ZnS微米球的制备和光学性质的研究

Synthesis and Photoluminescence of ZnS Microsphere Particles

用超声的方法在水和正庚烷的微乳液中成功地合成了ZnS的微米球,并用XRD,TEM对微米球进行了表征.合成的产物为纯的多晶ZnS,微米球的直径约为2μm,为规则的球形,粒径分布窄,分散均匀,表面光滑.荧光光谱上ZnS微米球在456 nm处有一个发射主峰,在492 nm处有一个小峰.这两个发光峰报道不多.它对应于ZnS的缺陷发光.

Microsphere particles of ZnS were synthesized in an ultrasonic method in solutions of water and heptane. XRD and TEM were used to characterize the structure and the size of ZnS. It was pure polycrystal structure and the diameter of the sphere was about 2μm. It was inerratic sphere with a smooth surface and good dispersion. There was a main peak at 456 nm and a minor peak at 492 nm from the phosphorescence curve. There have been few reports about this,which is caused by the defects of the ZnS.