AgI alloying in SnTe boosts the thermoelectric performance via simultaneous valence band convergence and carrier concentration optimization

2016 ◽  
Vol 242 ◽  
pp. 43-49 ◽  
Author(s):  
Ananya Banik ◽  
Kanishka Biswas
Keyword(s):  
Carrier Concentration ◽  
Valence Band ◽  
Thermoelectric Performance

scholarly journals A synergistic approach to achieving the high thermoelectric performance of La-doped SnTe using resonance state and partial band convergence

2021 ◽  
Author(s):  
Ranita Basu ◽  
Mandava Srikanth ◽  
Bayikadi Khasimsaheb ◽  
Sivaiah Bathula ◽  
V. Sai Muthu Kumar ◽  
...  
Keyword(s):  
Carrier Concentration ◽  
Valence Band ◽  
Resonance State ◽  
Thermoelectric Performance ◽  
High Carrier Concentration ◽  
Synergistic Approach ◽  
High Carrier ◽  
La Doped ◽  
Very High

SnTe is an alternate variant of PbTe possessing an analogous valence band(VB) pattern. However, SnTe exhibits low thermoelectric(TE) efficiency due to Sn defects triggering very high carrier concentration (n). Thus,...

scholarly journals Enhanced thermoelectric performance through synergy of resonance levels and valence band convergence via Q/In (Q = Mg, Ag, Bi) co-doping

2018 ◽  
Vol 6 (6) ◽  
pp. 2507-2516 ◽  
Author(s):  
Li Juan Zhang ◽  
Peng Qin ◽  
Chao Han ◽  
Jian Li Wang ◽  
Zhen Hua Ge ◽  
...  
Keyword(s):  
Carrier Concentration ◽  
Valence Band ◽  
Thermoelectric Properties ◽  
Thermoelectric Performance ◽  
Chemical Doping ◽  
Co Doping ◽  
Synergetic Effects

Remarkably improved thermoelectric properties are achieved through the synergetic effects of the resonance levels, the valence band convergence, and the carrier concentration optimization by chemical doping.

scholarly journals Valence Band Modification and High Thermoelectric Performance in SnTe Heavily Alloyed with MnTe

2015 ◽  
Vol 137 (35) ◽  
pp. 11507-11516 ◽  
Author(s):  
Gangjian Tan ◽  
Fengyuan Shi ◽  
Shiqiang Hao ◽  
Hang Chi ◽  
Trevor P. Bailey ◽  
...  
Keyword(s):  
Valence Band ◽  
Thermoelectric Performance

scholarly journals Enhancement of Thermoelectric Performance in CuSbSe 2 Nanoplate‐Based Pellets by Texture Engineering and Carrier Concentration Optimization

Small ◽  
2018 ◽  
Vol 14 (50) ◽  
pp. 1803092 ◽  
Author(s):  
Yubo Luo ◽  
Chengfeng Du ◽  
Qinghua Liang ◽  
Yun Zheng ◽  
Beibei Zhu ◽  
...  
Keyword(s):  
Carrier Concentration ◽  
Thermoelectric Performance

scholarly journals Enhancing the thermoelectric performance of Cu3SnS4-based solid solutions through coordination of the Seebeck coefficient and carrier concentration

2017 ◽  
Vol 5 (35) ◽  
pp. 18808-18815 ◽  
Author(s):  
Yuanbo Yang ◽  
Pengzhan Ying ◽  
Jinzhi Wang ◽  
Xianglian Liu ◽  
Zhengliang Du ◽  
...  
Keyword(s):  
Seebeck Coefficient ◽  
Carrier Concentration ◽  
Solid Solutions ◽  
Thermoelectric Performance

Through coordination of the Seebeck coefficient and carrier concentration in Cu3SnS4, TE performance improves significantly with the ZT value of 0.75 at 790 K.

Oxygen adsorption and its influence on the thermoelectric performance of polycrystalline SnSe

2019 ◽  
Vol 7 (34) ◽  
pp. 10507-10513 ◽  
Author(s):  
Mengmeng Zhang ◽  
Dongyang Wang ◽  
Cheng Chang ◽  
Tao Lin ◽  
Kedong Wang ◽  
...  
Keyword(s):  
Carrier Concentration ◽  
Oxygen Adsorption ◽  
Thermoelectric Performance

Oxygen is adsorbed when SnSe is exposed to air and it acts as a hole-like acceptor. The thermoelectric performance of n-type polycrystalline SnSe can be promoted through optimizing carrier concentration via preventing oxygen adsorption.

scholarly journals Synergistic manifestation of band and scattering engineering in single aliovalent Sb alloyed anharmonic SnTe alloy in concurrence with rule of parsimony

2021 ◽  
Author(s):  
Ranita Basu ◽  
Mandava Srikanth ◽  
Sandhya U. Shenoy ◽  
Denthaje Krishna Bhat ◽  
Bayikadi Khasimsaheb ◽  
...  
Keyword(s):  
Valence Band ◽  
Thermoelectric Performance ◽  
Resonance States

Several endeavors were adapted to improve the thermoelectric performance of SnTe as a substitute of toxic PbTe and booming approaches comprise introduction of nanostructuring, resonance states, valence band convergence and...

Enhanced thermoelectric performance of layered SnS crystals: the synergetic effect of temperature and carrier concentration

RSC Advances ◽  
2015 ◽  
Vol 5 (69) ◽  
pp. 56382-56390 ◽  
Author(s):  
Bao-Zhen Sun ◽  
Zuju Ma ◽  
Chao He ◽  
Kechen Wu
Keyword(s):  
Carrier Concentration ◽  
Synergetic Effect ◽  
Thermoelectric Performance ◽  
Effect Of Temperature ◽  
Effects Of Temperature

The synergistic deployment of the effects of temperature and carrier concentration raises the ZT of SnS to a high value (1.61 ± 0.02).

Synergistic optimization of carrier transport and thermal conductivity in Sn-doped Cu2Te

2018 ◽  
Vol 6 (39) ◽  
pp. 18928-18937 ◽  
Author(s):  
Yuchong Qiu ◽  
Ying Liu ◽  
Jinwen Ye ◽  
Jun Li ◽  
Lixian Lian
Keyword(s):  
Thermal Conductivity ◽  
Fermi Level ◽  
Carrier Concentration ◽  
Power Factor ◽  
Carrier Transport ◽  
Lone Pair ◽  
Thermoelectric Performance ◽  
Degenerate Semiconductors ◽  
Lone Pair Electrons

Doping Sn into the Cu2Te lattice can synergistically enhance the power factor and decrease thermal conductivity, leading to remarkably optimized zTs. The lone pair electrons from the 5s orbital of Sn can increase the DOS near the Fermi level of Cu2Te to promote PF and reduce κe by decreasing the carrier concentration. This study explores a scalable strategy to optimize the thermoelectric performance for intrinsically highly degenerate semiconductors.

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