scholarly journals Thermoelectric Materials: Gate‐Tunable Polar Optical Phonon to Piezoelectric Scattering in Few‐Layer Bi 2 O 2 Se for High‐Performance Thermoelectrics (Adv. Mater. 4/2021)

2021 ◽  
Vol 33 (4) ◽  
pp. 2170023
Author(s):  
Fang Yang ◽  
Jing Wu ◽  
Ady Suwardi ◽  
Yunshan Zhao ◽  
Boyuan Liang ◽  
...  
Keyword(s):  
Thermoelectric Materials ◽  
Optical Phonon ◽  
High Performance ◽  
Polar Optical Phonon

Gate‐Tunable Polar Optical Phonon to Piezoelectric Scattering in Few‐Layer Bi 2 O 2 Se for High‐Performance Thermoelectrics

2020 ◽  
pp. 2004786
Author(s):  
Fang Yang ◽  
Jing Wu ◽  
Ady Suwardi ◽  
Yunshan Zhao ◽  
Boyuan Liang ◽  
...  
Keyword(s):  
Optical Phonon ◽  
High Performance ◽  
Polar Optical Phonon

Precision grain Boundary Engineering in commercial Bi2Te2.7Se0.3 thermoelectric materials towards high performance

2021 ◽  
Author(s):  
Shuankui Li ◽  
Zhongyuan Huang ◽  
Rui Wang ◽  
Chaoqi Wang ◽  
Wenguang Zhao ◽  
...  
Keyword(s):  
Grain Boundary ◽  
Thermoelectric Materials ◽  
High Performance ◽  
General Strategy ◽  
Grain Boundary Engineering

The strong interrelation between electrical and thermo parameters have been regarded as one of the biggest bottlenecks to obtain high-performance thermoelectric materials. Therefore, to explore a general strategy to fully...

Polar Optical Phonon Instability and Intervalley Transfer in Gallium Nitride

1998 ◽  
Vol 512 ◽  
Author(s):  
B. E. Foutz ◽  
S. K. O'leary ◽  
M. S. Shur ◽  
L. F. Eastman ◽  
B. L. Gelmont ◽  
...  
Keyword(s):  
Gallium Nitride ◽  
Analytical Model ◽  
Optical Phonon ◽  
Room Temperature ◽  
Phonon Scattering ◽  
Polar Optical Phonon ◽  
Scattering Mechanism ◽  
Loss Mechanism ◽  
One Dimensional ◽  
Optical Phonon Scattering

ABSTRACTWe develop a simple, one-dimensional, analytical model, which describes electron transport in gallium nitride. We focus on the polar optical phonon scattering mechanism, as this is the dominant energy loss mechanism at room temperature. Equating the power gained from the field with that lost through scattering, we demonstrate that beyond a critical electric field, 114 kV/cm at T = 300 K, the power gained from the field exceeds that lost due to polar optical phonon scattering. This polar optical phonon instability leads to a dramatic increase in the electron energy, this being responsible for the onset of intervalley transitions. The predictions of our analytical model are compared with those of Monte Carlo simulations, and are found to be in satisfactory agreement.

scholarly journals High-performance SnSe thermoelectric materials: Progress and future challenge

2018 ◽  
Vol 97 ◽  
pp. 283-346 ◽  
Author(s):  
Zhi-Gang Chen ◽  
Xiaolei Shi ◽  
Li-Dong Zhao ◽  
Jin Zou
Keyword(s):  
Thermoelectric Materials ◽  
High Performance ◽  
Future Challenge
Sign in / Sign up

Export Citation Format

Share Document