物理学报2013，Vol.62Issue(2)：513-520,8.DOI:10.7498/aps.62.027501
Fe,Co共掺杂ZnO薄膜结构及发光特性研究
Crystal structures and optical properties of(Fe,Co)-codoped ZnO thin films
摘要
Abstract
The Fe, Co-codoped Zn0.9FexCo0.1-xO (x = 0,0.03,0.05,0.07) thin films are fabricated on the glass substrates by sol-gel method. The surface morphologies, crystal structures, elements and optical properties of the films are investigated using scanning electron microscopy (SEM), X-ray diffraction (XRD), X ray photoelectron spectroscopy (XPS) and photoluminescence (PL) spectrum. The XRD results reveal that all the ZnO films are of wurtzite structure. The diffraction peaks of the clusters, oxide or other impurity phase related to Fe and Co are not observed in the samples. This indicates that codoped is beneficial to the improvement on the dispersion of Fe or Co in ZnO. XPS results reveal that Co elements exist as Co2+, Fe elements exist as Fe2+ and Fe3+, but the increase of relative concentration of Fe leads to the increase of Fe3+ content. The ultraviolet emission peak and blue double emission are observed in the PL spectra of all the samples. Compared with the undoped ZnO film, the Co-codoped ZnO film has a blue shift of ultraviolet emission peak of Fe, the unchanged position of the blue double emission peak, and the weakened luminous intensity. Moreover, the green luminescence peak of the doped ZnO film almost disappears. Finally, the luminescence mechanisms of Fe, Co-codoped ZnO films are discussed by combining the microstructures and compositions of the samples.关键词
ZnO薄膜/溶胶-凝胶法/掺杂/光致发光Key words
ZnO thin films/ sol-gel method/ doping/ photoluminescence引用本文复制引用
张丽,徐明,余飞,袁欢,马涛..Fe,Co共掺杂ZnO薄膜结构及发光特性研究[J].物理学报,2013,62(2):513-520,8.基金项目
四川省学术和技术带头人培养基金(批准号:25727501)、西南民族大学研究生学位点建设项目(批准号:2012XWD-S0805)和西南民族大学研究生创新型科研项目(批准号:CX2013SZ03)资助的课题. （批准号:25727501）
