Semiconductor materials: gallium arsenide, Physics

Assignment Help:

 

Energy gap: 1.4ev at room temperature

Its charactistics are very closely related to those of germanium. This is under stable, since Gallium is the third column neighbour and arsenic is the fifth column neighbour of Gallium in the periodic table. The melting point is 13000C, makes the production of gallium arsenide of electronic grade and externally difficult one. Horizontal furnaces using zone refining technique have proved the best, but the resulting material is still is not competitive with silicon and germanium in the purity or structural perfection. It is used for Scotty diodes, light emitting diodes, gun diodes, and lasers. 

 


Related Discussions:- Semiconductor materials: gallium arsenide

Cell emf, CELL EMF: The size of a cell has no bearing on the emf that i...

CELL EMF: The size of a cell has no bearing on the emf that it will produce, the generated emf being determined solely by the materials used in its construction. Another point

Find momentum if the resultant force acting on a body, If the resultant for...

If the resultant force acting on a body of constant mass is zero, the body's momentum is: a) Increasing b) Decreasing b) Always zero d) Constant Ans: If

How many joules of heat are radiated in 10 seconds, The potential differenc...

The potential difference across a 4 ohm resistor is 20 volts.  Suppose that all of the energy dissipated by this resistor is in the form of heat, how many joules of heat are ra

Crystal growth, various techniques involved in crystal growth

various techniques involved in crystal growth

Phase angle, Two particles execute S.H.M of same amplitude and frequency ,a...

Two particles execute S.H.M of same amplitude and frequency ,along the same straight line from same mean position.They cross one another without collision,when going in opposite di

Calculate power required to operate the fan, A centrifugal fan is used to p...

A centrifugal fan is used to pump air. The fan rotor is 1 ft in diameter, and the blade spacing is 2 in. The air enters with no angular momentum and exits radially with respect to

Moment of disk or solid cylinder about axis, Moment of Disk or Solid Cylind...

Moment of Disk or Solid Cylinder about Axis We presume the axis of rotation is perpendicular to the disk and through its center and coincident with the axis of the cylinder. Co

How several pounds does one gallon of water weigh, Q. How several pounds do...

Q. How several pounds does one gallon of water weigh? Answer:- One wine measure or else US gallon of water weighs 8.34 pounds. An imposing Gallon is ten pounds of water at

Vector, Find the resultant of two vectors defined as A=6km east B=8km nort...

Find the resultant of two vectors defined as A=6km east B=8km north

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd