纳米硫化锌的原位制备及其对多孔硅复合体系发光的调控  

Luminescence Modulation of Porous Silicon-Zinc Sulfide Nanocomposite by in situ Synthesis of Zinc Sulfide

作　　者：邢德松[1] 石建新[1] 龚孟濂[1] 庞起[1] 

机构地区：[1]中山大学光电材料与技术国家重点实验室,化学与化学工程学院广州510275

出　　处：《高等学校化学学报》2004年第1期24-26,共3页Chemical Journal of Chinese Universities

基　　金：广东省自然科学基金 (批准号 :0 3 15 87;0 2 1716和 980 3 42 );广东省科技计划基金 (批准号 :B10 60 2 )资助

摘　　要：Porous silicon-zinc sulfide nanocomposite(PS-ZnS) was prepared by in situ synthesis of ZnS via a simple polyphase reaction on the base of nano-PS. The formation of the composite was confirmed by X-ray diffraction(XRD), field emission scanning electron microscopy(FE-SEM), energy dispersive spectroscopy(EDS) and photoluminescence(PL) measurements. Based on the XRD data and the Debye-Scherrer equation, the size of the formed ZnS particles both on the surface and in the holes of the PS was calculated to be nano-scaled, ca. 5—7 nm. FE-SEM observation showed agglomeration for the ZnS particles with an average crystallite size of 30—40 nm, and the hole diameter of the PS was below 100 nm. PL measurements and CIE diagram analysis for the PS-ZnS composite samples indicated that the emitted light color from the composites could be modulated and controlled by changing the annealing conditions, from orange to violet-blue, and finally, white-light emitter of the composite was obtained.Porous silicon-zinc sulfide nanocomposite(PS-ZnS) was prepared by in situ synthesis of ZnS via a simple polyphase reaction on the base of nano-PS. The formation of the composite was confirmed by X-ray diffraction(XRD), field emission scanning electron microscopy(FE-SEM), energy dispersive spectroscopy(EDS) and photoluminescence(PL) measurements. Based on the XRD data and the Debye-Scherrer equation, the size of the formed ZnS particles both on the surface and in the holes of the PS was calculated to be nano-scaled, ca. 5—7 nm. FE-SEM observation showed agglomeration for the ZnS particles with an average crystallite size of 30—40 nm, and the hole diameter of the PS was below 100 nm. PL measurements and CIE diagram analysis for the PS-ZnS composite samples indicated that the emitted light color from the composites could be modulated and controlled by changing the annealing conditions, from orange to violet-blue, and finally, white-light emitter of the composite was obtained.

关 键 词：纳米硫化锌 原位制备 多孔硅 纳米复合材料 发光 色坐标 

分 类 号：O614.241[理学—无机化学] TB383[理学—化学]