In this work, a graphene quantum interference (QI) photodetector was simulated in two regimes of operation. The structure consists of a graphene nanoribbon, Mach-Zehnder interferometer (MZI), which exhibits a strongly resonant transmission of electrons of specific energies. In the first regime of operation (that of a linear photodetector), low intensity light couples two resonant energy levels,...

Recently, very exciting optoelectronic properties of Topological insulators (TIs) such as strong light absorption, photocurrent sensitivity to the polarization of light, layer thickness and size dependent band gap tuning have been demonstrated experimentally. Strong interaction of light with TIs has been shown theoretically along with a proposal for a TIs based broad spectral photodetector havi...

There is an emerging interest in vertically-integrated CMOS (VI-CMOS) image sensors. This trend arises from the difficulty in achieving high SNR, high dynamic range, and high frame rate with planar technologies while maintaining small pixel sizes, since the photodetector and electronics have to share the same pixel area and use the same technology. Fabrication methods for VI-CMOS image sensors ...

In this paper an estimation for the performance of QDIP as an element of FSO communication system is given and availiable solutions are compared against the requirements of FSO communication systems. A discussion of QDIP parameters has been presented through theoretical models and experimental data from literature. A relation is proposed for QDIP carrier capture limited modulation bandwith and ...

We demonstrate an efficient core-shell GaAs/AlGaAs nanowire photodetector operating at room temperature. The design of this nanoscale detector is based on a type-I heterostructure combined with a metal-semiconductor-metal (MSM) radial architecture, in which built-in electric fields at the semiconductor heterointerface and at the metal/semiconductor Schottky contact promote photogenerated charge...

Improving the sensitivity of a near-infrared nanocomposite photodetector by enhancing trap induced hole injection" (2015).