磷化铟量子点的掺杂和光学性质
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- 英文论文题名：Doping of InP quantum dots and its optical properties
- 论文作者：杨锁龙 ; 王晓方 ; 蒋春丽 ; 王怀胜 ; 赖新春
- 英文论文作者：Suolong Yang ; Xiaofang Wang ; Chunli Jiang ; Huaisheng Wang ; Xinchun Lai ; Science and Technology on Surface Physics and Chemistry Laboratory
- 年：2016
- 作者机构：表面物理与化学重点实验室;
- 论文关键词：磷化铟 ; 量子点 ; 掺杂
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第三十六分会：纳米材料合成与组装
- 语种：中文
- 分类号：O614.372;TB383.1
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第三十六分会 ; 纳米材料合成与组装
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：192k
- 原文格式：D
- 会议级别：全国
摘要
金属离子掺杂由于可对量子点的结构、形貌尺寸和荧光性能产生明显的影响而广受关注~[1-4],但是关于III-V族量子点中最有代表性的In P量子点的掺杂合成以及荧光性能的文献报道还较少。本文采用文献~[4]的热注入法,选择离子半径与宿主阳离子(In~(3+))离子半径相近的金属离子(Li、Zn)进行掺杂,通过在醋酸铟中掺入不同摩尔比的醋酸锂、醋酸锌制成阳离子前驱体,在一定温度下与注入的有机磷源原位成核反应形成掺杂InP量子点。然后对合成的掺杂InP量子点进行结构、形貌尺寸、吸光谱和荧光谱的表征。研究结果表明,所合成的Li、Zn掺杂的In P量子点为球形、尺寸均匀,具有ZnS闪锌矿结构,采用TEM观察发现Li、Zn掺杂导致In P量子点的尺寸明显减小,但是对InP量子点具有明显的荧光增强效果。ICP成分测量发现掺杂InP量子点中Zn含量与前驱体配比接近,而Li的含量则很少。造成这种现象的原因可能与Zn、Li离子在In P量子点表面的结合力强弱程度有关。
The doping of quantum dots(QDs) with metal ions, which has been a topic of intensive research interest recently, can obviously tune the optical properties of QDs. However, literatures on the doping of In P QDs are relatively scarce. In this paper, Li and Zn doped InP quantum dots are successfully synthesized via an in-situ nucleation doping approach, and then the effect from dopant and dopant concentration are investigated. As a result, as-synthesized Li and Zn doped In P QDs have narrow size distribution and good crystalline. The size decreased with the dopant concentration increase and resulted in a blue-shift on UV-vis absorption. The photoluminescence intensity of In P QDs is obviously enhanced by Li and Zn dopant because of the surface passivation of Li and Zn ions.
The doping of quantum dots(QDs) with metal ions, which has been a topic of intensive research interest recently, can obviously tune the optical properties of QDs. However, literatures on the doping of In P QDs are relatively scarce. In this paper, Li and Zn doped InP quantum dots are successfully synthesized via an in-situ nucleation doping approach, and then the effect from dopant and dopant concentration are investigated. As a result, as-synthesized Li and Zn doped In P QDs have narrow size distribution and good crystalline. The size decreased with the dopant concentration increase and resulted in a blue-shift on UV-vis absorption. The photoluminescence intensity of In P QDs is obviously enhanced by Li and Zn dopant because of the surface passivation of Li and Zn ions.
引文
[1]Wu,P.;Yan,X.P.Chem.Soc.Rev.,2013,42:5489-5521.
[2]Zhang,W.;Lou,Q.;Ji,W.;et al.Chem.Mater.,2014,26:1204-1212.
[3]Xie,R.G.;Peng,X.G.J.Am.Chem.Soc.,2009,131:10645-10651.
[4]Battaglia,D.;Peng,X.G.Nano Lett.,2002,2:1027-1030.
[2]Zhang,W.;Lou,Q.;Ji,W.;et al.Chem.Mater.,2014,26:1204-1212.
[3]Xie,R.G.;Peng,X.G.J.Am.Chem.Soc.,2009,131:10645-10651.
[4]Battaglia,D.;Peng,X.G.Nano Lett.,2002,2:1027-1030.