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Detection of low intensity light down to a few photons requires photodetectors with high gain. A new photodetector is reported based on C60‐sensitized aligned carbon nanotube (CNT) transistors with an extremely high responsivity of 108 A W−1 (gain > 108) in the ultraviolet and visible range, and 720 A W−1 (gain = 940) in the infrared range. In contrast to most sensitized phototransistors that operate...
The p-n junction diodes are formed by electrostatic doping using two gate electrodes positioned beneath individual, suspended single-walled carbon nanotubes (CNTs). These devices exhibit nearly ideal diode behavior within a small bias voltage range near 0 V. At higher bias (>\vert 0.2 V\vert), nonideal diode behavior is observed arising from Schottky contacts formed between the nanotube and its...
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