Zn_2SnO_4立方体的水热合成及其荧光性质  

Hydrothermal Synthesis and PL Properties of Zn_2SnO_4 Nanocubes

作　　者：曾毅[1,2] 邴一飞[1] 刘畅[1] 郑伟涛[1,2] 邹广田[2] 

机构地区：[1]吉林大学材料科学与工程学院,吉林长春130012 [2]吉林大学超硬材料国家重点实验室,吉林长春130012

出　　处：《发光学报》2012年第7期716-719,共4页Chinese Journal of Luminescence

基　　金：中国博士后科学基金(20110491319)资助项目

摘　　要：利用水合肼作缓释型碱源和络合剂,采用水热法合成了Zn2SnO4立方多面体。XRD物相分析表明,产物为结晶良好的立方反尖晶石结构Zn2SnO4。FESEM和TEM形貌分析表明,该Zn2SnO4微晶为边长100～400 nm左右的立方体,其光致发光光谱是蓝-绿光发射带(中心590 nm处),在400℃空气气氛下退火1 h后,蓝-绿光发射带的强度显著降低。这主要是因为退火处理提高了晶体质量,降低了氧空位浓度,从而降低了可见光发射带的强度。Zn2SnO4 nanocubes have been synthesized via a simple and facile one-pot hydrothermal process.The X-ray diffraction（XRD） pattern demonstrates that the products are fine single crystals Zn2SnO4 with the inverse spinel crystal structure.The FESEM and TEM images confirm that Zn2SnO4 microcrystallines are cube-like structure with the side length of 100~400 nm.In addition,the photoluminescence（PL） spectra of Zn2SnO4 nanocubes at room temperature show a broad blue-green emission around the 380~820 nm wavelengths with a maximum center at 590 nm.The PL property of the Zn2SnO4 nanocubes can be obviously reduced by annealing at 400 ℃ for 1 h due to the improvement of the crystal quality and the reduced concentration of oxygen vacancy.

关 键 词：Zn2SnO4 水热合成 多面体 荧光光谱 

分 类 号：O472[理学—半导体物理]