• Corpus ID: 118563162

Direct evidence of photo-ionization causing luminescence "off" state in CdTe Quantum dots

@article{Murthy2012DirectEO,
  title={Direct evidence of photo-ionization causing luminescence "off" state in CdTe Quantum dots},
  author={A. Radhakrishna Murthy and Padmashri V. Patil and Shouvik Datta and Shivprasad Patil},
  journal={arXiv: Mesoscale and Nanoscale Physics},
  year={2012}
}
We present a direct experimental evidence of photo-ionized CdTe quantum dot core having luminescence "off" state at band-edge photo-excitation. We use the autocorrelation of fluorescence fluctuations from dilute colloidal solution of CdTe quantum dots in a diffraction limited detection volume to determine their photo-ionization probability. The ionization probability is in the same order of magnitude (\approx10-6) as the CdSe and CdSe/ZnS core/shell quantum dots. Further, we measured the… 

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