scholarly journals Ultra-high Seebeck coefficient and low thermal conductivity of a centimeter-sized perovskite single crystal acquired by a modified fast growth method

2017 ◽  
Vol 5 (5) ◽  
pp. 1255-1260 ◽  
Author(s):  
Tao Ye ◽  
Xizu Wang ◽  
Xianqiang Li ◽  
Alex Qingyu Yan ◽  
Seeram Ramakrishna ◽  
...  

A centimeter-sized organic–inorganic hybrid lead-based perovskite CH3NH3PbI3(MAPbI3) single crystal was obtained by using a modified fast and inverse-temperature growth method.

2015 ◽  
Vol 27 (22) ◽  
pp. 3453-3459 ◽  
Author(s):  
Kristopher J. Erickson ◽  
François Léonard ◽  
Vitalie Stavila ◽  
Michael E. Foster ◽  
Catalin D. Spataru ◽  
...  

2017 ◽  
Vol 30 (2) ◽  
pp. 484-493 ◽  
Author(s):  
Joya A. Cooley ◽  
Phichit Promkhan ◽  
Shruba Gangopadhyay ◽  
Davide Donadio ◽  
Warren E. Pickett ◽  
...  

2018 ◽  
Vol 30 (16) ◽  
pp. 5539-5543 ◽  
Author(s):  
Kejun Bu ◽  
Jian Huang ◽  
Mengjia Luo ◽  
Mengjia Guan ◽  
Chong Zheng ◽  
...  

2019 ◽  
Vol 25 (3) ◽  
pp. 174 ◽  
Author(s):  
Long Duc Bui ◽  
Khanh Van Nguyen ◽  
Binh Ngoc Duong ◽  
Thang Hong Le ◽  
Bang Thi Le ◽  
...  

<div class="page" title="Page 1"><div class="layoutArea"><div class="column"><p><span>Quaternary chalcogenide Cu</span><span>2</span><span>ZnSnS</span><span>4 </span><span>is a potential candidate for thermoelectric (TE) application due to a number of advantages including containing only non-toxic and abundant elements, high Seebeck coefficient and low thermal conductivity. In this study, Cu</span><span>2</span><span>ZnSnS</span><span>4 </span><span>was synthesized using mechanical alloying method from Cu, Zn, Sn and S powders. In order to study the effect of milling duration on the formation of Cu</span><span>2</span><span>ZnSnS</span><span>4</span><span>, different milling duration of 2, 4, 12 and 16 h were carried out. As the results, Cu</span><span>2</span><span>ZnSnS</span><span>4 </span><span>wasstarted to form after milling for 12 h. The formation of Cu</span><span>2</span><span>ZnSnS</span><span>4 </span><span>was completed after 16 h of milling. In addition, Cu</span><span>2</span><span>ZnSnS</span><span>4 </span><span>nanoparticles were obtained after 16 h of milling with the particle distribution mostly in the range of 50 - 60 nm. </span></p></div></div></div>


2000 ◽  
Vol 626 ◽  
Author(s):  
Antje Mrotzek ◽  
Kyoung-Shin Choi ◽  
Duck-Young Chung ◽  
Melissa A. Lane ◽  
John R. Ireland ◽  
...  

ABSTRACTWe present the structure and thermoelectric properties of the new quaternary selenides K1+xM4–2xBi7+xSe15 (M = Sn, Pb) and K1-xSn5-xBi11+xSe22. The compounds K1+xM4-2xBi7+xSe15 (M= Sn, Pb) crystallize isostructural to A1+xPb4-2xSb7+xSe15 with A = K, Rb, while K1-xSn5-xBi11+xSe22 reveals a new structure type. In both structure types fragments of the Bi2Te3-type and the NaCl-type are connected to a three-dimensional anionic framework with K+ ions filled tunnels. The two structures vary by the size of the NaCl-type rods and are closely related to β-K2Bi8Se13 and K2.5Bi8.5Se14. The thermoelectric properties of K1+xM4-2xBi7+xSe15 (M = Sn, Pb) and K1-xSn5-xBi11+xSe22 were explored on single crystal and ingot samples. These compounds are narrow gap semiconductors and show n-type behavior with moderate Seebeck coefficients. They have very low thermal conductivity due to an extensive disorder of the metal atoms and possible “rattling” K+ ions.


2003 ◽  
Vol 793 ◽  
Author(s):  
Y. Amagai ◽  
A. Yamamoto ◽  
C. H. Lee ◽  
H. Takazawa ◽  
T. Noguchi ◽  
...  

ABSTRACTWe report transport properties of polycrystalline TMGa3(TM = Fe and Ru) compounds in the temperature range 313K<T<973K. These compounds exhibit semiconductorlike behavior with relatively high Seebeck coefficient, electrical resistivity, and Hall carrier concentrations at room temperature in the range of 1017- 1018cm−3. Seebeck coefficient measurements reveal that FeGa3isn-type material, while the Seebeck coefficient of RuGa3changes signs rapidly from large positive values to large negative values around 450K. The thermal conductivity of these compounds is estimated to be 3.5Wm−1K−1at room temperature and decreased to 2.5Wm−1K−1for FeGa3and 2.0Wm−1K−1for RuGa3at high temperature. The resulting thermoelectric figure of merit,ZT, at 945K for RuGa3reaches 0.18.


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