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| Blue-Light Emission from Undoped and Rare Earth-Doped Wide Bandgap Oxides | |
| 作者姓名： | 郝建华 何国庚 黄雄武 吴锐 |
| 作者单位： | [1]Department of Optoelectronic Engineering, Huazhong University of Science and Technology, Wuhan 430074,China [2]School of Energy and Power Engineering,Huazhong University of Science and Technology, Wuhan430074, China |
| 摘 要： | Blue-light emitting materials have been receivingconsiderable attention due to their applications for avariety of optoelectronic devices and display technolo-gies . Rare earth-doped compounds have long founduses as blue phosphors in a variety of devices due totheir intensely luminescent f-d and f-f electronictransitions1]. Metal sulfides ,such as ZnS have beenutilized as conventional phosphors due to their excel-lent brightness . However ,the life span of the displaydevices is li mited due t… |
| 关 键 词： | 宽带隙 氧化物 稀土掺杂 未掺杂 蓝光发光 |
| 文章编号： | 1002-0721（2006）06-0728-04 |
| 收稿时间： | 2006-06-10 |
| 修稿时间： | 2006-09-10 |
Blue-Light Emission from Undoped and Rare Earth-Doped Wide Bandgap Oxides |
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| Hao , He Guogen, Huang Xiongwu,Wu Rui.Blue-Light Emission from Undoped and Rare Earth-Doped Wide Bandgap Oxides[J].Journal of Rare Earths,2006,24(6):728-731. | |
| Authors: | Hao He Guogen Huang Xiongwu Wu Rui |
| Affiliation: | aDepartment of Optoelectronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China bSchool of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China |
| Abstract: | Rare earth-doped oxide thin-film phosphors may emerge as an alternate choice for the blue phosphor, due to their chemical and thermal stability in high vacuum and absence of corrosive gas emission under electron bombardment. The blue phosphors in this study were activated in air at temperatures suitable for glass substrates, which have been used in a number of applications. The effects of rare earth ions and oxide hosts on the blue-light-emitting properties of phosphors are discussed. In addition, novel blue-light emission was observed in certain typical undoped wide bandgap oxides. The luminescence of the oxides depends on the growth and annealing conditions under different atmospheres, suggesting that it is associated with the presence of oxygen vacancies. Radiative processes related to oxygen vacancies were also presented. |
| Keywords: | wide bandgap luminescence rare earths oxide blue light rare earths |
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