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Keywords:

  • organic photodetectors;
  • linear dynamic ranges;
  • buffer layers;
  • noise;
  • fullerene
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A low-noise fullerene-based organic photodetector with high sensitivity to weak light is enabled by a cross-linkable buffer layer. The device shows an excellent linear response from indoor light intensity to 12 pW/m2, corresponding to a linear dynamic range (LDR) of 90 dB. This is among the highest reported LDR for any organic photodetector, and larger than those of inorganic photodetectors such as GaN (50 dB) and InGaAs (66 dB).