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C is a conductor, so valence and conduction bands overlap.
if you mean SiC, silicon carbide, energy gap is ~2.86eV @ 300K (ambient temperature)
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Is silicon a direct band gap material?
Silicon is by all means an indirect band gap material.
Why is silicon not used in fabrication of LED?
Silicon is an indirect band gap semiconductor
What are the Characteristics of Direct and indirect band gap semiconductors?
Direct band semconductors are mostly for LEDs. Indirect band semiconductors like Si and Ge are conventional diodes.
Give some Examples of direct and indirect band gap semiconductors?
direct band gap-semiconductor in which the bottom of the conduction band and the top of the valence band occur at the momentum k=0;in the case of d.b.s. energy released during band-to-band electron recombination with a hole is converted primarily into radiation (radiant recombination); wavelength of emitted radiation is determined by the energy gap of semiconductor; examples of d.b.s. GaAs, InP, ZnS, ZnSs, CdS, CdSe etc. indirect bandgap semiconductor --semiconductor in which bottom of the conduction band does not occur at effective momentum k=0, i.e. is shifted with respect to the top of the valence band which occurs at k=0; energy released during electron recombination with a hole is converted primarily into phonon; e.g. Si, Ge, GaP, GaAsp ,Ge etc, .
What is forbidden gap?
When atoms are brought close together, as in a solid, the electrons come under the influence of forces from other atoms, where the energy level merges into bands of energy levels. There are two distinct energy bands in which electrons could exist: the valence band and the conduction band . Separating these two bands is an energy gap , termed the forbidden gap, in which electrons cannot normally exist.Avinash SinghJr. YSR (ISCA)Mech. Eng.KIIT UnivesityBBSR
Why carbon is not used as semiconductor material?
carbon is not used as the semiconductor because it has larger band gap than silicon and germenium
When was The Gap Band created?
The Gap Band was created in 1967.
What does gap stand for in the gap band?
greenwood archer and pine street band
When was The Gap Band II created?
The Gap Band II was created in 1979.
When was Gap Band IV created?
Gap Band IV was created in 1981.
When was The Gap Band III created?
The Gap Band III was created in 1980.
Is ZnSe is direct or indirect band gap?
It is direct band gap material.
Titanium dioxide is direct band gap or indirect band gap material?
Yes it is. Most Sn (tin) materials as semiconductors are direct band gap materials. Silicon on the other hand is an indirect band gap material.
DOes Charlie Wilson sing Gap Band songs in concert?
The Gap Band consists of brothers Charlie, Robert and Ronnie Wilson, the band first formed as the Greenwood, Archer and Pine Street Band in 1967. The group later changed their name to The Gap Band. Look up "You dropped a bomb on me" by The Gap Band.
What different between band gap silicon amorphous with crystaline?
Amorphous Silicon (a-Si) has band gap of about 1.7eV, whereas crystalline (c-Si) only has a band gap of 1.1eV
Which type of band gap does GaAs have?
Gallium Arsenide (GaAs) has a 2.5eV band gap (@ 295 K)
What is the band gap energy in si and ge?
at 300 Kelvin, silicon band gap is 1.11 eV, Germaium band gap is 0.66 eV.source: hyperphysics.phy-astr.gsu.edu/hbase/Tables/Semgap.html
