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As a new class of fluorescent carbon nanomaterials, CQDs possess the attractive properties of high stability, good conductivity, low toxicity, environmental friendliness, simple synthetic routes as well as comparable optical properties to quantum dots. [6] Carbon quantum dots have been extensively investigated especially due to their strong and ...
Type I quantum dots are composed of a semiconductor core encapsulated in a second semiconductor material with a larger bandgap, which can passivate non-radiative recombination sites at the surface of the quantum dots and improve quantum yield. Inverse type I quantum dots have a semiconductor layer with a smaller bandgap which leads to ...
A carbon nanotube quantum dot (CNT QD) is a small region of a carbon nanotube in which electrons are confined. Formation
Pages in category "Quantum dots" The following 19 pages are in this category, out of 19 total. ... Quantum dot; B. Brus equation; C. Cadmium-free quantum dot; Carbon ...
A single-walled carbon nanotubes (SWCNT) can be envisioned as strip of a graphene molecule (a single sheet of graphite) rolled and joined into a seamless cylinder.The structure of the nanotube can be characterized by the width of this hypothetical strip (that is, the circumference c or diameter d of the tube) and the angle α of the strip relative to the main symmetry axes of the hexagonal ...
Quantum dots (QDs) are nano-scale semiconductor particles on the order of 2–10 nm in diameter. They possess electrical properties between those of bulk semi-conductors and individual molecules, as well as optical characteristics that make them suitable for applications where fluorescence is desirable, such as medical imaging.
Carbon quantum dot, a carbon nanoparticle which is less than 10 nm in size and has some form of surface passivation; Chuanqiandian Cluster Miao language (ISO 639-3: cqd), a Hmongic language spoken by the Hmong people; Shahrekord Shahid Estaki International Airport (IATA: CQD), an airport in Shahrekord, Chaharmahal & Bakhtiari, Iran
In addition, nanowires are also being studied for use as photon ballistic waveguides as interconnects in quantum dot/quantum effect well photon logic arrays. Photons travel inside the tube, electrons travel on the outside shell. When two nanowires acting as photon waveguides cross each other the juncture acts as a quantum dot.