Hiroaki Anno

非平衡グリーン関数法を活用した密度汎関数理論によるBa8Fe6Ge40クラスレートの電子構造と熱電特性

Hiroaki Anno

Phonon glass electron crystal is a design concept for thermoelectric materials. Among the clathrate semiconductors discovered using this concept, the Ba8Ga16Ge30 clathrate exhibits favorable thermoelectric properties in the medium-to-high temperature range. Ba8Au6Ge40, in which the host Ge is replaced with a high-valent …

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密度汎関数理論によるGa-P同時ドープBa8Cu6Ge40クラスレート の電子構造の研究

Hiroaki Anno, Katsuaki Hashikuni

The effect of Ga−P co-doping on the electronic structure has been investigated for p-type clathrate thermoelectric semiconductor Ba_8Cu_6Ge_<40> by density functional theory (DFT) to study the possibility of carrier control. In Ba_8Cu_6Ge_<40>, the Fermi energy EF lies in the valence band, and …

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スクッテルダイトCoSb3の電子構造と輸送特性

Hiroaki Anno, Katsuaki Hashikuni

We report on the electronic structure and electronic transport properties of skutterudite CoSb3 based on density functional theory utilizing the nonequilibrium Green’s function method. CoSb3 has a non-parabolic (linear) dispersion relation near the top of the valence band, and the hole effective …

密度汎関数理論計算によるBa8Cu6Ge40クラスレートの電子構造と輸送特性

Hiroaki Anno, Katsuaki Hashikuni

Semiconducting clathrates are attracting a great deal of attention as potential candidates of thermoelectric material based on a design concept called Phonon Glass and Electron Crystal (PGEC). Since most of the thermoelectric clathrates are n-type, developing a p-type clathrate with high thermoelectric …

非平衡グリーン関数法を活用した密度汎関数理論に基づくナノギャップを有するシリコン・クラスレート・ナノ構造の輸送特性

Hiroaki Anno

Recently, nanostructured materials or nanocomposites, rather than thin films or superlattices, are of increasing interest in creating a new material with high thermoelectric figure of merit. The approach of nanoscale control of materials by introducing nanostructures, such as nanoinclusions, nanointerfaces, etc., may …

Carrier Injection and Thermoelectric Properties for Super Growth Carbon Nanotube by Electric Double Layer Techniques using Ionic Liquids

Haruka Yoshida, Kazuya Okamoto, Hiroaki Anno

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Coupled Thermal–Electrical Analysis of Thermoelectric Generation Module with Bellows Structure

Kazuya Okamoto, Hiroaki Anno

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Transport Properties of Ba 8 Cu 6 Ge 40 Clathrates by Density Functional Theory and Non-Equilibrium Green’s Function Method

Hiroaki Anno, Yudai Koga, Kazuya Okamoto

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非平衡グリーン関数法を活用した密度汎関数理論によるBa8Au6Si40クラスレートの熱電特性の計算

Hiroaki Anno

Effect of Ga content on thermoelectric properties of Ba 8 Cu 5 Ga x Ge 40− x P Clathrate

Kazuya Okamoto, Yudai Koga, Hiroaki Anno

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Characterization of a Prototype of Thermoelectric Generation Module with Bellows Structure using Carbon Nanotubes

Kazuya Okamoto, Hiroaki Anno

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Enhancement of the electrical conductivity of defective carbon nanotube sheets for organic hybrid thermoelectrics by deposition of Pd nanoparticles

Keisuke Oshima, Yukihide Shiraishi, Takuya Matsumura, Ayumi Kuriyama et autres

Pd nanoparticles can cover the defects of carbon nanotubes by a chemical reduction, which results in an increased carrier transport, then a high thermoelectric figure-of-merit, ZT = 0.3, in the sheets of the defect-repaired carbon nanotubes.

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