ZnSe, nanocrystal synthesis

S. A. Ivanov, A. Piryatinski, J. Nanda, S. Tretiak, K. R. Zavadil, W. O. Wallace, D. Werder, V. I. Klimov, Type-II Core/Shell CdS/ZnSe Nanocrystals Synthesis, Electronic Structures, and Spectroscopic Properties. Journal of the American Chemical Society 2007,129, 11708-11719. 

The other interesting challenge from a synthetic viewpoint is the synthesis of doped QDs, particularly to study their magneto-optical properties. Doping transition metal ions in bulk as well as nanoscale semi-conductors has been an important area of study for the past couple of decades. Recent studies have further shown that for several applications, dopant associated emission from semiconductor nanocrystals may be more advantageous than the usual band-edge emission. Extensive attempts have been made to dope intentional impurities in various semiconductor nanocrystals, including those in ZnSe, ... 

Fang Z, Li Y, Zhang H, Zhong X, Zhu L (2009) Facile synthesis of highly luminescent UV-blue-emitting ZnSe/ZnS core/shell nanocrystals in aqueous media. J Phys Chem C 113 14145... 

The hot-soup method has also been applied to the production of semiconductor core/shell nanostructures, where a semiconductor nanocrystal is coated with a second semiconductor of wider bandgap. Shown in Figure 23 is a scheme for the synthesis of CdSe/CdS core/shell nanocrystals. These nanostructures were synthesized via a high-temperature route in a mixture of TOP and TOPO (223,224) and via a low-temperature route in pyridine (225). Among the semiconductor core/shell nanomaterials produced were CdSe/ZnS, CdSe/CdS, InAs/InP, InAs/CdSe, InAs/ZnSe, and InAs/ZnS (223,225-228). In these structures, the shell type and thickness allow further control of the optical, electronic, and other properties of semiconductor nanocrystals. For example, the shell may be used to passivate the imperfect surface of the core semiconductor, resulting in significantly improved luminescence efficiency. 

S.K. Tripathi, M. Sharma, Synthesis and optical study of green light emitting polymer coated CdSe/ZnSe core/shell nanocrystals. Mater. Research Bulletin 48 (2013) 1837-1844. 

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