摘要:
Thermoelectric conversion materials, expressed by the following formula: Bi1-xMxCuwOa-yQ1yTeb-zQ2z. Here, M is at least one element selected from the group consisting of Ba, Sr, Ca, Mg, Cs, K, Na, Cd, Hg, Sn, Pb, Mn, Ga, In, Tl, As and Sb; Q1 and Q2 are at least one element selected from the group consisting of S, Se, As and Sb; x, y, z, w, a, and b are 0≦x
摘要翻译:热电转换材料,由下式表示:Bi1-xMxCuwOa-yQ1yTeb-zQ2z。 这里,M是选自Ba,Sr,Ca,Mg,Cs,K,Na,Cd,Hg,Sn,Pb,Mn,Ga,In,Tl,As和Sb中的至少一种元素; Q1和Q2是选自S,Se,As和Sb中的至少一种元素; x,y,z,w,a和b分别为0&nlE; x <1,0,0
摘要:
A metal mixture is prepared, in which an excess amount of Te is added to a (Bi—Sb)2Te3 based composition. After melting the metal mixture, the molten metal is solidified on a surface of a cooling roll of which the circumferential velocity is no higher than 5 m/sec, so as to have a thickness of no less than 30 μm. Thus, a plate shaped raw thermoelectric semiconductor materials 10 are manufactured, in which Te rich phases are microscopically dispersed in complex compound semiconductor phases, and extending directions of C face of most of crystal grains are uniformly oriented. The raw thermoelectric semiconductor materials 10 are layered in the direction of the plate thickness. And the layered body is solidified and formed to form a compact 12. After that, the compact 12 is plastically deformed in such a manner that a shear force is applied in a uniaxial direction that is approximately parallel to the main layering direction of the raw thermoelectric semiconductor materials 10. As a result, a thermoelectric semiconductor 17 having crystal orientation in which extending direction of C face and the direction of c-axis of the hexagonal structure are approximately aligned. As a result, the crystalline orientation is improved, and the thermoelectric Figure-of-Merit is increased.
摘要:
The present invention demonstrates that weak scattering of carriers leads to a high mobility and therefore helps achieve low electric resistivity with high Seebeck coefficient for a thermoelectric material. The inventors demonstrate this effect by obtaining a thermoelectric figure of merit, zT, higher than 1.3 at high temperatures in n-type PbSe, because of the weak scattering of carriers in the conduction band as compared with that in the valence band. The invention further demonstrates favorable thermoelectric transport properties of n-type PbTe1-xIx with carrier concentrations ranging from 5.8×1018-1.4×1020 cm−3.
摘要:
Disclosed herein is a method of synthesizing a nanocrystal. The method can include reacting a bismuth material, an antimony material, and a ligand together with a heat source. The method may also include injecting a sulfur precursor at a predetermined temperature and maintaining the predetermined temperature for a predetermined amount of time to form a plurality of precursor nanocrystals. The precursor nanocrystals may include Bi0.5Sb1.5S3 nanocrystals.
摘要:
Disclosed is a new thermoelectric conversion material represented by the chemical formula 1: Bi1-xCu1-yO1-zTe, where 0≦x 0. A thermoelectric conversion device using said thermoelectric conversion material has good energy conversion efficiency.
摘要翻译:公开了由化学式1:Bi1-xCu1-yO1-zTe表示的新型热电转换材料,其中0≤x≤1,0≤y≤1,0≤z≤1且x + y + z> 0。 使用所述热电转换材料的热电转换装置具有良好的能量转换效率。
摘要:
A thermoelectric converter is made of a first thermoelectric conversion material in which at least one type of second thermoelectric conversion material particles having an average size of 1 to 100 nm is dispersed. At least a part of the second thermoelectric conversion material particles is dispersed at a distance not more than the mean free path of the phonons of the first thermoelectric conversion material.
摘要:
To provide a wireless power supply device and a wireless power supply method capable of supplying electric power by a wireless system, using a means other than radio waves. This wireless power supply device of the present invention is provided with (A) a thermoelectric generation device which performs thermoelectric generation in response to the change in atmospheric temperature, and (B) a temperature control device which periodically changes the atmospheric temperature of the thermoelectric generation device. Further, this wireless power supply method uses a wireless power supply device provided with a thermoelectric generation device and a temperature control device, wherein the atmospheric temperature of the thermoelectric generation device is periodically changed by the temperature control device, and the thermoelectric generation device performs thermoelectric generation in response to the change in the atmospheric temperature, and the obtained power is brought to the exterior.
摘要:
Growth of thermoelectric materials in the form of quantum well superlattices on three-dimensionally structured substrates provide the means to achieve high conversion efficiency of the thermoelectric module combined with inexpensiveness of fabrication and compatibility with large scale production. Thermoelectric devices utilizing thermoelectric materials in the form of quantum well semiconductor superlattices grown on three-dimensionally structured substrates provide improved thermoelectric characteristics that can be used for power generation, cooling and other applications.
摘要:
A thermoelectric material including: a thermoelectric matrix; and a plurality of metal nanoparticles disposed in the thermoelectric matrix, wherein a difference between a work function of thermoelectric matrix and a work function of a metal particle of the metal nanoparticles is about −1.0 electron volt to about 1.0 electron volt.