Diluted Magnetic Semiconductor Nanowires Prepared by the Solution Liquid-Solid Method

摘要

In recent years, paramagnetic-ion-doped semiconductor nanostructures (diluted magnetic semiconductors, DMSs) such as dots, rods, wires, and films have been the subject of intense research because of their fascinating properties (for example, the magnetism of doped nanocrystals can be either induced by charge or light) and potential applications in bioimaging, solar cells, spintronics, and quantum interference information processing. Traditionally, these DMS nanostructures were generated by expensive non-wet chemical methods such as molecular-beam epitaxy (MBE), vapor-liquid-solid (VLS) and chemical vapor deposition (CVD) techniques. The nanostructures thus obtained do not always fall within the quantization regime and exhibit weakly enhanced carrier/paramagnetic ion spin interactions. Addi- tionally, the lack of surface ligands on the nanostructures limits their solubility, surface functionalization, processability, and applications. Thus the preparation of colloidal DMS nanostructures within the quantization regime through a simple wet-chemical approach remains a great challenge.