Temperature Dependence of “Elementary Processes” in Doping Semiconductor Nanocrystals
Journal of the American Chemical Society2009Vol. 131(26), pp. 9333–9339
Citations Over TimeTop 10% of 2009 papers
Abstract
Controlled doping is a critical step toward various unique nanostructures. This report shall demonstrate that doping chemistry of colloidal nanocrystals is much more complex than what has been proposed in the existing experimental and theoretical reports. Four individual processes, namely "surface adsorption", "lattice incorporation", "lattice diffusion", and "lattice ejection", will be identified, each of which possesses its own critical temperature. A given type of host nanocrystals can be switched from being impossible to dope to becoming successfully doped. The key is to program the reaction temperature to accommodate all elementary processes.
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