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Enhancing the graphene photocurrent using surface plasmons and …
American scientists have developed graphene photodetectors with unprecedented compactness, ultra-broadband detection, and ultrafast response speeds. In addition to being inexpensive, lightweight ...
Photoconductivity of biased graphene | Nature Photonics
Scientists report that the photovoltaic effect and a photo-induced bolometric effect, rather than thermoelectric effects, dominate the photoresponse during a classic photoconductivity experiment ...
In-fiber photoelectric device based on graphene-coated tilted fiber …
Graphene and related two-dimensional materials have attracted great research interests due to prominently optical and electrical properties and flexibility in integration with versatile photonic structures. Here, we report an in-fiber photoelectric device by wrapping a few-layer graphene and bonding a pair of electrodes onto a tilted …
High-Performance Photodetectors Based on Semiconducting Graphene …
The inherent zero-band gap nature of graphene and its fast photocarrier recombination rate result in poor optical gain and responsivity when graphene is used as the light absorption medium in photodetectors. Here, semiconducting graphene nanoribbons with a direct bandgap of 1.8 eV are synthesized and employed to construct a vertical …
Optoelectronic and photoelectric properties and applications of …
Graphene''s ultra-high carrier mobility, ultra-strong ballistic transport effect, ultrafast optical response time, and ultra-wide spectral response range give it excellent …
Optimized photoelectric performance of MoS2/graphene …
Swift heavy ions irradiation induced local annealing, interface coupling and excitation conversion can enhance the photocurrent and photoelectric responsivity of the MoS 2 /G FETs. • The MoS 2 /G FETs fabricated in …
Highly conductive free-standing reduced graphene oxide thin films for fast photoelectric …
Fig. 3 c and d are the SEM images of the RGO thin film prepared by five drop-casting cycles. The surface of the RGO thin film is generally smooth but with some folds arising from the natural ease of graphene to fold. The root mean square roughness (Rq) and the arithmetic average roughness (Ra) of the RGO thin film were estimated on …
Deep-ultraviolet electroluminescence and photocurrent generation in graphene/hBN/graphene …
Here, the authors report the observation of deep-ultraviolet (DUV) electroluminescence and photocurrent generation in van der Waals heterostructures based on hBN crystals, showing potential for ...
Graphene oxide for photonics, electronics and optoelectronics
Graphene oxide for photonics, electronics and ...
Graphene Properties, Synthesis and Applications: A Review
We have evaluated some of the most recent breakthroughs in the synthesis and applications of graphene and graphene-based nanomaterials. This review includes three major categories. The first section consists of an overview of the structure and properties, including thermal, optical, and electrical transport. Recent developments in the …
Graphene Multilayer Photonic Metamaterials: Fundamentals and …
Graphene is given high expectation due to their unique properties and advantages and has revolutionized different research fields and leads to enormous applications. However, monolayer graphene shows limited absorption due to the ultrathin thickness, which ...
Enhanced photoelectric responsivity of bilayer graphene/GaAs …
The design of a grating structure on the surface of bilayer p-graphene/n-GaAs can excite a plasmon mode to enhance the photoelectric performance of …
High-Performance Photodetectors Based on Semiconducting …
One strategy to enhance the performance of graphene-based photodetectors is by integrating graphene with semiconductors such as Si, MoS 2 and …
Building efficient photoelectric properties with Si/Graphene/ZnO …
ZnO/Graphene/Si films were prepared by combining chemical vapor deposition (tube furnace) and Physical vapor deposition (magnetron sputtering) methods, and the interface morphology, grain growth and photoelectric properties of ZnO/Graphene/Si films were
[1107.4176] Strong Plasmonic Enhancement of Photovoltage in …
Here we show that, by combining graphene with plasmonic nanostructures, the efficiency of graphene-based photodectors can be increased by up to 20 times, due to …
Single-layer graphene-TiO2 nanotubes array heterojunction as photoanode to enhance the photoelectric …
Through the above two methods, we kept the nanotube structure of TiO 2 and used graphene to reduce its bandgap energy, in order to improve the photoelectric performance of photoanode. The UV–Vis spectrum shows that the bandgap energy of TiO 2 decreased from 3.17 eV to 2.88 eV.
Progress in Graphene-Based Two-Dimensional Heterostructures and their Photoelectric Properties …
Then the photoelectric applications of graphene-based 2D heterostructures are summarized. Registration Log In Distribution & Access ... Strong light-matter interactions in heterostructures of atomically thin films, J. Science. 340 (2013) No. 6138, pp.1311-1314 ...
Flexible graphene photodetectors for wearable fitness monitoring …
Here, we demonstrate a new class of flexible and transparent wearables based on graphene sensitized with semiconducting quantum dots (GQD). We show …
Revolution-assisted direct writing of highly controllable spiral graphene fibers with ultrasensitive photoelectric response …
Because of the preferable stretchability and electrical conductivity (1.5 × 10 4 S m −1), the spiral graphene fiber may be used as a stretchable photoelectrode for photoelectric detection after surface modification with a photoactive TiO 2 layer. As shown in Fig. 3 a, TiO 2 nanoparticles with an average diameter of about 20 nm were uniformly …
Photoexcitation cascade and multiple hot-carrier generation in graphene …
Photoexcitation cascade and multiple hot-carrier ...
Synergistic-potential engineering enables high-efficiency graphene …
Synergistic-potential engineering enables high-efficiency ...