期刊
NANO LETTERS
卷 14, 期 6, 页码 3661-3667出版社
AMER CHEMICAL SOC
DOI: 10.1021/nl501441w
关键词
Colloidal Nanocrystals; Cation Exchange; Molecular Dynamics; Density Functional Theory; In Situ Transmission Electron Microscopy
类别
资金
- European Soft Matter Infrastructure (ESMI)
- Stichting Nationale Computerfaciliteiten (National Computing Facilities Foundation, NCF)
- NWO
- VIDI grant from NWO
- European Research Council (ERC) [24691-COUNTATOMS, 291667-HIERARSACOL, 335078-COLOURATOMS]
- Flemish Fund for Scientific Research (FWO Vlaanderen)
Here, we show a novel solid-solid-vapor (SSV) growth mechanism whereby epitaxial growth of heterogeneous semiconductor nanowires takes place by evaporation-induced cation exchange. During heating of PbSe-CdSe nanodumbbells inside a transmission electron microscope (TEM), we observed that PbSe nanocrystals grew epitaxially at the expense of CdSe nanodomains driven by evaporation of Cd. Analysis of atomic-resolution TEM observations and detailed atomistic simulations reveals that the growth process is mediated by vacancies.
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