Citation: WANG Quan, ZHANG Qi-Feng, SUN Hui, ZHANG Jun-Yan, DENG Tian-Song, WU Jin-Lei. Growth and Optical Characteristics of ZnO Photonic Crystals[J]. Acta Physico-Chimica Sinica, ;2007, 23(11): 1667-1670. doi: 10.3866/PKU.WHXB20071103
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Monodispersed ZnO spheres were produced by strictly isolating the formation and growth of crystal nuclear, and the sphere diameters were controlled by varying the amount of the crystal nuclear. Photonic crystals (PCs) were produced from ZnO spheres by using a kind of sedimentation self-assembly process. The concentrated reaction solution was dropped onto a substrate typically at 140 ℃, and as the solvent evaporated, the particles spontaneously assembled into periodic structures. By measuring the normal-incidence transmission spectra, the photonic band gap (PBG) of our periodic structures was observed, the PCs assembled by monodisperse ZnO spheres with diameters of 220 and 250 nmcorresponded to the PBG with the center wavelengths of 460 and 540 nm, respectively.
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Keywords:
- ZnO; Photonic crystal; Photonic band gap
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