Analysis of high-temperature thermoelectric properties ofp-type CoSb3within a two-valence-band and two-conduction-band model

2014 ◽  
Vol 115 (20) ◽  
pp. 203716 ◽  
Author(s):  
Y. Kajikawa
Keyword(s):  
High Temperature ◽  
Valence Band ◽  
Conduction Band ◽  
Thermoelectric Properties ◽  
Band Model

scholarly journals Optimization of thermoelectric efficiency in SnTe: the case for the light band

2014 ◽  
Vol 16 (38) ◽  
pp. 20741-20748 ◽  
Author(s):  
Min Zhou ◽  
Zachary M. Gibbs ◽  
Heng Wang ◽  
Yemao Han ◽  
Caini Xin ◽  
...  
Keyword(s):  
Valence Band ◽  
Thermoelectric Properties ◽  
Band Model ◽  
Thermoelectric Efficiency ◽  
Light Band

Enhanced thermoelectric properties of SnTe are obtained by counter-doping with iodine as predicted using a two-valence-band model.

Photoluminescence and Photoluminescence Excitation Spectra of GaAs Grown Directly on Si

1986 ◽  
Vol 67 ◽  
Author(s):  
S. Zemon ◽  
S. K. Shastry ◽  
P. Norris ◽  
C. Jagannath ◽  
G. Lambert
Keyword(s):  
High Temperature ◽  
Valence Band ◽  
Conduction Band ◽  
Tensile Strain ◽  
Second Line ◽  
Photoluminescence Excitation ◽  
Excitation Spectra ◽  
Biaxial Tensile ◽  
Band Transition ◽  
Biaxial Tensile Strain

ABSTRACTThe photoluminescence of GaAs/Si grown by OMCVD has been analyzed as a function of temperature and the dominant high temperature line identified as a conduction-band-to-valence-band transition. Photoluminescence excitation spectra indicate that the transition is excitonic at 4.2 K. A second line, also identified as intrinsic, dominates the spectra below 100 K. A biaxial tensile strain is proposed to account for the two intrinsic lines through a splitting of the valence band degeneracy.

Conduction Band Parameters in GaSb from High-Temperature Transport Measurements

1972 ◽  
Vol 50 (11) ◽  
pp. 1068-1077 ◽  
Author(s):  
Joseph Basinski ◽  
Clarence C. Y. Kwan ◽  
John C. Woolley
Keyword(s):  
Magnetic Field ◽  
High Temperature ◽  
Conduction Band ◽  
Hall Coefficient ◽  
Electron Mobility ◽  
Band Model ◽  
Zero Field ◽  
A Value ◽  
Semiempirical Relation ◽  
Band Separation

Measurements of resistivity and Hall coefficient as a function of magnetic field (0–3.2 Wb/m2) and temperature (25–200 C) have been made on samples of Te-doped GaSb. The results have been analyzed in terms of a two-conduction-band model with minima at Γ1 and L1, using the method reported by Kwan et al. This analysis yields a value for the Γ1–L1 band separation of 0.097 ± 0.002 eV, when linearly extrapolated to 0 K, and a temperature coefficient of −3.4 × 10−5 eV/K. The measurements of the Hall coefficient at 0.87 Wb/m2 and the zero-field resistivity have been extended to 360 C. These data have been analyzed using a four-band model (Γ1, L1X1, and Γ15 V), thus giving the temperature dependence of electron mobility in the Γ1 and L1 bands. The electron mobility values for the L1 band have then been fitted to a semiempirical relation, obtained by assuming appropriate scattering mechanisms.

High-temperature thermoelectric properties of polycrystalline Zn1−x−yAlxTiyO ceramics

2007 ◽  
Vol 27 (2-3) ◽  
pp. 813-817 ◽  
Author(s):  
K. Park ◽  
K.Y. Ko ◽  
W.-S. Seo ◽  
W.-S. Cho ◽  
J.-G. Kim ◽  
...  
Keyword(s):  
High Temperature ◽  
Thermoelectric Properties

High-temperature thermoelectric properties of p-type skutterudites Ba0.15Yb x Co3FeSb12 and Yb y Co3FeSb9As3

2014 ◽  
Vol 50 (1) ◽  
pp. 34-39 ◽  
Author(s):  
Yongkwan Dong ◽  
Pooja Puneet ◽  
Terry M. Tritt ◽  
George S. Nolas
Keyword(s):  
High Temperature ◽  
Thermoelectric Properties ◽  
P Type

High-Temperature Thermoelectric Properties of (1 − x) SrTiO3 − (x) La1/3NbO3 Ceramic Solid Solution

2014 ◽  
Vol 44 (6) ◽  
pp. 1803-1808 ◽  
Author(s):  
Deepanshu Srivastava ◽  
F. Azough ◽  
M. Molinari ◽  
S. C. Parker ◽  
R. Freer
Keyword(s):  
Solid Solution ◽  
High Temperature ◽  
Thermoelectric Properties ◽  
Ceramic Solid Solution

Direct evaluation of hole effective mass of SnS–SnSe solid solutions with ARPES measurement

2021 ◽  
Author(s):  
Issei Suzuki ◽  
Zexin Lin ◽  
Sakiko Kawanishi ◽  
Kiyohisa Tanaka ◽  
Yoshitaro Nose ◽  
...  
Keyword(s):  
Effective Mass ◽  
Valence Band ◽  
Thermoelectric Properties ◽  
Solid Solutions ◽  
Photoemission Spectroscopy ◽  
Direct Evaluation ◽  
Hole Effective Mass ◽  
Single Crystalline ◽  
Angle Resolved Photoemission Spectroscopy ◽  
Effective Masses

Valence band dispersions of single-crystalline SnS1-xSex solid solutions were observed by angle-resolved photoemission spectroscopy (ARPES). The hole effective masses, crucial factors in determining thermoelectric properties, were directly evaluated. They decrease...

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