通过硫硒比例和晶体结构对单分散 Cu(2-x)S(y)Se(1-y) 纳米晶进行能隙工程。
Bandgap engineering of monodispersed Cu(2-x)S(y)Se(1-y) nanocrystals through chalcogen ratio and crystal structure.
机构信息
Key Laboratory of Molecular Nanostructure and Nanotechnology, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
出版信息
J Am Chem Soc. 2011 Nov 23;133(46):18558-61. doi: 10.1021/ja208043g. Epub 2011 Oct 31.
Bandgap engineering is important in light-absorption optimization of nanocrystals (NCs) for applications such as highly efficient solar cells. Herein, a facile one-pot method is developed to synthesize monodispersed ternary alloyed copper sulfide selenide (Cu(2-x)S(y)Se(1-y)) NCs with tunable composition, structure, and morphology. The energy bandgaps can be tuned with the chalcogen ratio, and the crystal structure of the NCs is found to produce an effect on their bandgap and light absorption. The results are significant in bandgap engineering of semiconductor NCs.
能带工程在优化纳米晶体（NCs）的光吸收方面非常重要，这对于高效太阳能电池等应用来说至关重要。在此，开发了一种简便的一锅法来合成具有可调组成、结构和形态的单分散三元合金铜硫化硒（Cu(2-x)S(y)Se(1-y)）NCs。通过调节硫硒比例可以调节能隙，并且发现 NCs 的晶体结构对其能隙和光吸收有影响。这些结果对于半导体 NCs 的能带工程具有重要意义。
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