期刊
NANO LETTERS
卷 12, 期 5, 页码 2587-2594出版社
AMER CHEMICAL SOC
DOI: 10.1021/nl300880g
关键词
Semiconductor nanocrystals; colloidal quantum dots; silver doping; photoluminescence enhancement; cation exchange; thin-film transistors
类别
资金
- Materials World Network of the US National Science Foundation (NSF)
- German Research Foundation (DFG) [DMR-0908629, WI 981/11]
- MRSEC of the NSF [DMR-0819885]
- Industrial Partnership for Research in Interfacial and Materials Research at the University of Minnesota (UMN)
- UMN
- NSF under the NNIN
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [0908629] Funding Source: National Science Foundation
We dope CdSe nanocrystals with Ag impurities and investigate their optical and electrical properties. Doping leads not only to dramatic changes but surprising complexity. The addition of just a few Ag atoms per nanocrystal causes a large enhancement in the fluorescence, reaching efficiencies comparable to core-shell nanocrystals. While Ag was expected to be a substitutional acceptor, nonmonotonic trends in the fluorescence and Fermi level suggest that Ag changes from an interstitial (n-type) to a substitutional (p-type) impurity with increased doping.
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