(Mn, Zn) co-doped CdS nanowires
(Mn, Zn) co-doped CdS nanowires
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DOI：
10.1021/jp072364k
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发表时间：
2007-07
影响因子：
3.7
通讯作者：
D. Kim;A. Cho;Jeunghee Park;Jungbum Yoon;A. Jó;M. Jung
中科院分区：
文献类型：
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作者：
D. Kim;A. Cho;Jeunghee Park;Jungbum Yoon;A. Jó;M. Jung
(Mn采用气相传输法合成了CdS（Cd 0. 8 Mn 0. 01 Zn 0. 17 S，Cd 0. 78 Mn 0. 15 Zn 0. 07 S，Cd 0. 67 Mn 0. 3 Zn 0. 07 S）共掺杂纳米线（或纳米带）。它们的X射线衍射图显示了高达1.5%的晶格常数的显着收缩，由于掺入Mn和Zn。的Cd，Mn和Zn原子的电子结构进行了探测的X射线光电子能谱和比较与Mn掺杂的CdS（Cd 1-xMnxS，其中x = 0.1，0.2和0.3）纳米线。随着Mn浓度的增加，Cd 3d，Mn 2 p和Zn 2 p峰的结合能向较低的能量移动，并且峰宽变得更宽，这表明Mn和Zn有效地掺入到CdS晶格中。光致发光谱表明，Mn掺杂使带边发射峰向高能量方向移动，Zn掺杂使带边发射峰向低能量方向移动。磁化曲线表明存在室温铁磁行为。
(Mn, Zn) co-doped CdS (Cd0.8Mn0.01Zn0.17S, Cd0.78Mn0.15Zn0.07S, and Cd0.67Mn0.3Zn0.07S) nanowires (or nanobelts) were synthesized using the vapor transport method. Their X-ray diffraction patterns reveal a significant contraction of the lattice constants of up to 1.5%, due to the incorporation of Mn and Zn. The electronic structures of the Cd, Mn, and Zn atoms were probed by X-ray photoelectron spectroscopy and compared with those of the Mn-doped CdS (Cd1-xMnxS, where x = 0.1, 0.2, and 0.3) nanowires. As the concentration of Mn increases, the binding energy of the Cd 3d, Mn 2p, and Zn 2p peaks shifts to a lower energy, and the peak width becomes broader, indicating the effective incorporation of Mn and Zn into the CdS lattices. The photoluminescence spectrum reveals that the band-edge emission peak shifts to a higher energy with the Mn doping but to a lower energy with the Zn doping. The magnetization curves suggest the existence of room-temperature ferromagnetic behavior.