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Facile Size‐controllable Aqueous Synthesis of Water Soluble CdTe/Cd(OH) 2 Core/Shell Nanoparticles with Tunable Optical Property, High Quantum Yield and Good Stability
Author(s) -
CAI ZhaoXia,
CHEN YingJun,
YAN XiuPing
Publication year - 2008
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.200890333
Subject(s) - chemistry , nanoparticle , transmission electron microscopy , cadmium telluride photovoltaics , photoluminescence , aqueous solution , quantum yield , chemical engineering , nanotechnology , hydroxide , inorganic chemistry , organic chemistry , materials science , fluorescence , optoelectronics , physics , quantum mechanics , engineering
A facile procedure was developed to prepare size‐tunable and water soluble CdTe/Cd(OH) 2 core/shell nanoparticles with high quantum yields and good stability using inexpensive inorganic precursors (CdCl 2 and elemental Te). The emission colors of the prepared CdTe/Cd(OH) 2 core/shell nanoparticles can be readily tuned from cyan to salmon pink by varying incubation time to control the growth of the Cd(OH) 2 shell onto the CdTe nanoparticles. The CdTe/Cd(OH) 2 core/shell nanoparticles were characterized by transmission electron microscopy, high‐resolution transmission electron microscopy, X‐ray powder diffraction spectrometry, photoluminescence and UV‐Vis spectrometry. The good water‐soluble nature of the CdTe/Cd(OH) 2 core/shell nanoparticles offers great potentiality for their bio‐labeling application. This approach is simple, mild and readily scaled up, affording a simple way for synthesis of size‐tunable inorganic metal hydroxide capped core/shell nanoparticles.