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Back Cover: One‐pot synthesis of homogeneous CdSe x S 1− x alloyed quantum dots with tunable composition in a green N‐oleoylmorpholine solvent (Phys. Status Solidi A 2/2012)
Author(s) -
Wang Binbin,
Jiang Yang,
Liu Chao,
Lan Xinzheng,
Liu Xinmei,
Wang Wenjun,
Duan Hongyan,
Zhang Yugang,
Li Shanying,
Zhang Zhongping
Publication year - 2012
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.201290001
Subject(s) - quantum dot , homogeneous , cover (algebra) , composition (language) , solvent , materials science , nanotechnology , chemical engineering , chemistry , physics , organic chemistry , thermodynamics , engineering , linguistics , philosophy , mechanical engineering
Yang Jiang and co‐workers report a one‐pot route for producing homogeneous CdSe x S 1‐ x ternary alloyed quantum dots (QDs) with zinc‐blende structure in a green and low‐cost solvent of N‐oleoylmorpholine (see pp. 306–312 ). Tunable emission, dependent on composition, has been systematically demonstrated to span 450–610 nm over the composition range x = 0‐1. As shown by the cover image, the as‐prepared CdSe x S 1‐ x QDs exhibit sharp photoluminescence emission features and various colors. High‐resolution transmission electron microscopy and fast Fourier transform pattern (indicated by the background images) suggest that the as‐prepared ternary QDs possess high crystallinity. At a certain Se/S feed mole ratio, the stoichiometric ratio of the ternary QDs keeps at a steady value, making it possible and reproducible to prepare composition‐controlled alloyed QDs. This approach could be adopted to synthesize other ternary QDs with band gaps and properties varying with composition while maintaining a small size.