Synergetic effect of grain size reduction on electronic and thermal transport properties by selectively-suppressed minority carrier mobility and enhanced boundary scattering in Bi0.5Sb1.5Te3 alloys

2019 ◽  
Vol 160 ◽  
pp. 15-19 ◽  
Author(s):  
Kyu Hyoung Lee ◽  
Weon Ho Shin ◽  
Hyun-Sik Kim ◽  
Kimoon Lee ◽  
Jong Wook Roh ◽  
...  
Keyword(s):  
Grain Size ◽  
Transport Properties ◽  
Thermal Transport ◽  
Carrier Mobility ◽  
Minority Carrier ◽  
Synergetic Effect ◽  
Size Reduction ◽  
Boundary Scattering ◽  
Thermal Transport Properties ◽  
Minority Carrier Mobility

scholarly journals Ti Addition Effect on the Grain Structure Evolution and Thermoelectric Transport Properties of Hf0.5Zr0.5NiSn0.98Sb0.02 Half-Heusler Alloy

Materials ◽  
2021 ◽  
Vol 14 (14) ◽  
pp. 4029
Author(s):  
Junsang Cho ◽  
Taegyu Park ◽  
Ki Wook Bae ◽  
Hyun-Sik Kim ◽  
Soon-Mok Choi ◽  
...  
Keyword(s):  
Grain Size ◽  
Transport Properties ◽  
Thermal Transport ◽  
Synergetic Effect ◽  
Structure Evolution ◽  
Measured Temperature ◽  
Thermoelectric Transport ◽  
Thermal Transport Properties ◽  
Thermoelectric Transport Properties ◽  
Ti Addition

Compositional tuning is one of the important approaches to enhance the electronic and thermal transport properties of thermoelectric materials since it can generate point defects as well as control the phase evolution behavior. Herein, we investigated the Ti addition effect on the grain growth during melt spinning and thermoelectric transport properties of Hf0.5Zr0.5NiSn0.98Sb0.02 half-Heusler compound. The characteristic grain size of melt-spun ribbons was reduced by Ti addition, and very low lattice thermal conductivity lower than 0.27 W m−1 K−1 was obtained within the whole measured temperature range (300–800 K) due to the intensified point defect (substituted Ti) and grain boundary (reduced grain size) phonon scattering. Due to this synergetic effect on the thermal transport properties, a maximum thermoelectric figure of merit, zT, of 0.47 was obtained at 800 K in (Hf0.5Zr0.5)0.8Ti0.2NiSn0.98Sb0.02.

Tailoring the thermal transport properties of monolayer hexagonal boron nitride by grain size engineering

2D Materials ◽  
2019 ◽  
Vol 7 (1) ◽  
pp. 015031
Author(s):  
Hao Ying ◽  
Arden Moore ◽  
Jie Cui ◽  
Yaoyao Liu ◽  
Deshuai Li ◽  
...  
Keyword(s):  
Grain Size ◽  
Boron Nitride ◽  
Transport Properties ◽  
Thermal Transport ◽  
Hexagonal Boron Nitride ◽  
Thermal Transport Properties

DOPING EFFECTS ON THERMAL TRANSPORT PROPERTIES OF PEDOT

2018 ◽  
Author(s):  
Xiaoxiang Yu ◽  
Ruiyang Li ◽  
Takuma Shiga ◽  
Lei Feng ◽  
Junichiro Shiomi ◽  
...  
Keyword(s):  
Transport Properties ◽  
Thermal Transport ◽  
Thermal Transport Properties ◽  
Doping Effects

Effects of spin-phonon coupling on two-dimensional ferromagnetic semiconductors: a case study of iron and ruthenium trihalides

Nanoscale ◽  
2021 ◽  
Author(s):  
Yinqiao Liu ◽  
Qinxi Liu ◽  
Ying Liu ◽  
Xue Jiang ◽  
Xiaoliang Zhang ◽  
...  
Keyword(s):  
Transport Properties ◽  
Data Security ◽  
Thermal Transport ◽  
Magnetic Semiconductors ◽  
Ferromagnetic Semiconductors ◽  
Two Dimensional ◽  
Phonon Coupling ◽  
Thermal Transport Properties

The contributions of spin-phonon coupling (SPC) to spin and thermal transport properties are important in the emerging two-dimensional (2D) magnetic semiconductors and are relevant for the data security and working...

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