Preparation of coaxial (core-shell) CdS-ZnS and Cd1-xZnxS-ZnS nanowires has been achieved via a one-step metal-organic chemical vapor deposition (MOCVD) process with co-fed single-source precursors of US and ZnS. Single-source precursors of US and ZnS of sufficient reactivity difference were prepared and paired up to form coaxial nanostructures in a one-step process. The sequential growth of ZnS on US nanowires was also conducted to demonstrate the necessity and advantages of the precursor co-feeding practice for the formation of well-defined coaxial nanostructures. The coaxial nanostructure was characterized and confirmed by high-resolution transmission electron microscopy and corresponding energy dispersive X-ray spectrometry analyses. The photoluminescence efficiencies of the resulting coaxial CdS-ZnS and Cd1-xZnxS-ZnS nanowires were significantly enhanced compared to those of the plain US and plain Cd1-xZnxS nanowires, respectively, owing to the effective passivation of the surface electronic states of the core materials by the ZnS shell.
机构:City Univ Hong Kong, Ctr Super Diamond & Adv Films, Hong Kong, Hong Kong, Peoples R China
Ding, JX
Zapien, JA
论文数: 0引用数: 0
h-index: 0
机构:City Univ Hong Kong, Ctr Super Diamond & Adv Films, Hong Kong, Hong Kong, Peoples R China
Zapien, JA
Chen, WW
论文数: 0引用数: 0
h-index: 0
机构:City Univ Hong Kong, Ctr Super Diamond & Adv Films, Hong Kong, Hong Kong, Peoples R China
Chen, WW
Lifshitz, Y
论文数: 0引用数: 0
h-index: 0
机构:City Univ Hong Kong, Ctr Super Diamond & Adv Films, Hong Kong, Hong Kong, Peoples R China
Lifshitz, Y
Lee, ST
论文数: 0引用数: 0
h-index: 0
机构:
City Univ Hong Kong, Ctr Super Diamond & Adv Films, Hong Kong, Hong Kong, Peoples R ChinaCity Univ Hong Kong, Ctr Super Diamond & Adv Films, Hong Kong, Hong Kong, Peoples R China
Lee, ST
Meng, XM
论文数: 0引用数: 0
h-index: 0
机构:City Univ Hong Kong, Ctr Super Diamond & Adv Films, Hong Kong, Hong Kong, Peoples R China
机构:City Univ Hong Kong, Ctr Super Diamond & Adv Films, Hong Kong, Hong Kong, Peoples R China
Ding, JX
Zapien, JA
论文数: 0引用数: 0
h-index: 0
机构:City Univ Hong Kong, Ctr Super Diamond & Adv Films, Hong Kong, Hong Kong, Peoples R China
Zapien, JA
Chen, WW
论文数: 0引用数: 0
h-index: 0
机构:City Univ Hong Kong, Ctr Super Diamond & Adv Films, Hong Kong, Hong Kong, Peoples R China
Chen, WW
Lifshitz, Y
论文数: 0引用数: 0
h-index: 0
机构:City Univ Hong Kong, Ctr Super Diamond & Adv Films, Hong Kong, Hong Kong, Peoples R China
Lifshitz, Y
Lee, ST
论文数: 0引用数: 0
h-index: 0
机构:
City Univ Hong Kong, Ctr Super Diamond & Adv Films, Hong Kong, Hong Kong, Peoples R ChinaCity Univ Hong Kong, Ctr Super Diamond & Adv Films, Hong Kong, Hong Kong, Peoples R China
Lee, ST
Meng, XM
论文数: 0引用数: 0
h-index: 0
机构:City Univ Hong Kong, Ctr Super Diamond & Adv Films, Hong Kong, Hong Kong, Peoples R China