Carbon nanotube light sensors with linear dynamic range of over 120 dB
We show that a carbon nanotube (CNT) diode fabricated by asymmetric contacts shows a
linear photocurrent in response to illumination for over six decades or dynamic range of 120
dB; in particular, it shows no sign of degradation under illumination intensity of up to 100
kW/cm 2. This CNT diode also exhibits a continued response for incident wavelength from
1165 nm to 2100 nm, promising potentials applications in robust and wide bandwidth light
sensing.The key parameters characterizing a photodetector include responsivity, quantum …
linear photocurrent in response to illumination for over six decades or dynamic range of 120
dB; in particular, it shows no sign of degradation under illumination intensity of up to 100
kW/cm 2. This CNT diode also exhibits a continued response for incident wavelength from
1165 nm to 2100 nm, promising potentials applications in robust and wide bandwidth light
sensing.The key parameters characterizing a photodetector include responsivity, quantum …
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