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Keywords:

  • dark current;
  • flexible electronics;
  • PbI2;
  • tensile strain

We report the experimental study on the electrical characteristics of a flexible device based on PbI2 crystal. It is found that the ohmic contact characteristics remain the same, but the dark current decreased with increasing mechanical tensile strain. The value of the bandgap Eg = 2.28 eV obtained from optical absorption spectra is kept in a steady state during bending, but a widening of the band-tail state occurs.