• Corpus ID: 218971630

Observation of long excitation lifetime in photoexcited Sb-doped $\text{Bi}_2\text{Se}_3$ nanoplatelets

@article{Gross2020ObservationOL,
  title={Observation of long excitation lifetime in photoexcited Sb-doped \$\text\{Bi\}\_2\text\{Se\}\_3\$ nanoplatelets},
  author={Adam L. Gross and Yasen Hou and Antonio Rossi and Dong Yu and Inna M. Vishik},
  journal={arXiv: Mesoscale and Nanoscale Physics},
  year={2020}
}
$\text{Bi}_2\text{Se}_3$ is an ideal three-dimensional topological insulator in which the chemical potential can be brought into the bulk band gap with antimony doping. Here, we utilize ultrafast time-resolved transient reflectivity to characterize the photoexcited carrier decay in $\text{Bi}_{2-x}\text{Sb}_x\text{Se}_3$ nanoplatelets. We report a substantial slowing of the bulk carrier decay rate in bulk-insulating $\text{Bi}_{2-x}\text{Sb}_x\text{Se}_3$ nanoplatelets as compared to n-type… 

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