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We have designed, fabricated, and characterized novel p-n junction photodetectors based on macroscopic single-wall carbon nanotube films. A broadband responsivity up to ∼ 1 V/W was observed at the junction region. By controlling for substrate and doping levels, we determined that the mechanism is the photothermoelectric effect, which is supported by a theoretical model.
Single‐wall carbon nanotubes (SWCNTs), with their uniquely simple crystal structures and chirality‐dependent electronic and vibrational states, provide an ideal laboratory for the exploration of novel 1D physics, as well as quantum engineered architectures for applications in optoelectronics. This article provides an overview of recent progress in optical studies of SWCNTs. In particular, recent progress...
We have studied the photoresponse of highly aligned carbon nanotube devices in the visible, near-infrared, and mid-infrared. Using different metal combinations for electrodes, we designed detectors that work up to 10 μm under global illumination.
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