公开(公告)号：US10529905B2

公开(公告)日：2020-01-07

申请号：US15609057

申请日：2017-05-31

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Jin-Sang Kim ,  Seung-Hyub Baek ,  Seong-Keun Kim ,  Dow-Bin Hyun ,  Beomjin Kwon ,  Ji-Won Choi ,  Chong-Yun Kang ,  Im-Jun Roh

IPC: H05B3/00 ,  H01L35/34 ,  H01L35/16 ,  B28B3/20 ,  B28B11/16 ,  B28B11/24 ,  B28B17/00

Abstract: A method for manufacturing a thermoelectric material is provided. According to the method, a first shaped body is formed from a thermoelectric powder, of which a crystal has a layer structure. An extruded body is formed by extruding the first shaped body. A plurality of cut-off pieces are formed by cutting the extruded body along a cross-section perpendicular to an extrusion direction. A second shaped body is formed by stacking and pressing the cut-off pieces along a direction perpendicular to the extrusion direction. According to the above, a thermoelectric ability of a thermoelectric material and an efficiency for manufacturing a thermoelectric module may be improved.

公开(公告)号：US10217928B2

公开(公告)日：2019-02-26

申请号：US15158158

申请日：2016-05-18

Applicant: Korea Institute of Science and Technology

Inventor： Chong Yun Kang ,  Seok Jin Yoon ,  Jin Sang Kim ,  Ji-Won Choi ,  Seung Hyub Baek ,  Seong Keun Kim ,  Woo-Suk Jung ,  Beomjin Kwon

IPC: H01L41/02 ,  H01L41/113

Abstract: Disclosed is a curved piezoelectric device maximizing an electrical potential of the piezoelectric material corresponding to an external mechanical stress. The curved piezoelectric device includes: a curved substrate; and a piezoelectric material provided on one surface or both surfaces of the curved substrate, wherein when a stress is applied, a neutral plane in which a compressive stress and a tensile stress are balanced is located in the curved substrate, wherein the location of the neutral plane is determined by y1 and y2 of Equation 1 or 2 below, and wherein the location of the neutral plane is controllable by adjusting a thickness (d), a sectional area (A) and a Young's modulus (E) of each of the curved substrate and the piezoelectric material: wherein y 1 = E 2 ⁢ d 2 ⁡ ( d 1 + d 2 ) 2 ⁢ ( E 1 ⁢ d 1 + E 2 ⁢ d 2 ) , y 2 = E 1 ⁢ d 1 ⁡ ( d 1 + d 2 ) 2 ⁢ ( E 1 ⁢ d 1 + E 2 ⁢ d 2 ) ⁢ ⁢ and Equation ⁢ ⁢ 1 y 1 = E 2 ⁢ A 2 ⁡ ( A 1 + A 2 ) 2 ⁢ ( E 1 ⁢ A 1 + E 2 ⁢ A 2 ) , y 2 = E 1 ⁢ A 1 ⁡ ( A 1 + A 2 ) 2 ⁢ ( E 1 ⁢ A 1 + E 2 ⁢ A 2 ) . Equation ⁢ ⁢ 2

公开(公告)号：US20180138386A1

公开(公告)日：2018-05-17

申请号：US15609057

申请日：2017-05-31

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Jin-Sang KIM ,  Seung-Hyub Baek ,  Seong-Keun Kim ,  Dow-Bin Hyun ,  Beomjin Kwon ,  Ji-Won Choi ,  Chong-Yun Kang ,  Im-Jun Roh

IPC: H01L35/34 ,  H01L35/16

Abstract: A method for manufacturing a thermoelectric material is provided. According to the method, a first shaped body is formed from a thermoelectric powder, of which a crystal has a layer structure. An extruded body is formed by extruding the first shaped body. A plurality of cut-off pieces are formed by cutting the extruded body along a cross-section perpendicular to an extrusion direction. A second shaped body is formed by stacking and pressing the cut-off pieces along a direction perpendicular to the extrusion direction. According to the above, a thermoelectric ability of a thermoelectric material and an efficiency for manufacturing a thermoelectric module may be improved