All-Inorganic Near-Infrared Luminescent Colloidal Silicon Nanocrystals: High Dispersibility in Polar Liquid by Phosphorus and Boron Codoping

作者：Sugimoto Hiroshi; Fujii Minoru^*; Imakita Kenji; Hayashi Shinji; Akamatsu Kensuke

来源：Journal of Physical Chemistry C, 2012, 116(33): 17969-17974.

DOI：10.1021/jp305832x

We demonstrate the formation of a new type of surfactant-free colloidal silicon nanocrystal (Si-NC) The characteristic structural feature of the Si-NCs is simultaneous doping of phosphorus (P) and boron (B) in and on the surface of Si-NCs. The codoped Si-NCs are stable in methanol for more than a year and exhibit luminescence in the near-infrared range. We perform comprehensive studies on the structure of codoped colloidal Si-NCs and discuss the mechanism of the high solution dispersibility.

• 出版日期2012-8-23