Deep Centres in ZnO
Deep Centres in ZnO
复制标题
ZnO 深中心
DOI：
10.1007/978-3-642-10577-7_9
复制
发表时间：
2010
期刊：
影响因子：
--
通讯作者：
B. Meyer
中科院分区：
文献类型：
--
作者：
A. Hoffmann;E. Malguth;B. Meyer
在氧化锌中，过渡金属离子铜、铁、钴等深中心，锂、钠等深受主以及阳离子和阴离子空位等本征缺陷是可见光和红外光谱各个区域发光的根源。图7.1中已经给出了可见光谱范围内的发光的一个例子。在图9.1中给出了与深中心相关的发射的其他例子，通常在块状和外延生长的氧化锌或纳米棒中发现。来自电子顺磁共振(EPR)的数据补充了各种深中心的光学性质的呈现。它来源于绿色和黄色发射带及其对过渡金属的解释。从本征缺陷出发，多年来人们一直认为氧空位是绿光波段宽发射带的来源之一。其他本征缺陷在最近的文献中经常被讨论，但讨论仍然相当有争议，而且与过渡金属相比，各种指定所基于的实验结果往往不那么详细。因此，没有单独一节专门论述这些综合体，但提供了一些信息，例如，在5.1节的末尾。
In ZnO, deep centres such as the transition metal ions Cu, Fe, Co, etc., deep acceptors such as Li and Na as well as intrinsic defects such as the cation and anion vacancies are the origin of light emissions in various regions of the visible and infrared spectral range. One example of luminescence in the visible spectral range was already presented in Fig. 7.1. In Fig. 9.1 other examples of deep centre related emissions are given, which are often found in bulk and epitaxially grown ZnO or in nano rods. The presentation of optical properties of various deep centres is complemented by data from electron paramagnetic resonance (EPR). It proceeds from the green and yellow emission bands and their interpretation to transition metals. From the intrinsic defects, the oxygen vacancy is discussed since many years as one of the origins of a broad emission band in the green spectral range. Other intrinsic defects are frequently discussed in recent literature, but the discussion is still rather controversial and the experimental findings on which the various assignments are based are frequently much less elaborate compared, for example, to transition metals. Therefore, no individual section is devoted to these complexes but some information is given, for example, at the end of Sect 5.1.