Preparation of polymorphic ZnO with strong orange luminescence
Preparation of polymorphic ZnO with strong orange luminescence
复制标题
DOI：
10.1007/s10853-009-4102-7
复制
发表时间：
2010-03
影响因子：
4.5
通讯作者：
G. Du;Yongqiang Yang;Tianbao Li;Bingshe Xu
中科院分区：
文献类型：
--
作者：
G. Du;Yongqiang Yang;Tianbao Li;Bingshe Xu
采用低温（40 ~ 90℃）溶液法制备了多晶氧化锌，并用透射电镜、紫外-可见吸收光谱和光致发光光谱对产物进行了表征。发现ZnO的形貌和微观结构可以通过改变生长温度和结晶条件来调节。合成产物在620nm处表现出窄带隙和强橙色发光，这可能是由于ZnO在溶液生长过程中引入了间隙氧离子缺陷所致。
Polymorphic ZnO has been prepared by a solution method at low temperature (40–90 °C) and the product has been characterized by transmission electron microscopy, UV–vis absorption, and photoluminescence spectroscopy. It is found that the morphology and microstructure of ZnO can be tuned by varying the growth temperature and crystallization condition. The as-synthesized product exhibits narrowed band gap and strong orange luminescence at 620 nm, which may arise from the interstitial oxygen ion defect introduced into ZnO in the solution growth process.