report that photodetector cells fabricated with a graphene layer between the semiconductor and gate dielectric show much higher carrier flux than devices without such a layer. In fact, they find that the number of holes generated is higher than the number of electrons, due to a unique gain ...
Using the developed device model, we calculate the photodetector characteristics as functions of the GL-vdW heterostructure parameters. We show that due to a relatively large efficiency of the electron photoexcitation and low capture efficiency of the electrons propagating over the barriers in the inter...
In summary, the results of this study provides an insight to design an improved photodetector based on Au NPs on graphene. According to the simulation results:References (34) K.F. Mak et al. Optical spectroscopy of graphene: from the far infrared to the ultraviolet Solid State Commun. (2012...
we have demonstrated an uncooled mid-infrared photodetector with zero stand-by power consumption, with a measured noise equivalent power as low as 0.12 nW Hz−1/2, which is competing with the commercial devices that require external bias. Furthermore, we observe vectorial photocurrents in...
The optical responsivity in IR-photodetector based on armchair graphene nanoribbons with p–i–n structure Armchair graphene nanoribbons (A-GNRs) are an alternative material to use in novel infrared photodetectors, because of their tunable energy gap in the infr... E Ahmadi,A Asgari,K Ahmadiniar...
photodetector2D transition metal dichalcogenides (TMDCs) have attracted considerable attention due to their impressively high performance in optoelectronic devices. However, efficient infrared (IR) photodetection has been significantly hampered because the absorption wavelength range of most TMDCs lies in the ...
Rostami, Modification of graphene oxide for applying as mid-infrared photodetector, Appl. Phys. B 120 (2015) 637-643.F. Jabbarzadeh, M. Siahsar, M. Dolatyari, G. Rostami, and A. Rostami. Modification of Graphene Oxide for Applying as Mid-Infrared Photodetector. Appl. Phys. B. 2015;...
Here, a MoTe 2 /graphene heterostructure photodetector is demonstrated for efficient near-infrared (NIR) light detection. The devices achieve a high responsivity of ≈970.82 A W 1 (at 1064 nm) and broadband photodetection (visible-1064 nm). Because of the effective photogating effect induced by ...
PhotodetectorCompositeGraphene is an amazing material with unique electrical and optical properties that have never been observed in conventional materials. Graphene can absorb light from ultraviolet to infrared and transit carriers at a speed of 1/300 of light, which make graphene an excellent ...
Club sandwich: the graphene double-layer photodetector The first room-temperature, high-sensitivity infrared photodetector has been designed by a team of researchers in the US. The device is based on the “wonder material” graphene and works across the full infrared spectrum. The detector is ...