Influence of Doping Effect on Zinc Oxide by First-Principles Studies
Zinc oxide,ZnO,can be synthesized into a variety of morphologies including nanowires,nanorods,tetrapods,nanobdts,nano-flowers,nanopartides,etc.,and zinc oxide nanomaterials are promising candidates for nanoelectronics and photonics.Doping in ZnO is one of the most efficient approaches to improve its structure and properties.Here we use the density-functional theory (DFT) to investigate the doping effect of Mn or Co on ZnO.Our calculation results reveal that the transition pressure from the wurtzite (B4) phase to the rocksalt (B1) phase of ZnO decreases with Mn or Co doping,which is consistent with the in situ high-pressure X-ray powder diffraction results from synchrotron radiation.For both Mn and Co doping,the doping effect on different structures of ZnO increases in the order:BI < intermediate tetragonal structure < intermediate hexagonal structure < B4.This causes the decrease of the transition barrier between B4 and BI,which accounts for the decreased transition pressure of Mn-or Co-doped ZnO.Our results provide a theoretical basis for the doping approach to control the structures and properties of ZnO and other similar materials.
Yi Wang Tingjun Hou Sheng Tian Shuit-Tong Lee Youyong Li
Institute of Functional Nano & Soft Materials(FUNSOM)and Jiangsu Key Laboratory for Carbon-Based Fun Center of Super-Diamond and Advanced Film(COSDAF)and Department of Physics and Materials Science, Ci
国际会议
南京
英文
299-309
2012-05-13（万方平台首次上网日期，不代表论文的发表时间）