Selective Synthesis of Ternary Copper鈥揂ntimony Sulfide Nanocrystals

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• 作者：Dongying Xu ; Shuling Shen ; Yejun Zhang ; Hongwei Gu ; Qiangbin Wang
• 刊名：Inorganic Chemistry
• 出版年：2013
• 出版时间：November 18, 2013
• 年：2013
• 卷：52
• 期：22
• 页码：12958-12962
• 全文大小：369K
• 年卷期：v.52,no.22(November 18, 2013)
• ISSN：1520-510X

文摘

Ternary copper鈥揳ntimony sulfide nanocrystals (CAS NCs) have attracted increasing attention in photovoltaics and photoelectric nanodevices due to their tunable band gaps in the near-IR regime. Although much progress in the synthesis of CAS NCs has been achieved, the selective synthesis of CAS NCs with controllable morphologies and compositions is preliminary: in particular, a facile method is still in demand. In this work, we have successfully selectively synthesized high-quality CAS NCs with diverse morphologies, compositions, and band gaps, including rectangular CuSbS₂ nanosheets (NSs), trigonal-pyramidal Cu₁₂Sb₄S₁₃ NCs, and rhombic Cu₃SbS₃ NSs, by cothermodecomposition of copper diethyldithiocarbamate trihydrate (Cu(Ddtc)₂) and antimony diethyldithiocarbamate trihydrate (Sb(Ddtc)₃). The direct and indirect band gaps of the obtained CAS NCs were systematically studied by performing Kubelka鈥揗unk transformations of their solid-state diffuse reflectance spectra.