The methods of luminescence microscopy have been used to study the morphology of self-organized structures composed of CdTe and CdSe/ZnS quantum dots obtained during the controlled drying of solutions of these substances on hydrophilic and hydrophobic surfaces. Local concentrations of quantum dots that are appreciably smaller than is possible when they are close-packed are estimated in dendritic structures. It is found that additional components of the solution of quantum dots can independently form dendritic structures in which the quantum dots can be incorporated. Based on an analysis of the luminescence spectra, it is shown that the quantum dots become spatially separated by size in various types of structures.
© 2011 OSA
Original Manuscript: May 25, 2011
Published: November 30, 2011
V. E. Adrianov, V. G. Maslov, A. V. Baranov, A. V. Fedorov, and M. V. Artem’ev, "Spectral study of the self-organization of quantum dots during the evaporation of colloidal solutions," J. Opt. Technol. 78, 699-705 (2011)