(all)

これを引用

Fabrication of Π-structured Bi-Te thermoelectric micro-device by electrodeposition. / Uda, Kazuho; Seki, Yuta; Saito, Mikiko; Sonobe, Yoshiaki; Hsieh, Yu Chin; Takahashi, Hidefumi; Terasaki, Ichiro; Homma, Takayuki.

:: Electrochimica Acta, 巻 153, 20.01.2015, p. 515-522.

研究成果: Article

Uda, Kazuho ; Seki, Yuta ; Saito, Mikiko ; Sonobe, Yoshiaki ; Hsieh, Yu Chin ; Takahashi, Hidefumi ; Terasaki, Ichiro ; Homma, Takayuki. / Fabrication of Π-structured Bi-Te thermoelectric micro-device by electrodeposition. :: Electrochimica Acta. 2015 ; 巻 153. pp. 515-522.
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AU - Hsieh, Yu Chin

AU - Takahashi, Hidefumi

AU - Terasaki, Ichiro

AU - Homma, Takayuki

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N2 - A Π-structured Bi-Te micro-thermoelectric device with a large upper electrode, i.e., an umbrella-type device, was fabricated via electrodeposition, and the effect of the size of the electrode was evaluated. The Bi-Te thermoelectric materials were electrodeposited from HNO3-based aqueous electrolyte. The device consisted of eight arrays, each consisting of 110 thermoelectric units, each of which was electrodeposited onto the patterned substrate with an array of 50 × 50 μm2 holes that were 20 μm deep. The deposition conditions for the n-type and p-type Bi-Te films were optimized to enable patterned electrodeposition of the materials to yield dense and uniform deposits. Accordingly, the materials were selectively deposited in a pattern to fabricate the thermoelectric micro-device. The resultant umbrella-type device, whose electrode is 1.65 times larger than smaller electrode, generated 4.57 times more power than the device with a smaller electrode. Therefore, we confirmed the improvement power by using an umbrella-type device.

AB - A Π-structured Bi-Te micro-thermoelectric device with a large upper electrode, i.e., an umbrella-type device, was fabricated via electrodeposition, and the effect of the size of the electrode was evaluated. The Bi-Te thermoelectric materials were electrodeposited from HNO3-based aqueous electrolyte. The device consisted of eight arrays, each consisting of 110 thermoelectric units, each of which was electrodeposited onto the patterned substrate with an array of 50 × 50 μm2 holes that were 20 μm deep. The deposition conditions for the n-type and p-type Bi-Te films were optimized to enable patterned electrodeposition of the materials to yield dense and uniform deposits. Accordingly, the materials were selectively deposited in a pattern to fabricate the thermoelectric micro-device. The resultant umbrella-type device, whose electrode is 1.65 times larger than smaller electrode, generated 4.57 times more power than the device with a smaller electrode. Therefore, we confirmed the improvement power by using an umbrella-type device.

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