Experimental and theoretical studies of Sn3-δPbδBi2Se6 (δ=0.0-0.7)

Kuei Bo Chen, Chi-Shen Lee*

*此作品的通信作者

    研究成果: Article同行評審

    6 引文 斯高帕斯(Scopus)

    摘要

    New ternary and quaternary chalcogenides, Sn3-δPbδBi2Se6 (δ=0.0-0.7), were synthesized from pure elements using the solid-state method. Their crystal structures, determined using single crystal X-ray diffraction, belong to the orthorhombic space group Pnma (No. 62). The structure is related to Pb3Bi2S6, which contains NaCl [311] layer units and zigzag arrays of metal atoms along the c-axis. A correlation between the Pb composition and the shifted position of a metal site was observed. Band structure calculations confirmed that the structure is stabilized when the position of the M5 site is farther from the mirror plane. Thermopower and conductivity measurements indicated that all of the compounds are n-type semiconductors with small band gaps.

    原文English
    頁(從 - 到)807-813
    頁數7
    期刊Journal of Solid State Chemistry
    183
    發行號4
    DOIs
    出版狀態Published - 1 四月 2010

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