ZHANG Xiao-hui,ZHANG Hai-ming,LI Yu-Jie.Enhancement of the up-conversion luminescence of ZnO:Yb3+/Er3+ by photonic crystals[J].Optoelectronics Letters,2019,15(3):195-199 Enhancement of the up-conversion luminescence of ZnO:Yb3+/Er3+ by photonic crystals Author Name Affiliation ZHANG Xiao-hui  School of Science, Tianjin Polytechnic University, Tianjin 300387, China  ZHANG Hai-ming  School of Science, Tianjin Polytechnic University, Tianjin 300387, China  LI Yu-Jie  Physics Department, Tianjin University Renai College, Tianjin 300072, China  Abstract:       The opal photonic crystals (PCs) were assembled by vertical deposition of polystyrene microspheres (PS), in which Yb3+, Er3+ co-doped ZnO powders were deposited on the surface of PC films. The phase, structure and morphology of the obtained samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscope (TEM). The performance of up-conversion photoluminescence (UCPL) was investigated by fluorescence spectrophotometer. The up-conversion (UC) emission of ZnO:Yb3+/Er3+on the PC surface is notably enhanced when the UC emission wavelength is overlapped with the photonic bandgaps of opals, which is attributed to Bragg reflection of photonic bandgap. The results show that PCs may have potential applications in the enhancement of UCPL and optoelectronic devices. Hits: 715 Download times: 0 View Full Text    Download reader