All-inorganic water-dispersible silicon quantum dots: highly efficient near-infrared luminescence in a wide pH range
Hiroshi Sugimoto1, Minoru Fujii, Yuki Fukuda
1Department of Electrical and Electronic Engineering, Graduate School of Engineering, Kobe University, Rokkodai, Nada, Kobe 657-8501, Japan. fujii@eedept.kobe-u.ac.jp.
Nanoscale
|November 6, 2013
Abstract:
We report a novel method to prepare silicon quantum dots (Si-QDs) having excellent stability in water without organic-ligands by simultaneously doping phosphorus and boron. The codoped Si-QDs in water exhibit bright size-tunable luminescence in a biological window. The luminescence of codoped Si-QDs is very stable under continuous photoexcitation in water.


