中国物理B ›› 2024, Vol. 33 ›› Issue (3): 36102-036102.doi: 10.1088/1674-1056/ad1090
Photostability of colloidal single photon emitter in near-infrared regime at room temperature
Si-Yue Jin(靳思玥)1,2 and Xing-Sheng Xu(许兴胜)1,2,3,†
- 1 Key Laboratory of Optoelectronic Materials and Devices, Chinese Academy of Sciences, Beijing 100083, China;
2 Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China;
3 Hefei National Laboratory, Hefei 230088, China
Photostability of colloidal single photon emitter in near-infrared regime at room temperature
Si-Yue Jin(靳思玥)1,2 and Xing-Sheng Xu(许兴胜)1,2,3,†
- 1 Key Laboratory of Optoelectronic Materials and Devices, Chinese Academy of Sciences, Beijing 100083, China;
2 Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China;
3 Hefei National Laboratory, Hefei 230088, China
摘要： The photostability of a colloidal single photon emitter in near-infrared regime at room temperature is investigated. The fluorescence lifetime, blinking phenomenon, and anti-bunching effect of a single CdTeSe/ZnS quantum dot with an emission wavelength of 800 nm at room temperature are studied. The second-order correlation function at zero delay time is much smaller than 0.1, which proves that the emission from single quantum dots at 800 nm is a highly pure single-photon source. The effects of the irradiation duration on the fluorescence from single quantum dots are analyzed. The experimental results can be explained by a recombination model including a multi-nonradiative recombination center model and a multi-charged model.
中图分类号: (Structure of nanocrystals and nanoparticles ("colloidal" quantum dots but not gate-isolated embedded quantum dots))
- 61.46.Df