Chin. J. Semicond. > 2007, Volume 28 > Issue 4 > 553-557

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Synthesis and Electrical Transmission Characteristics of Type-I Ba8Ga16ZnxSi30-x Clathrates

Deng Shukang, Tang Xinfeng, Xiong Cong and Zhang Qingjie

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Abstract: Si-clathrate compounds,n-type Ba8Ga16ZnxSi30-x(x=0,1,2,3,4),are synthesized by using the solid-state reaction method and the melting method.The effects of the replacement of Si with Zn on the structure and the electrical transmission characteristics are investigated for n-type Ba8Ga16ZnxSi30-x.The results indicate that the sample with the value of x =1 has the maximal bond angle distortion Δθ,Δθ=4.4. .The electrical conductivity of samples with x=0,2,4 is higher than that of samples with x=1,3.Among the samples,the electrical conductivity of Ba8Ga16Zn1Si29 is the lowest.The samples with x=0,2,4 exhibit a higher Seebeck coefficient than that of samples with x=1,3,and the value of the Seebeck coefficient decreases with the increase of the Zn composition.The power factor of Ba8Ga16Zn2Si28 compound is as large as 1.03e-3W/(m·K2) at 1000K.

Key words: type-I clathrate Seebeck coefficient electrical conductivity

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    Received: 18 August 2015 Revised: 16 November 2006 Online: Published: 01 April 2007

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      Deng Shukang, Tang Xinfeng, Xiong Cong, Zhang Qingjie. Synthesis and Electrical Transmission Characteristics of Type-I Ba8Ga16ZnxSi30-x Clathrates[J]. Journal of Semiconductors, 2007, 28(4): 553-557. ****Deng S K, Tang X F, Xiong C, Zhang Q J. Synthesis and Electrical Transmission Characteristics of Type-I Ba8Ga16ZnxSi30-x Clathrates[J]. Chin. J. Semicond., 2007, 28(4): 553.
      Citation:
      Deng Shukang, Tang Xinfeng, Xiong Cong, Zhang Qingjie. Synthesis and Electrical Transmission Characteristics of Type-I Ba8Ga16ZnxSi30-x Clathrates[J]. Journal of Semiconductors, 2007, 28(4): 553-557. ****
      Deng S K, Tang X F, Xiong C, Zhang Q J. Synthesis and Electrical Transmission Characteristics of Type-I Ba8Ga16ZnxSi30-x Clathrates[J]. Chin. J. Semicond., 2007, 28(4): 553.

      Synthesis and Electrical Transmission Characteristics of Type-I Ba8Ga16ZnxSi30-x Clathrates

      • Received Date: 2015-08-18
      • Accepted Date: 2006-10-15
      • Revised Date: 2006-11-16
      • Published Date: 2007-04-09

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