scholarly journals Na-Doping Effects on Thermoelectric Properties of Cu2−xSe Nanoplates

2017 ◽  
Vol 8 (1) ◽  
pp. 12 ◽  
Author(s):  
Yingshi Jin ◽  
Mi-Kyung Han ◽  
Sung-Jin Kim
Keyword(s):  
Thermoelectric Properties ◽  
Na Doping ◽  
Doping Effects

Doping effects of Mg for In on the thermoelectric properties of β-In2S3 bulk samples

2017 ◽  
Vol 695 ◽  
pp. 1631-1636 ◽  
Author(s):  
Yue Xing Chen ◽  
Akio Yamamoto ◽  
Tsunehiro Takeuchi
Keyword(s):  
Thermoelectric Properties ◽  
Doping Effects

High temperature thermoelectric properties of Bi2−xNaxSr2Co2Oy ceramics

2015 ◽  
Vol 29 (27) ◽  
pp. 1550159 ◽  
Author(s):  
Q. L. He ◽  
S. Y. Li ◽  
F. Gao ◽  
Z. Zhu ◽  
X. Hu ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
High Temperature ◽  
Thermoelectric Properties ◽  
Hole Doping ◽  
Doping Amount ◽  
Seebeck Coefficients ◽  
Na Doping ◽  
Electrical Conductivity Behavior ◽  
Lower Temperature ◽  
Conductivity Behavior

The Na doping effects on the high temperature thermoelectric properties of [Formula: see text] ([Formula: see text] = 0, 0.05, 0.10, 0.15, 0.20 and 0.30) ceramics were investigated from 343 K to 973 K. When [Formula: see text], the electrical resistivity of [Formula: see text] decreases with increasing Na doping amount due to the hole-doping effect, which exhibits metallic electrical conductivity behavior. While, at the temperature range of 480–830 K, the samples with [Formula: see text] exhibit semiconductor electrical conductivity behavior instead. The Seebeck coefficients are improved by Na doping at lower temperature, but they decrease slightly at higher temperature except for [Formula: see text]. Roughly, the thermal conductivity is depressed by the doping defects. As an overall result, the dimensionless figure of merit [Formula: see text] of [Formula: see text] reaches the maximum value of 0.3 K at 973 K, which is nearly twice the value of the undoped sample [Formula: see text].

Exploring the doping effects of copper on thermoelectric properties of lead selenide

2016 ◽  
Vol 49 (28) ◽  
pp. 285104 ◽  
Author(s):  
Chhatrasal Gayner ◽  
Raghunandan Sharma ◽  
Iram Mallik ◽  
Malay K Das ◽  
Kamal K Kar
Keyword(s):  
Thermoelectric Properties ◽  
Lead Selenide ◽  
Doping Effects

Doping Effects on the Thermoelectric Properties of Cu3SbSe4

2011 ◽  
Vol 3 (4) ◽  
pp. 602-606 ◽  
Author(s):  
Eric J. Skoug ◽  
Jeffrey D. Cain ◽  
Paul Majsztrik ◽  
Melanie Kirkham ◽  
Edgar Lara-Curzio ◽  
...  
Keyword(s):  
Thermoelectric Properties ◽  
Doping Effects

Thermoelectric Properties of SnS with Na-Doping

2017 ◽  
Vol 9 (39) ◽  
pp. 34033-34041 ◽  
Author(s):  
Binqiang Zhou ◽  
Shuai Li ◽  
Wen Li ◽  
Juan Li ◽  
Xinyue Zhang ◽  
...  
Keyword(s):  
Thermoelectric Properties ◽  
Na Doping

BaCu2Se2 based compounds as promising thermoelectric materials

2015 ◽  
Vol 44 (5) ◽  
pp. 2285-2293 ◽  
Author(s):  
Jing Li ◽  
Li-Dong Zhao ◽  
Jiehe Sui ◽  
David Berardan ◽  
Wei Cai ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Electrical Conductivity ◽  
Thermoelectric Properties ◽  
Thermoelectric Materials ◽  
Low Thermal Conductivity ◽  
Na Doping

The thermoelectric properties of Na doped BaCu2Se2 were studied. The electrical conductivity of BaCu2Se2 was increased by 2 orders of magnitude through Na doping at the Ba sites, combined with a surprisingly low thermal conductivity; a ZT of 1.0 has been obtained for Ba0.925Na0.075Cu2Se2 at 773 K.

Enhancement of thermoelectric properties by Na doping in Te-free p-type AgSbSe2

2015 ◽  
Vol 44 (3) ◽  
pp. 1046-1051 ◽  
Author(s):  
Songting Cai ◽  
Zihang Liu ◽  
Jianyong Sun ◽  
Rui Li ◽  
Weidong Fei ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Carrier Concentration ◽  
Thermoelectric Properties ◽  
Point Defects ◽  
Power Factor ◽  
Stacking Faults ◽  
Na Doping ◽  
P Type

Na substituting Sb in the AgSbSe2 not only improves the power factor caused by the enhanced carrier concentration, but also decreases the thermal conductivity due to point defects, nanoscale stacking faults and Na-rich precipitate. Consequently, a high ZT value of 0.92 is achieved in the AgSb0.99Na0.01Se2 sample.

Doping effects on the thermoelectric properties of Cu-intercalated Bi2Te2.7Se0.3

2015 ◽  
Vol 15 (3) ◽  
pp. 190-193 ◽  
Author(s):  
Kyu Hyoung Lee ◽  
Soon-Mok Choi ◽  
Sang Il Kim ◽  
Jong Wook Roh ◽  
Dae Jin Yang ◽  
...  
Keyword(s):  
Thermoelectric Properties ◽  
Doping Effects
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