Formation of ZnS/SiO2 nanocables

Fan, Xia; Meng, Xiang-Min; Zhang, Xiao-Hong; Wu, Shi-Kang; Lee, Shuit-Tong
April 2005
Applied Physics Letters;4/25/2005, Vol. 86 Issue 17, p173111
Academic Journal
Nanometer-sized coaxial cables with a single-crystal ZnS core and a thin amorphous SiO2 shell were synthesized by simple thermal evaporation in vacuum. As-fabricated ZnS/SiO2 nanocables were studied using scanning electron microscopy, x-ray diffraction and transmission electron microscopy. The ZnS/SiO2 nanocables have diameters of ∼50 nm, lengths of several tens of micrometers, and shell thickness of ∼4 nm. The core of the nanocable has a wurtzite structure with a growth direction along [001]. The nanocables show strong photoluminescence with two peaks related to band gap and defect-related emission.


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