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Thermal Stability and Lasing of CdS Nanowires Coated by Amorphous Silica
Author(s) -
Pan Anlian,
Wang Shiquan,
Liu Ruibin,
Li Chaorong,
Zou Bingsuo
Publication year - 2005
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.200500169
Subject(s) - lasing threshold , materials science , nanowire , coaxial , photoluminescence , thermal stability , optoelectronics , amorphous solid , coating , photonics , layer (electronics) , nanotechnology , chemical engineering , wavelength , chemistry , engineering , electrical engineering , organic chemistry
Coaxial nanowires : Single‐crystalline CdS nanowires (NWs) are successfully coated with a uniform silica layer to give coaxial structures (see TEM image). The coating improves the high‐temperature stability of the NWs and enhances their photoluminescence emission, compared with uncoated NWs. Stimulated emission and lasing occur under high‐intensity optical excitation. The surface‐modified CdS NWs have potential applications in photonic and optoelectronic fields.