Novel CdS Nanostructures: Synthesis and Field Emission

Here, we reported the success in the synthesis of novel CdS nanostructures, nanotubes, core-sheath nanowires, and tube−wire nanojunctions, by thermal evaporation of CdS powder and purposed a model for the growth mechanism. The core−sheath nanowires consist of a crystalline core and amorphous sheath. The photoluminescence characterization indicated that the CdS nanostructures were crystalline and showed a narrow peak at 516.5 nm. In addition, the CdS nanostructures exhibited better field emission properties with a field enhancement factor of 1.5 × 10 4 and turn-on field of 1.4 V/μm.

[1]  Yang Jiang,et al.  Synthesis and Lasing Properties of Highly Ordered CdS Nanowire Arrays , 2007 .

[2]  Zhong Lin Wang,et al.  Direct-Current Nanogenerator Driven by Ultrasonic Waves , 2007, Science.

[3]  Shui-Tong Lee,et al.  Transport properties of single-crystal CdS nanoribbons , 2006 .

[4]  Y. Feng,et al.  Electroluminescence and field emission of Mg-doped ZnO tetrapods , 2006 .

[5]  Yi-Feng Lin,et al.  Non-catalytic and template-free growth of aligned CdS nanowires exhibiting high field emission current densities. , 2006, Chemical communications.

[6]  Shui-Tong Lee,et al.  High-quality CdS nanoribbons with lasing cavity , 2004 .

[7]  Charles M. Lieber,et al.  Nanowire Photonic Circuit Elements , 2004 .

[8]  W. Jaegermann,et al.  Interface properties and band alignment of Cu2S/CdS thin film solar cells , 2003 .

[9]  Charles M. Lieber,et al.  Single-nanowire electrically driven lasers , 2003, Nature.

[10]  Tae Jae Lee,et al.  Field emission from well-aligned zinc oxide nanowires grown at low temperature , 2002 .

[11]  Tseng Gy,et al.  Nanotechnology. Toward nanocomputers. , 2001 .

[12]  Yiying Wu,et al.  Room-Temperature Ultraviolet Nanowire Nanolasers , 2001, Science.

[13]  Yu Huang,et al.  Indium phosphide nanowires as building blocks for nanoscale electronic and optoelectronic devices , 2001, Nature.

[14]  Xiangfeng Duan,et al.  General Synthesis of Compound Semiconductor Nanowires , 2000 .

[15]  M. Artemyev,et al.  Electroluminescence in thin solid films of closely packed CdS nanocrystals , 1997 .

[16]  Xiaoping Shen,et al.  Fabrication of well-aligned CdS nanotubes by CVD-template method , 2005 .