期刊
CHEMISTRY OF MATERIALS
卷 25, 期 9, 页码 1788-1792出版社
AMER CHEMICAL SOC
DOI: 10.1021/cm400320r
关键词
nanocrystals; quantum dots; colloidal synthesis; infrared materials; III-V semiconductors
资金
- Swiss National Science Foundation (SNF) [200021_140245]
- Marie Curie Co-fund (Empa postdoc program)
- ETH Zurich
- Swiss National Science Foundation (SNF) [200021_140245] Funding Source: Swiss National Science Foundation (SNF)
We report a new synthetic pathway for growing monodisperse colloidal indium antimonide nanocrystals. We propose that highly reactive element-nitrogen bonded precursors, such as In and Sb amides, may provide required nucleation and growth kinetics for the formation of uniform colloidal nanocrystals of InSb. Size-dependent absorption and emission spectra of InSb nanocrystals in the near-infrared region of 1500-2000 nm point to semiconductor behavior with quantum confinement. Furthermore, we demonstrate zinc blende/wurzite polymorphism and polytypism of In Sb nanocrystals, conveniently controlled by the In/Sb molar ratio of precursors. This amide-based synthesis route may open new opportunities for designing near- and mid-IR active III-V semiconductor nanostructures.
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