Heterovalent-Doping-Enabled Efficient Dopant Luminescence and Controllable Electronic Impurity Via a New Strategy of Preparing II-VI Nanocrystals

20-04-2015

Substitutional heterovalent doping represents an effective method to control the optical and electronic properties of    nanocrystals (NCs). Here, highly monodisperse II−VI NCs with deep substitutional dopants are presented. The NCs exhibit stable, dominant, and strong dopant fluorescence, and control over n- and p-type electronic impurities has      been achieved. Large-scale, bottom-up superlattices of the NCs will speed up their application in electronic devices. The research was conducted at the SSRF beamline 14W1. 

Schematic illustration of the preparation process to achieve deep monovalent doping in II−VI NCs.