1T-TaS2 is a strongly correlated material exhibiting charge density waves at room temperature. These nearly commensurate charge density-waves make 1T-TaS2 extremely sensitive to external stimuli. Using light, heat, DC, and AC electrical biases to tune the optical properties of TaS2, we demonstrate tunable metasurfaces.
Here, we report a photodetector (PD) based on heterogeneous integration of Few-layer MoTe2integrated on MRR by using our developed 2D printer technique. The device is realized in a two-terminal in-plane electrode configuration without applying external gating, showing a responsivity of (~0.1 A/W).
In this paper, we discuss application of tunable plasmon resonance in graphene for design of multi-purpose beam-forming metasurfaces without changing geometric features and dynamic label-free detection of trace gas at terahertz and mid-infrared frequencies.
The photon trapping nano-structures help to enhance quantum efficiency in ultra-thin photodetectors that allows to design faster devices. The study shows simulations for light trapping and carriers transport in Si MSM photodetector with micro- holes structure at wavelength 800-950nm.
Thermal photodetectors are uniquely capable of sensing radiation at any electromagnetic frequency, however, their millisecond-scale response times limit their performance and applicability. Here we demonstrate a room-temperature, spectrally-selective thermal photodetector operating at GHz speeds by integrating a plasmonic metasurface with an aluminum nitride pyroelectric film.