硅银衬底上氧化锌半导体微腔的光致发光本征模式研究

We report the photoluminescence eigen modes of ZnO semiconductor microcavity lied on the Ag/Si substrate at room temperature. The experiment results show that the photoluminescence modes depend on the geometric structure of the microcavity, instead of the excitation intensity. The eigenmode in the microcavity is considered to be the transverse Fabry-Perot modes, where the effect of the strong coupling between plasmon and exciton is observed with the reducing of the refractive index from original 2.0 to 1.67 in visible region. Meanwhile the coupling between plasmon and exciton-polaritons in band-edge region are also demonstrated by assumed effective refractive index 1.92 through simulation with excellent agreement between experimental and theoretical results.