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Keywords:

  • graphene;
  • molecular electronics;
  • organic field-effect transistors;
  • voltage amplifiers;
  • voltage gain
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A graphene audio voltage amplifier is fabricated by overlapping the gate with source/drain contacts. The fabricated complementary amplifier has a voltage gain of 3.7 (11.4 dB) at 10 kHz, a total harmonic distortion in the audio frequency range of <1%, a unity-gain frequency of 360 kHz, and a −3 dB bandwidth of 70 kHz.