INSTITUTO DE QUIMICA, FISICA DE LOS MATERIALES, MEDIOAMBIENTE Y ENERGIA
Unidad Ejecutora - UE
Low temperature solution-phase growth of ZnSe and ZnSe/CdSe core/shell nanowires
NATTASAMON PETCHSANG; LIUBOV SHAPOVAL; FELIX VIETMEYER; YANGHAI YU; JOSE H. HODAK; I-MING TANG; THOMAS H. KOSEL; MASARU KUNO
Royal Society of Chemistry
Lugar: Cambridge; Año: 2011 vol. 3 p. 3145 - 3145
High quality ZnSe nanowires (NWs) and complementary ZnSe/CdSe core/shell species have been synthesized using a recently developed solutionliquidsolid (SLS) growth technique. In particular, bismuth salts as opposed to pre-synthesized Bi or Au/Bi nanoparticles have been used to grow NWs at low temperatures in solution. Resulting wires are characterized using transmission electron microscopy and possess mean ensemble diameters between 15 and 28 nm with accompanying lengths ranging from 410 μm. Subsequent solution-based overcoating chemistry results in ZnSe wires covered with CdSe nanocrystals. By varying the shell´s growth time, different thicknesses can be obtained and range from 8 to 21 nm. More interestingly, the mean constituent CdSe nanocrystal diameter can be varied and results in size-dependent shell emission spectra.