Search results
Results From The WOW.Com Content Network
Graphene solar cells use graphene's unique combination of high electrical conductivity and optical transparency. [103] This material absorbs only 2.6% of green light and 2.3% of red light. [ 104 ] Graphene can be assembled into a film electrode with low roughness.
Doped graphene layers have also shown the similar surface plasmon effects to that of metallic thin films. [7] [8] Through the engineering of metallic substrates or nanoparticles (e.g., gold, silver and copper) with graphene, the plasmonic properties of the hybrid structures could be tuned for improving the optoelectronic device performances.
Graphene is the strongest material ever tested, [7] [8] with an intrinsic tensile strength of 130 GPa (19,000,000 psi) (with representative engineering tensile strength ~50-60 GPa for stretching large-area freestanding graphene) and a Young's modulus (stiffness) close to 1 TPa (150,000,000 psi).
The graphene spray gun would be utilized onto large-scale applications such as circuits, radio transmitters, and optical electronics due to its transparency and its high electrical conductivity. [2] The supersonic spray system was first developed in May 2014 by University of Illinois professor Alexander Yarin , and Korea University professor ...
A two-dimensional semiconductor (also known as 2D semiconductor) is a type of natural semiconductor with thicknesses on the atomic scale. Geim and Novoselov et al. initiated the field in 2004 when they reported a new semiconducting material graphene, a flat monolayer of carbon atoms arranged in a 2D honeycomb lattice. [1]
The electronic properties of graphene are significantly influenced by the supporting substrate. [59] [60] The Si(100)/H surface does not perturb graphene's electronic properties, whereas the interaction between it and the clean Si(100) surface changes its electronic states significantly. This effect results from the covalent bonding between C ...
Graphene quantum dots (GQDs) are graphene nanoparticles with a size less than 100 nm. [1] Due to their exceptional properties such as low toxicity, stable photoluminescence , chemical stability and pronounced quantum confinement effect, GQDs are considered as a novel material for biological, opto-electronics, energy and environmental applications.
The energy gaps increase from -0.02 eV to 0.02 eV for the strain between -0.02 and 0.02, which provides the feasibilities for future engineering applications. The tensile strength of the armchair graphene nanoribbons is 175 GPa with the great ductility of 30.26% fracture strain, [ 32 ] which shows the greater mechanical properties comparing to ...