Probing intermediates of the induction period prior to nucleation and growth of semiconductor quantum dots
文献类型：期刊论文
| 作者 | Liu, MY; Wang, K; Wang, LX; Han, S; Fan, HS; Rowell, N; Ripmeester, JA; Renoud, R; Bian, FG; Zeng, JR |
| 刊名 | NATURE COMMUNICATIONS
 |
| 出版日期 | 2017 |
| 卷号 | 8期号:-页码:- |
| 关键词 | Magic-sized Cdse Strong Bandgap Photoluminescence Small-angle Scattering Low-temperature Cdte Nanocrystals Mass-spectrometry Calcium-phosphate Clusters Nanoparticles Nanoclusters |
| ISSN号 | 2041-1723 |
| DOI | 10.1038/ncomms15467 |
| 文献子类 | 期刊论文 |
| 英文摘要 | Little is known about the induction period before the nucleation and growth of colloidal semiconductor quantum dots. Here, we introduce an approach that allows us to probe intermediates present in the induction period. We show that this induction period itself exhibits distinct stages with the evolution of the intermediates, first without and then with the formation of covalent bonds between metal cations and chalcogenide anions. The intermediates are optically invisible in toluene, while the covalent-bonded intermediates become visible as magic-size clusters when a primary amine is added. Such evolution of magic-size clusters provides indirect but compelling evidence for the presence of the intermediates in the induction period and supports the multi-step nucleation model. Our study reveals that magic-size clusters could be readily engineered in a single-size form, and suggests that the existence of the intermediates during the growth of conventional quantum dots results in low product yield. |
| WOS关键词 | MAGIC-SIZED CDSE ; STRONG BANDGAP PHOTOLUMINESCENCE ; SMALL-ANGLE SCATTERING ; LOW-TEMPERATURE ; CDTE NANOCRYSTALS ; MASS-SPECTROMETRY ; CALCIUM-PHOSPHATE ; CLUSTERS ; NANOPARTICLES ; NANOCLUSTERS |
| 语种 | 英语 |
| WOS记录号 | WOS:000402745200001 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/28782]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 推荐引用方式 GB/T 7714 | Liu, MY,Wang, K,Wang, LX,et al. Probing intermediates of the induction period prior to nucleation and growth of semiconductor quantum dots[J]. NATURE COMMUNICATIONS,2017,8(-):-. |
| APA | Liu, MY.,Wang, K.,Wang, LX.,Han, S.,Fan, HS.,...&Yu, K.(2017).Probing intermediates of the induction period prior to nucleation and growth of semiconductor quantum dots.NATURE COMMUNICATIONS,8(-),-. |
| MLA | Liu, MY,et al."Probing intermediates of the induction period prior to nucleation and growth of semiconductor quantum dots".NATURE COMMUNICATIONS 8.-(2017):-. |
入库方式： OAI收割
来源：上海应用物理研究所
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