answersLogoWhite

0

Silicon is by all means an indirect band gap material.

User Avatar

Wiki User

14y ago

What else can I help you with?

Continue Learning about Electrical Engineering
Related Questions

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.


Is ZnSe is direct or indirect band gap?

It is direct band gap material.


Why is silicon not used in fabrication of LED?

Silicon is an indirect band gap semiconductor


Is GAAs is a direct band gap material?

Yes it is.


Why silicon is not used for led?

bcz silicon has direct band gap.in intermediatestage its not required any external energy between conduction band and valence band..due to that radiation willbe less..more external energy more more energy radiate...


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


The gallium arsenide is prepared for laser action but silicon and germanium are not. explain why?

I think because GaAs has a direct band gap transition but Si and Ge has indirect band gap transition. Both silicon and germanium are opaque and thus cannot be used to make LASERs.


Why indirect band gap material is used for manufacturing LED's?

Optical sources like LEDs use direct band gap so that conduction band electorn can recombine directly with a hole in valence band .


Why do we mostly use indirect semiconductors?

The indirect band gap semiconductors like silicon and germanium are mostly used because they are elemental, plentiful, and easier to process than the direct band gap semiconductors which are alloys or compounds.


Why silicon does not emit light?

I agree with Binitha on the point that Silicon is an indirect band gap semiconductor.


What is power diode generally made from?

As that of most power devices power diode are maid from silicon material(because of its wide band gap) . but now days alloy of silicon are used like sic(silicon carbide) by ank


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