Significance of Surface Properties of CdS Nanoparticles
Resource
Jpn. J. Appl. Phys. 42 (6A): L610-L612
Journal
Japanese Journal of Applied Physics
Journal Volume
42
Journal Issue
42
Pages
-
Date Issued
2003
Date
2003
Author(s)
Abstract
This work shows that the surface properties of nanoparticles are very important for a particle size near 5 nm in diameter or less. A simple theoretical formula is derived to quantitatively predict the size of nanoparticles for which the surface properties become significant. Experiment evidence using electroluminescence from CdS nanoparticles of 5 nm in diameter is also provided to verify the significance of the surface properties. With different processing procedures or capping layers, the surface or surface states dominate the optical characteristics of the CdS nanoparticles and sometimes play even more important roles than internal atoms.
Subjects
Capping effect; CdS; Electroluminescence; Exciton; Nanoparticles; Surface states
Other Subjects
Electroluminescence; Excitons; Nanostructured materials; Optical properties; Particle size analysis; Spin coating; Surface properties; Capping effect; Surface states; Cadmium sulfide
Type
letter
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