dangling bond


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dangling bond

[¦daŋ·gliŋ ′bänd]
(solid-state physics)
A chemical bond associated with an atom in the surface layer of a solid that does not join the atom with a second atom but extends in the direction of the solid's exterior.
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Besides, the grain size is bigger with a lower dangling bond density that contributes to the absorption loss in polysilicon material.
Low loss optimization of strip channel polysilicon waveguide fabrication
The researchers could furthermore make the sloping effect disappear completely when the dangling bond is reacted with TEMPO and reappear when TEMPO is removed.
Ultimately, this leaves a more or less featureless surface on which the few remaining dangling bonds light up as beacons, since they have acquired a negative charge.
Chemical shifts
The Staebler-Wronski effect can be minimized by suitably adding hydrogen to "tie up" or passivate the dangling bonds and by making the active films so thin that the electron-hole pairs are never far from the electrodes, so that recombination is harder.
Solar photovoltaics: out of the lab and onto the production line
The role of dangling bonds and antisite effects (anion-on-cation site) is also discussed.
WJ Communications Research Scientist to Present at 19th Reliability of Compound Semiconductors Workshop -- ROCS-2004 -- Conducted by JEDEC, EIA & IEEE- Electron Devices Society
At the top of all the lists: Silicon dioxide mates with the silicon surface in such a way that so-called dangling bonds become satisfied.
Looking for Mr. Goodoxide
They then put hydrogen atoms on the ends of the tubule so the dangling bonds of the carbons there would not latch onto any molecule that came near them.
Simulated fullerene tubules act as straws
Thus, when 60 to 600 carbon atoms link up, the dangling bonds encourage the formation of hollow fullerenes, Kroto says.
Big fullerene clusters form an onion shape
These dangling bonds allow the electrons to return to their original state without emitting light, so the luminescence disappears, says Collins.
Light, chemicals modify silicon's glow
One element of the sheet forms a pentagon instead of a hexagon, and the sheet curves to allow two of the dangling bonds to attach to each other (see illustration).
Tracking an elusive carbon: scientists suspect a 'Third Man' molecule may help solve galactic mysteries

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