By a News Reporter-Staff News Editor at Science Letter -- Investigators publish new report on Luminescence. According to news reporting from Takamatsu, Japan, by NewsRx journalists, research stated, "CdTe nanocrystals (NCs) were fabricated through an organic synthesis. The growth and properties of CdTe NCs depended strongly on the preparation conditions."
The news correspondents obtained a quote from the research from the National Institute of Advanced Industrial Science and Technology (NIAIST), "In a reaction system of octadecene and tetradecylphosphonic acid (TDPA), the growth was slow. CdTe NCs with cubic-like morphology were created in trioctylamine (TOA) using octadecylphosphonic acid (ODPA)-CdO or TDPA-CdO as precursors. The TOA and ODPA system gives rise to NCs with high photoluminescence (PL) efficiencies (12%). A CdxZn1-xS shell coating on the CdTe core, gave rise to tunable dark red PL (630-670nm). The morphology and PL properties of the CdTe cores were drastically affected by shell coating and this determined the properties of CdTe/CdxZn1-xS NCs. Small CdTe NCs were easily coated with CdxZn1-xS shells. The resulting core/shell NCs revealed a spherical morphology. However, shell growth became slow when large CdTe cores were used. This is ascribed to the cores with a cubic-like morphology. CdS interlayer plays an important role for the formation of the CdTe/CdxZn1-xS NCs because the experimental result indicated it is difficult to coat CdTe NCs with a ZnS shell."
According to the news reporters, the research concluded: "The core/shell NCs benefited from a CdxZn1-xS composite shell because CdTe/CdS NCs created via a similar procedure revealed a low PL efficiency."
For more information on this research see: Dark-red-emitting CdTe/Cd1-xZnxS core/shell quantum dots: preparation and properties. Luminescence, 2013;28(5):713-718. Luminescence can be contacted at: Wiley-Blackwell, 111 River St, Hoboken 07030-5774, NJ, USA. (Wiley-Blackwell - www.wiley.com/; Luminescence - onlinelibrary.wiley.com/journal/10.1002/(ISSN)1522-7243)
Our news journalists report that additional information may be obtained by contacting P. Yang, Natl Inst Adv Ind Sci & Technol, Hlth Res Inst, Takamatsu, Kagawa 7610395, Japan (see also Luminescence).
Keywords for this news article include: Asia, Japan, Takamatsu, Luminescence, Quantum Dots, Quantum Physics
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