胶体法制备CdSe纳米晶

Synthesis of CdSe Nanocrystals by Using Colloidal Methods

采用胶体软化学方法,用磷酸三丁酯(TBP)溶解硒粉和氯化镉,在辅助溶剂三辛基氧化磷(TOPO)中加热分解前驱物并化学键合,制备出了边长约为60nm三角锥型的CdSe纳米晶.用TEM、AFM和UV-vis吸收光谱对所得纳米晶进行了表征.

CdSe nanocrystals were synthesized in tributylphophine (TBP) and tri-n-octylphosphine (TOPO) solvent by using a soft chemistry method. In contract to other methods, the reagent was injected several times while keeping the temperature over a period of time. TEM, AFM UV-vis were used to show the structure character of the nanocrystals. The formation mechanism of the nanocrystals was also discussed. The as-synthesized nanocrystal is shaped like a triangle cone with nearly equal sides of 60nm.