Thermoelectric properties of Bi0.5Sb1.5Te3 thin films grown by pulsed laser deposition

2015 ◽  
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pp. 138-142 ◽  
Author(s):  
E. Symeou ◽  
M. Pervolaraki ◽  
C.N. Mihailescu ◽  
G.I. Athanasopoulos ◽  
Ch. Papageorgiou ◽  
...  
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Majid Kabiri Samani ◽  
Narjes Khosravian ◽  
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Abstract


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Shun Higomo ◽  
Michihiro Ohta ◽  
Atsushi Yamamoto ◽  
Kazuo Ueno ◽  
...  

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Shun Higomo ◽  
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...  

AbstractBi2Te3-based thin films were fabricated on glass substrates by the pulsed laser deposition (PLD) method. The vapor pressures of Bi and Te are significantly different, so controlling the stoichiometric composition is difficult when using conventional physical vapor deposition techniques, and the thermoelectric properties of Bi2Te3 films are sensitive to the film composition. PLD is a promising technique for the fabrication of telluride-based films such as Bi2Te3 due to its superior capability for controlling the film composition. Another advantage of PLD is the flexibility that it allows in terms of atmosphere in the reaction chamber; high concentrations of gases such as oxygen or argon can be introduced. We have measured various compositions of Bi2Te3 based films, and have identified the optimal compositions for both n-type and p-type material. The thermal conductivities of these Bi2Te3 films were evaluated by an exact measuring system, and the results were twice as low as those of conventional bulk materials. These results suggest that PLD has significant advantages for the deposition of in-plane Bi2Te3-based thin films.


2006 ◽  
Vol 126 (5) ◽  
pp. 369-373 ◽  
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Yutaka Yoshida ◽  
Tomoki Yoshikawa ◽  
Yusuke Ichino ◽  
Yoshiaki Takai

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Shu-Fang Wang ◽  
Fu-Qiang Liu ◽  
Guo-Ying Yan ◽  
Jing-Chun Chen ◽  
...  

2009 ◽  
Vol 311 (16) ◽  
pp. 4123-4128 ◽  
Author(s):  
T. Sun ◽  
J. Ma ◽  
Q.Y. Yan ◽  
Y.Z. Huang ◽  
J.L. Wang ◽  
...  

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