High optical absorption in grapheneS. Peter ApellCarl Hgglundgeorge hanson
Graphene has offered a broad spectral bandwidth potentially up to B500 GHz and fast response time down to B1.5 ps in PD applications3–9, but weak light absorption and low gain have limited key figures of merit such as quantum efficiency (QE), responsivity and noise equivalent power (NEP) ...
Searching for advanced microwave absorption (MA) nanomaterials is one of the most feasible ways to address the increasing electromagnetic pollution in both military and civil fields. To this end, graphene and MXene have won the widespread attention as the main representatives due to their remarkable...
Graphene quantum dots (GQDs) have received much attention due to their novel phenomena of charge transport and light absorption/emission. The optical transitions are known to be available up to ,6 eV in GQDs, especially useful for ultraviolet (UV) photodetectors (PDs). Thus, the demonstration ...
来源期刊 Polymer the International Journal for the Science & Technology of Polymers 研究点推荐 high performance supercapacitor electrode graphene/vitamin C template-controlled polyaniline nanotubes composite graphene nanosheet/polyaniline nanotube (GPNT) 引用走势 2017 被引量:4 0...
A graphene coated microfiber Bragg grating (GMFBG) for gas sensing is reported in this Letter. Taking advantage of the surface field enhancement and gas absorption of a GMFBG, we demonstrate an ultrasensitive approach to detect the concentration of chemical gas. The obtained sensitivities are 0.2...
However, the responsivity of graphene-based photodetectors has so far been limited to tens of mA W(-1) (refs 5-10) due to the small optical absorption of a monolayer of carbon atoms. Integration of colloidal quantum dots in the light absorption layer can improve the responsivity of graphene...
The localized surface plasmon resonance (LSPR) of B-doped Si QDs enhances the MIR absorption of graphene. The electron-transition-based optical absorption of B-doped Si QDs in the ultraviolet (UV) to near-infrared (NIR) region additionally leads to photogating for graphene. The resulting UV-to...
suitable to serve as part of the electrode for applying a gate voltage bias to tune the graphene conductivity, resulting in shifted/damped resonant dispersion of the nanoantenna array and thus frequency tuning of the metasurface absorption. The high-speed modulation is in part due to the low ...
Graphene quantum dots (GQDs) have received much attention due to their novel phenomena of charge transport and light absorption/emission. The optical transitions are known to be available up to ~6 eV in GQDs, especially useful for ultraviolet (UV) photodetectors (PDs). Thus, the demonstration...