We report the experimental study of the temperature-dependent photoluminescence from elemental sulfur species on zinc sulfide nanobelts. The green band emission shows an anomalous blueshift-redshift transition and the half-width undergoes a narrowing-broadening transition with decreasing temperature. We observed that the thermal quenching of the integrated intensity of the green band was suppressed. The anomalous behavior can be attributed to strong carrier localization in the unsaturated dangling orbitals of the elemental sulfur. In addition, the blue band in the undoped ZnS nanobelts is also related to the surface sulfur species that is different from the previously reported self-activation mechanism. (c) 2006 American Institute of Physics.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据