发光
光致发光
纳米线
材料科学
兴奋剂
退火(玻璃)
离子
光电子学
纳米技术
离子注入
激发
持续发光
分析化学(期刊)
化学
热释光
冶金
电气工程
有机化学
工程类
色谱法
作者
Sebastian Geburt,Michael Lorke,A. L. Rosa,Thomas Frauenheim,Robert Röder,T. Voss,U. Kaiser,W. Heimbrodt,Carsten Ronning
出处
期刊:Nano Letters
[American Chemical Society]
日期:2014-07-02
卷期号:14 (8): 4523-4528
被引量:60
摘要
Successful doping and excellent optical activation of Eu3+ ions in ZnO nanowires were achieved by ion implantation. We identified and assigned the origin of the intra-4f luminescence of Eu3+ ions in ZnO by first-principles calculations to Eu–Oi complexes, which are formed during the nonequilibrium ion implantation process and subsequent annealing at 700 °C in air. Our targeted defect engineering resulted in intense intrashell luminescence of single ZnO:Eu nanowires dominating the photoluminescence spectrum even at room temperature. The high intensity enabled us to study the luminescence of single ZnO nanowires in detail, their behavior as a function of excitation power, waveguiding properties, and the decay time of the transition.
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