Electronic structure engineering of tin telluride through co-doping of bismuth and indium for high performance thermoelectrics: a synergistic effect leading to a record high room temperature ZT in tin telluride

2019 ◽  
Vol 7 (16) ◽  
pp. 4817-4821 ◽  
Author(s):  
U. Sandhya Shenoy ◽  
D. Krishna Bhat

Resonance states due to Bi and In co-doping, band gap enlargement, and a reduced valence-band offset in SnTe lead to a record high room-temperature ZT.

2021 ◽  
Vol 2 (19) ◽  
pp. 6267-6271 ◽  
Author(s):  
U. Sandhya Shenoy ◽  
D. Krishna Bhat

Extraordinary tuning of electronic structure of SnTe by Bi in the presence of Pb as a co-adjuvant dopant. Synergistic effect of resonance level, increase in the band gap, valence and conduction sub-bands convergence leads to enhanced TE performance.


2020 ◽  
Vol 44 (41) ◽  
pp. 17664-17670
Author(s):  
D. Krishna Bhat ◽  
U. Sandhya Shenoy

Electronic-structure engineering of GeTe:Zn doping enhances thermoelectric properties via synergy of resonance states, increase in band gap and hyper-convergence.


2019 ◽  
Vol 1 (7) ◽  
pp. 2606-2611 ◽  
Author(s):  
Xuan-Ze Li ◽  
Yi-Fan Wang ◽  
Jing Xia ◽  
Xiang-Min Meng

Vertical heterostructures based on two-dimensional (2D) layered materials are ideal platforms for electronic structure engineering and novel device applications.


Author(s):  
Ruozhen Wu ◽  
Juanyuan Hao ◽  
Tingting Wang ◽  
Shengliang Zheng ◽  
You Wang

Carbon-doping mediated synergistic effect of energy-band modification and vacancy provides a new solution for developing high-performance LMDs-based gas sensors.


1997 ◽  
Vol 491 ◽  
Author(s):  
G. Allan ◽  
C. Delerue ◽  
M. Lannoo

ABSTRACTThe electronic structure of a continuous network model of tetrahedrally bonded amorphous silicon (a-Si) and of a model hydrogenated amorphous silicon (a-Si:H) that we have built from the a-Si model are calculated in the tight binding approximation. The band edges near the gap are characterized by exponential tails of localized states induced mainly by the variations in bond angles. The spatial localization of the states is compared between a-Si and a-Si:H. Valence band offset between the amorphous and the crystalline phases is calculated.


2018 ◽  
Vol 30 (50) ◽  
pp. 1804858 ◽  
Author(s):  
Ying Xie ◽  
Fei Liang ◽  
Dong Wang ◽  
Shumeng Chi ◽  
Haohai Yu ◽  
...  

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