Thermoelectric Properties on SixGe1-x Containing Fullerite

2007 ◽  
Vol 280-283 ◽  
pp. 409-412 ◽  
Author(s):  
Gui Ying Xu ◽  
Xiao Feng Wu ◽  
Li Li Zhang ◽  
Chang Chun Ge
Keyword(s):  
Quantum Dot ◽  
Thermoelectric Property ◽  
Thermoelectric Properties ◽  
Thermoelectric Material ◽  
Analytical Method ◽  
Hot Pressing ◽  
Thermoelectric Generator ◽  
Pressing Method ◽  
Higher Temperature ◽  
P Type

SixGe1-x (x = 0.75 for n-type and 0.7 for p-type) is a typical thermoelectric material used at higher temperature as thermoelectric generator. Its property is dependent on the composition. SixGe1-x containing different amount of fullerite added as hollow quantum dot were fabricated by hot-pressing method. The relations among thermoelectric property, the amount of fullerite and the microstructure were investigated by normal measurement and analytical method.

Thermoelectric Properties on n-Type BixSb1-x /Bi2Te3 Graded Materials Containing Fullerite or Carbon Tube

2005 ◽  
Vol 475-479 ◽  
pp. 1591-1594
Author(s):  
Xiao Feng Wu ◽  
Gui Ying Xu ◽  
Si-Tong Niu ◽  
Chang Chun Ge
Keyword(s):  
Thermoelectric Property ◽  
Thermoelectric Properties ◽  
Thermoelectric Materials ◽  
Analytical Method ◽  
Hot Pressing ◽  
Graded Materials ◽  
Pressing Method ◽  
Carbon Tube ◽  
Materials Used ◽  
Lower Temperature

BixSb1-x and Bi2Te3 are typical thermoelectric materials used for lower temperature. Samples of Graded materials containing different amount of fullerite or nanometer carbon tube and the were fabricated by hot pressing method. The relations about thermoelectric property, the addition of fullerite or nanometer carbon tube, and the microstructure were investigated in detail by normal measurement or analytical method.

Thermoelectric properties of p-type (Bi,Sb)2Te3 alloys fabricated by the hot pressing method

1998 ◽  
Vol 4 (1) ◽  
pp. 75-81 ◽  
Author(s):  
Hee-Jeong Kim ◽  
Hang-Chong Kim ◽  
Dow-Bin Hyun ◽  
Tae-Sung Oh
Keyword(s):  
Thermoelectric Properties ◽  
Hot Pressing ◽  
Pressing Method ◽  
P Type

High-boron p-type silicon germanium thermoelectric material prepared by the vacuum casting and hot pressing method

1993 ◽  
Author(s):  
Stephen Loughin ◽  
Dominick X. Centurioni ◽  
Arch G. Robison ◽  
John J. Maley ◽  
Jean-Pierre Fleurial
Keyword(s):  
Thermoelectric Material ◽  
Silicon Germanium ◽  
Hot Pressing ◽  
Pressing Method ◽  
Vacuum Casting ◽  
Type Silicon ◽  
High Boron ◽  
P Type

Annealing Effect on the Thermoelectric Properties of Undoped CoSb3

2006 ◽  
Vol 118 ◽  
pp. 565-570 ◽  
Author(s):  
Il Ho Kim ◽  
Jung Il Lee ◽  
Soon Chul Ur ◽  
Kyung Wook Jang ◽  
Good Sun Choi ◽  
...  
Keyword(s):  
Phase Transformation ◽  
Phase Transitions ◽  
Thermoelectric Properties ◽  
Hot Pressing ◽  
Annealing Effect ◽  
Metallic Behavior ◽  
Arc Melting ◽  
P Type ◽  
Type Conduction

Binary skutterudite CoSb3 compounds were prepared by the arc melting and hot pressing processes and their thermoelectric properties were investigated at 300K-600K. Annealing effect was examined and it was correlated to phase transformation and homogenization. Thermoelectric properties of the arc-melted and hot-pressed CoSb3 were discussed and compared. Undoped CoSb3 prepared by the arc melting showed p-type conduction and metallic behavior at all temperatures examined. However, hot pressed specimens showed n-type conduction, possibly due to Sb evaporation. Thermoelectric properties were remarkably improved by annealing in vacuum and they were closely related to phase transitions.

Thermoelectric properties of the 0.05 wt.% SbI3-Doped n-Type Bi2(Te0. 95Se0. 05)3 alloy fabricated by the hot pressing method

2000 ◽  
Vol 6 (1) ◽  
pp. 67-71 ◽  
Author(s):  
Sun Kyung Lee ◽  
Tae Sung Oh ◽  
Dow Bin Hyun ◽  
Chang Won Hwang
Keyword(s):  
Thermoelectric Properties ◽  
Hot Pressing ◽  
Pressing Method

Thermoelectric Properties of Co1-xNbxSb3 Prepared by Induction Melting

2005 ◽  
Vol 486-487 ◽  
pp. 602-605 ◽  
Author(s):  
J.B. Park ◽  
S.-W. You ◽  
K.W. Cho ◽  
J.I. Lee ◽  
Soon Chul Ur ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Thermoelectric Properties ◽  
Induction Melting ◽  
Thermoelectric Power Factor ◽  
Seebeck Coefficients ◽  
Maximum Value ◽  
High Temperature Maximum ◽  
Higher Temperature ◽  
Nb Doping ◽  
P Type

Induction melting was attempted to prepare the undoped and Nb-doped CoSb3 compounds, and their thermoelectric properties were investigated. Single phase d-CoSb3 was successfully obtained by induction melting and subsequent annealing at 400°C for 2 hours in vacuum. The positive signs of Seebeck coefficients for all the specimens revealed that Nb atoms acted as p-type dopants by substituting Co atoms. Electrical conductivity decreased and then increased withincreasing temperature, indicating mixed behaviors of metallic and semiconducting conductions. Electrical conductivity increased by Nb doping, and it was saturated at high temperature. Maximum value of the thermoelectric power factor was shifted to higher temperature with the increasing amount of Nb doping, mainly originated from the Seebeck coefficient variation.

Microstructure and thermoelectric properties of p-type Bi0.5Sb1.5Te3 fabricated by hot pressing

1997 ◽  
pp. 539-543
Author(s):  
Doo-Myun Lee ◽  
Jun-Ho Seo ◽  
Chi-Hwan Lee ◽  
Kyeongsoon Park ◽  
Ichiro Shiota
Keyword(s):  
Thermoelectric Properties ◽  
Hot Pressing ◽  
P Type
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