Eu3+,Li+共掺杂ZnO薄膜结构与发光性质的研究

解晓君; 李清山; 董艳锋; 赵涛

doi:10.3969/j.issn.1001-3806.2011.01.005

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Eu3+,Li+共掺杂ZnO薄膜结构与发光性质的研究

解晓君 , 李清山 , 董艳锋 , 赵涛

文章导航 > 激光技术 > 2011 > 35(1): 15-18

引用本文:

Citation:

Eu3+,Li+共掺杂ZnO薄膜结构与发光性质的研究

1.
曲阜师范大学物理工程学院, 曲阜 273165;
2.
鲁东大学物理学院, 烟台 264025

作者简介: 解晓君(1986-)，女，硕士研究生，主要从事纳米薄膜材料与功能器件方面的研究.

通讯作者: 李清山, qslildu@126.com ;

基金项目:
null
中图分类号: O484.4

null

1.
Department of Physics, Qufu Normal University, Qufu 273165, China;
2.
College of Physics, Ludong University, Yantai 264025, China

Corresponding author: LI Qing-shan, qslildu@126.com ;

CLC number: O484.4

摘要: 为了研究Eu3+,Li+共掺杂的ZnO薄膜结构与发光性质,采用脉冲激光沉积方法在P型单晶Si（111）衬底上制备了Eu3+,Li+共掺杂的ZnO薄膜,其中,Eu3+作为发光中心,而Li+作为低价电荷的补偿离子和发光敏化剂。分别对样品进行了X射线衍射谱测试和光致发光谱分析。得出的数据中X射线衍射谱显示,Eu3+,Li+共掺杂的ZnO薄膜具有c轴择优取向,X射线衍射谱中除ZnO晶向以外没有出现其它结晶峰;Eu3+,Li+共掺杂的ZnO薄膜的光致发光谱与ZnO纯晶体薄膜的发射光谱基本相似,但是掺杂ZnO薄膜的紫外发光峰却出现红移现象,峰值位于382nm处,且发光峰也不尖锐。当以395nm的激发光照射样品时,在光致发光光谱中观察到了稀土Eu3+在594nm,613nm附近的特征发光峰。结果表明,掺杂元素Eu3+,Li+均已进入到ZnO晶格中,形成了以Eu3+为发光中心的ZnO纤锌矿结构。
- null
Abstract: In order to study the property of Eu3+ and Li+ co-doped ZnO thin film, it was deposited on the P-type Si (111) substrate by means of pulsed laser deposition(PLD)method with Eu3+ as luminous center and Li+ as the low charged compensated ions and the sensitizer. The photoluminescent(PL) spectra and the X-ray diffraction(XRD) spectra of the film were measured to analyze the crystal structure and photoluminescent property. Through XRD, it can be seen that the ZnO:Eu3+，Li+ film was highly c-axis oriented. In the XRD spectrum, no other crystal orientations were observed except the ZnO crystal orientation. The doping of Eu3+ into ZnO lattice introduced tensile stress, making ZnO crystal lattice spacing larger; but as the oxygen pressure increased, the crystal lattice spacing and lattice constant both had a smaller trend. The PL spectra of the Eu3+, Li+ co-doped ZnO thin film was similar with that of pure ZnO films, but the UV emission peak showed a red-shift phenomenon at about 382nm, and the emission peak was not sharp. When irradiated under the wavelength of 395nm, obvious emission at the wavelength of about 594nm，613nm from the rare-earth element of Eu3+ was observed in the photoluminescence spectra. All the results indicate that the doping elements of Eu3+ and Li+ have incorporated into the crystal lattice of ZnO, and conform the wurtzite structure with Eu3+ as its luminescent centre.

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Eu3+,Li+共掺杂ZnO薄膜结构与发光性质的研究

通讯作者: 李清山, qslildu@126.com;

作者简介: 解晓君(1986-)，女，硕士研究生，主要从事纳米薄膜材料与功能器件方面的研究

1. 曲阜师范大学物理工程学院, 曲阜 273165;
2. 鲁东大学物理学院, 烟台 264025

收稿日期: 2010-04-23
录用日期: 2010-06-01
网络出版日期: 2011-01-25

基金项目: null

关键词:

null

摘要: 为了研究Eu3+,Li+共掺杂的ZnO薄膜结构与发光性质,采用脉冲激光沉积方法在P型单晶Si（111）衬底上制备了Eu3+,Li+共掺杂的ZnO薄膜,其中,Eu3+作为发光中心,而Li+作为低价电荷的补偿离子和发光敏化剂。分别对样品进行了X射线衍射谱测试和光致发光谱分析。得出的数据中X射线衍射谱显示,Eu3+,Li+共掺杂的ZnO薄膜具有c轴择优取向,X射线衍射谱中除ZnO晶向以外没有出现其它结晶峰;Eu3+,Li+共掺杂的ZnO薄膜的光致发光谱与ZnO纯晶体薄膜的发射光谱基本相似,但是掺杂ZnO薄膜的紫外发光峰却出现红移现象,峰值位于382nm处,且发光峰也不尖锐。当以395nm的激发光照射样品时,在光致发光光谱中观察到了稀土Eu3+在594nm,613nm附近的特征发光峰。结果表明,掺杂元素Eu3+,Li+均已进入到ZnO晶格中,形成了以Eu3+为发光中心的ZnO纤锌矿结构。