Facile synthesis, optical properties and growth mechanism of elongated Mn-doped ZnSe1-xSx nanocrystals

被引：9
作者：
Yao, Tingting [1 ]
Kou, Shufang [2 ]
Sun, Yanghui [3 ,4 ]
Zhao, Qing [3 ,4 ]
Yang, Jian [1 ,2 ]
机构：
[1] S China Univ Technol, Dept Chem Engn, Guangzhou, Guangdong, Peoples R China
[2] Shandong Univ, Dept Chem, Jinan 250100, Peoples R China
[3] Peking Univ, State Key Lab Mesoscop Phys, Beijing 100871, Peoples R China
[4] Peking Univ, Dept Phys, Electron Microscopy Lab, Beijing 100871, Peoples R China
来源：
CRYSTENGCOMM | 2012年 / 14卷 / 24期
关键词：
SHAPE-CONTROLLED SYNTHESIS; ZNSE NANOCRYSTALS; SEMICONDUCTOR NANOCRYSTALS; ORIENTED ATTACHMENT; NANOWIRES; NANORODS; EMITTERS; NANOSTRUCTURES; EFFICIENCY; NANOBELTS;
D O I：
10.1039/c2ce26322j
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Transition-metal doping in semiconductors is an important way to modulate their intrinsic properties or bring out new functionalities for applications. Here, elongated Mn-doped ZnSe1-xSx nanocrystals are synthesized through a facile one-pot reaction under mild conditions. These ZnSe1-xSx nanocrystals with a diameter of 2-4 nm have a cubic phase structure. EPR and PL spectra confirm the successful doping of Mn2+ into the ZnSe1-xSx nanocrystals, based on the corresponding hyperfine splitting constants and emission bands. The temporal evolution of UV-vis absorption and PL spectra indicates the growth-doping mechanism for the formation of the doped nanocrystals. Surface coating of these nanocrystals with a shell increases the quantum yield up to 35%. And the dual-function role of 1-dodecanethiol is confirmed in the formation of the elongated Mn-doped ZnSe1-xSx nanocrystals.
引用
收藏
页码：8440 / 8445
页数：6
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