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介绍了纳米ZnO常见发光谱的发光机制。在室温光致发光谱(PL)中,一般在380 nm处出现紫外发光,也有报道在357和377 nm处的紫外发光,列举了几种不同的发光解释。对于深能级发光,一般在400～550 nm出现连续的发光带,也有观察到深能级的声子伴线和声子复制现象。在低温光致发光谱的紫外发射中,一般观察到由自由激子发射(FX)、中性施主束缚激子发射(D0X)、施主-受主对跃迁峰(DAP)、中性施主束缚激子对应的双电子卫星峰(TES)以及声子伴线。综述了纳米ZnO的喇曼光谱、透射光谱、电致发光谱(EL)的特征,最后展望了纳米ZnO的光学性能研究前景。
The luminescent mechanism of the common luminescence spectrum of nano-ZnO is introduced. In room temperature photoluminescence (PL), UV luminescence typically occurs at 380 nm, and UV luminescence at 357 and 377 nm has also been reported, listing several different luminescence interpretations. For deep level luminescence, continuous luminescent bands are generally present at 400-550 nm, and deep phonon-associated lines and phonon replication phenomena are also observed. In the UV emission of low-temperature photoluminescence spectra, there is generally observed a series of interactions consisting of free exciton emission (FX), neutral donor bound exciton emission (D0X), donor-acceptor pair transition peak (DAP) Son corresponding double electron satellite peak (TES) and phonon with the line. The characteristics of Raman spectra, transmission spectra and electroluminescence spectra (EL) of ZnO nanowires are summarized. Finally, the research prospects of optical properties of ZnO nanowires are prospected.