观测了金纳米球壳微粒(纳米级Au-2S介质外包裹一层纳米级厚的金壳)的荧光光谱,与块状Au2S的荧光峰相比,金纳米球壳的荧光峰蓝移到蓝绿区域。蓝移的主要原因是核壳纳米复合结构中的表面态和量子尺寸效应。

The photoluminescence of Au 2S/Au nanoshell (a nanometer-scale Au 2S core coated by a thin Au shell) is observed. A photoluminescence peak of Au coated Au 2S is observed near the blue-green region. Comparing to the photoluminescence region of bulk Au 2S which is near the orange-red region, the blue-shift photoluminescence of the Au 2S/Au nanoshell mainly attributes to the core/shell nanostructure.