【摘要】 针对CdTe量子点嵌入PVP薄膜且旋涂于金膜的体系,设计了一系列光学实验,通过测量散射光环角度与激发光波长和偏振的依赖关系,证明了该效应源于表面等离激元协助的方向性发光,并发现了一种有趣的“相移”现象.更多还原

【Abstract】 The origin of the Rayleigh scattering ring effect has been experimentally examined on a quantum dot/metal film system, in which CdTe quantum dots embedded in PVP are spincoated on a thin Au film. On the basis of the angle-dependent, optical measurements under different excitation schemes(i.e., wavelength and polarization), we demonstrate that surface plasmon assisted directional radiation is responsible for such an effect. Moreover, an interesting phase-shift behavior is addressed.更多还原