標題: | Blinking suppression of single quantum dots in agarose gel |
作者: | Ko, H. C. Yuan, C. T. Lin, S. H. Tang, Jau 應用化學系 Department of Applied Chemistry |
關鍵字: | cadmium compounds;charge exchange;colloids;fluorescence;gels;II-VI semiconductors;semiconductor quantum dots;wide band gap semiconductors;zinc compounds |
公開日期: | 4-一月-2010 |
摘要: | Fluorescence blinking is commonly observed in single molecule/particle spectroscopy, but it is an undesirable feature in many applications. We demonstrated that single CdSe/ZnS quantum dots in agarose gel exhibited suppressed blinking behavior. In addition, the long-time exponential bending tail of the power-law blinking statistics was found to be influenced by agarose gel concentration. We suggest that electron transfer from the light state to the dark state might be blocked due to electrostatic surrounding of gel with inherent negatively charged fibers. |
URI: | http://dx.doi.org/10.1063/1.3280386 http://hdl.handle.net/11536/5984 |
ISSN: | 0003-6951 |
DOI: | 10.1063/1.3280386 |
期刊: | APPLIED PHYSICS LETTERS |
Volume: | 96 |
Issue: | 1 |
結束頁: | |
顯示於類別: | 期刊論文 |