期刊
APPLIED PHYSICS LETTERS
卷 97, 期 3, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3466664
关键词
cadmium compounds; copper; doping profiles; II-VI semiconductors; nanofabrication; nanoparticles; photoluminescence; pyrolysis; self-assembly; semiconductor doping; semiconductor superlattices
资金
- NSFC [20673128, 60954001, 60825407]
- NCET [08-0717]
- 111 Project [B08002]
High quality Cu(I)-doped CdS [CdS:Cu(I)] nanocrystals were synthesized by thermolysis of metal acetylacetonate complexes in n-dodecanethiol. The optical emission of the doped nanocrystals was observed to change from surface trap-dominant emission to Cu(I)-dominant emission with respect to the reaction time and the doping levels of Cu(I) ions in CdS particles. The maximum photoluminescence quantum yields of the CdS:Cu(I) nanocrystals could reach 15.8%. More interestingly, these doped nanocrystals could self-assemble into highly ordered superlattices depending on the doping levels of the Cu(I) ions. A possible explanation for the formation of the CdS:Cu(I) nanocrystal superlattices is dipole-dipole interactions between the adjacent nanocrystals. (C) 2010 American Institute of Physics. [doi:10.1063/1.3466664]
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据