Synthesis and properties study of Q1D semiconductor nanostructures

2015-07-31Nanoscience and nanotechnology studies materials at the nanoscale, on the order of 10⁻⁹ meter. There are many new physical phenomena and material properties when the dimension of materials reduces to nanoscale. Therefore, it is of great importance for both physical exploration and industrial application. Quasi-one-dimensional (Q1D) semiconductor nanostructures is specifically interesting because they have great potential for electronic and optoelectronic devices. However, to fabricate high quality Q1D materials and demonstrate precise control over materials properties has not yet been mature for many important material systems. Also, lack of in-depth physical understanding on these nanostructures also holds back the development of nanodevices. In this thesis, fabrication of different Q1D nanostructures (InN nanowires, CdTe nanowires, CdTe:Sb nanobelts and Sb₂Te₃ nanowires) are demonstrated, and their structural, optical and electrical properties are investigated systematically, which is important for future devices applications