Abstract
Recognition of single quantum dots (QDs) from high multi-exciton emission and clustering effects is challenging using the conventional second-order correlation function method. Here we demonstrate a method for fast recognizing single QDs based on the probabilities of detecting single- and two-photon events. The time-tagged, time-resolved and time-correlated single-photon counting technique is applied to effectively remove multiexciton emission and low-counting background. By this way, single QDs can be fastly recognized by the spatial coincidence-counting model. In addition, the fast recognition of single QDs by using the collected photons during the confocal scanning imaging process has been achieved synchronously.
| Original language | English |
|---|---|
| Pages (from-to) | 4674-4685 |
| Journal | Optics Express |
| Volume | 26 |
| Issue number | 4 |
| Online published | 13 Feb 2018 |
| DOIs | |
| Publication status | Published - 19 Feb 2018 |
Research Keywords
- Spectroscopy, time-resolved
- Fluorescence, laser-induced
- Nanomaterials
Publisher's Copyright Statement
- © 2019 Optical Society of America. Users may use, reuse, and build upon the article, or use the article for text or data mining, so long as such uses are for non-commercial purposes and appropriate attribution is maintained. All other rights are reserved.
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