Reverse Short Channel Effect

Reverse Short Channel Effect

The reverse short-channel effect is a secondary effect describing the reduction in threshold voltage Vth in MOSFETs with non-uniformly doped channel regions as the gate length increases. Since drive current is primarily determined by Vth, longer channel devices have more driving ability.

Reverse short channel effect (RSCE) is a result of non-uniform channel doping (halo doping ) in modern processes. To combat drain-induced barrier lowering (DIBL), MOSFET channels are more doped near the source and drain terminals to reduce the size of the depletion region in the vicinity of these junctions (called "halo doping" to describe the limitation of this heavy doping to the immediate vicinity of the junctions). At short channel lengths the halo doping of the source overlaps that of the drain, increasing the average channel doping concentration, and thus increasing the threshold voltage. This increased threshold voltage requires a larger gate voltage for channel inversion. However, as channel length is increased, the halo doped regions become separated and the doping mid-channel approaches a lower background level dictated by the body doping. This reduction in average channel doping concentration means Vth initially is reduced as channel length increases, but approaches a constant value independent of channel length for large enough lengths.


Wikimedia Foundation. 2010.

Игры ⚽ Нужна курсовая?

Look at other dictionaries:

  • Channel Tunnel — Map of the Channel Tunnel Overview Location English Channel (Strait of Dover) Coordinates Folkestone …   Wikipedia

  • Channel state information — In wireless communications, channel state information (CSI) refers to known channel properties of a communication link. This information describes how a signal propagates from the transmitter to the receiver and represents the combined effect of …   Wikipedia

  • Mass Effect (video game) — Mass Effect Developer(s) BioWare (Xbox 360) Demiurge Studios (Microsoft Windows[1] …   Wikipedia

  • List of effects — This is a list of names for observable phenonema that contain the word effect, amplified by reference(s) to their respective fields of study. #*3D audio effect (audio effects)A*Accelerator effect (economics) *Accordion effect (physics) (waves)… …   Wikipedia

  • 1996 Channel Tunnel fire — See also: 2008 Channel Tunnel fire Location of the 1996 Channel Tunnel fire The Channel Tunnel fire of 18 November 1996 occurred on a train carrying heavy goods vehicles (HGVs) and their drivers through the Channel Tunnel from France to Great… …   Wikipedia

  • Venturi effect — The Venturi effect is the fluid pressure that results when an incompressible fluid flows through a constricted section of pipe. The Venturi effect may be derived from a combination of Bernoulli s principle and the equation of continuity. The… …   Wikipedia

  • ECONOMIC AFFAIRS — THE PRE MANDATE (LATE OTTOMAN) PERIOD Geography and Borders In September 1923 a new political entity was formally recognized by the international community. Palestine, or Ereẓ Israel as Jews have continued to refer to it for 2,000 years,… …   Encyclopedia of Judaism

  • List of experiments from Lilo & Stitch — Kixx redirects here. For the soccer team, see Philadelphia Kixx. Image of experiment 626, also known as Stitch. The most popular of the experiments. This is a list of experiments from the Disney animated Lilo Stitch franchise, a series of… …   Wikipedia

  • Nanofluidic circuitry — is a nanotechnology aiming for control of fluids in nanometer scale. Due to the effect of an electrical double layer within the fluid channel, the behavior of nanofluid is observed to be significantly different compared with its microfluidic… …   Wikipedia

  • List of Di-Gata Defenders characters — This is the list of both known major and minor characters for the animated television series Di Gata Defenders.Main Six DefendersSeth (voiced by Noah Cappe):At the age of fourteen (age at Trouble in Paradise ) Seth is the leader of the Di Gata… …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”