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Journal of Physical Chemistry C · 2015 · IF 4.772

Large-Scale Synthesis of Single Crystalline CuSb(SxSe1–x)2 Nanosheets with Tunable Composition

Yejun Zhang,Lun Li,Delu Li,Qiangbin Wang

Alloying nanocrystals with multicomponent has been an effective way to tune the band gap of semiconductor nanocrystals, which promises their wide applications in optoelectronics, photovoltaics, etc. However, colloidal synthesis of homogeneous phase multicomponent nanocrystals in a large scale remains great challenge. Here, we declare the successful preparation of single-crystalline quaternary CuSb(SxSe1–x)2 nanosheets in a facile one-pot reaction with yield >3 g. The molar ratio of S/(S + Se) in CuSb(SxSe1–x)2 could be easily tuned from 1.5% to 13.7% by increasing the reaction temperature which enhances the reactivity of S source in the reaction, and accordingly, the band gap of the obtained CuSb(SxSe1–x)2 varies from 0.9 to 1.1 eV.

CAS / MDL: 10025-91-9 112-90-3 7446-08-4

研究领域: 材料科学 · 纳米技术

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MATERIALS LETTERS · 2014 · IF 2.269

Colloidal synthesis of chalcostibite copper antimony sulfide nanocrystals

Yu Zou,Jiang Jiang

We report the colloidal synthesis of monodisperse phase pure chalcostibite CuSbS 2 nanocrystals in high boiling point solvent. The use of dodecanethiol as ligands had an advantage over oleylamine on avoiding the hydrolysis of Sb precursor. The effect of reaction temperature and Cu/Sb feed molar ratio on the synthesis of copper antimony sulfide nanocrystals in dodecanethiol system was investigated. As a result of the reactivity difference between Cu and Sb precursors, the formation of CuSbS 2 nanocrystals involves the preferential nucleation of Cu-rich nanocrystals and their subsequent reaction with remaining Sb precursors. The band gap of the resulting CuSbS 2 nanocrystals was measured to be ~1.59 eV.

研究领域: 材料化学 · 纳米科学 · 无机化学 · 半导体材料 · 胶体化学

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Large-Scale Synthesis of Single Crystalline CuSb(SxSe1–x)2 Nanosheets with Tunable Composition

Colloidal synthesis of chalcostibite copper antimony sulfide nanocrystals