Unconventional gap state of trapped exciton in lead sulfide quantum dots.

@article{Lewis2010UnconventionalGS,
  title={Unconventional gap state of trapped exciton in lead sulfide quantum dots.},
  author={Jennifer E. Lewis and Si-xin Wu and Xue jun Jiang},
  journal={Nanotechnology},
  year={2010},
  volume={21 45},
  pages={
          455402
        }
}
  • Jennifer E. Lewis, Si-xin Wu, Xue jun Jiang
  • Published in Nanotechnology 2010
  • Materials Science, Medicine
  • Exciton states in lead selenide (PbSe) and lead sulfide (PbS) quantum dots have been studied extensively. However, relatively less attention has been paid to the states within the quantum dot bandgap. Our experimental results have revealed a single in-gap state which bears confinement dependence yet cannot be explained by dark exciton theory, nor is it a trap state related to quantum dot surface defects as previously observed. A detailed analysis of the temperature dependence of… CONTINUE READING

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