纳米ZnO和ZnO∶Eu^(3+)的表面效应及发光特性

The surface effect and luminescence properties of nanostructure ZnO and ZnO∶Eu^(3+)

纳米ZnO ,ZnO :Eu3+ 及其添加覆盖层样品的光谱性质表明 ,表面有机物覆盖层具有改善发射光谱 ,增强基质与Eu3+ 间能量传递的良好效果 .通过比较不同温度 (6 0 ,80 0℃ )处理的ZnO :Eu3+ 发光强度 ,发现了小尺度 (纳米 )

The luminescence properties of zinc oxide (ZnO), doped with rare earth ions (Eu 3+ ) and capped by an organic material (PVP) were studied. With the comparison between pure and capped samples of ZnO and ZnO:Eu 3+ , one can find that the PVP on the surface of zinc oxide plays an important role in increasing the Eu 3+ luminescence intensity and providing a wonderful route for energy transfer from ZnO(PVP) to Eu 3+ . Meanwhile, the special enhancing effect of luminescence from nanostructure ZnO:Eu 3+ , processed at different temperatures, was discussed.