Other semiconductor materials, Physics

Assignment Help:

 

GALLIUM PHOSPIDE: It has band gap of 2.3ev. it can be used for light emitting diodes which can emit  green or red light. The red light is obtained with zinc or cadmium oxide doping.                                                               

SELENIUM: It is found in crystalline and non-crystalline form. It is used as rectifier material for photo voltaic cells and for xerographic printing. Selenium films are used as photo electric light meters. Its melting point is 2200C.

LEAD: it is soft heavy and bluish gray metal. It is highly resistant to many chemical actions but can corrode by nitric acid, lime and rotten organic substances. Lead and its compounds are toxic. It is mechanically weak it cannot withstand vibrations at high temperatures. It alloys easily with Tin and zinc and forms many commercial alloys, including solders and bearing metals.


Related Discussions:- Other semiconductor materials

How many amps of current in 150-watt 120 volt light bulb, Used normally, a ...

Used normally, a 150-watt, 120 volt light bulb requires how many amps of current? Ans: Used generally, a 150-watt, 120 volt light bulb needs 1.25 amps.

Explain units of coulomb and candle, Coulomb: Coulomb is the fundamental u...

Coulomb: Coulomb is the fundamental unit of charge. It is explained as the charge required to obtain 9?109 newton of force among two equal charges separated at a distance of one m

Laws of motion.., A monkey of mass m climbs a rope slung over a light frict...

A monkey of mass m climbs a rope slung over a light frictionless pulley.The opposite end of the rope is tied to a block of Mass M lying on a smooth horizontal plane.Find the accele

Describe dispersive power of a medium for a pair of colours, What do you me...

What do you mean by lateral shift produced by a parallel sided glass slab for grazing incidence of light? Describe dispersive power of a medium for a pair of colours.

Critical temperature in superconductors resistance , why at critical temper...

why at critical temperature in superconductors resistance becomes zero? Solution) For conductors as the temperature increases their rasistance increases and as temperature decreas

Explain term pitch, Pitch: It is the characteristics of a sound by whic...

Pitch: It is the characteristics of a sound by which we can distinguish among a grave and shrill sound is known as pitch. It depends on frequency of the vibrating body and expr

Bcs throry, bcs theory of superconductivity.

bcs theory of superconductivity.

What is the electric potential, S uppose you have two parallel, metal plate...

S uppose you have two parallel, metal plates that have an electric field between them of strength 3.0 x 10 4 N/C, and are 0.050 m apart. Consider a point, P, located 0.030 m fr

A simple model of the earth and moon, A simple model of the earth and moon ...

A simple model of the earth and moon The earth can be shown by an orange or other round object stuck on a piece of bamboo or a meat skewer. A piece of bent wire or knitting nee

Experiment of Clock spring balance, Clock spring balance A sensitive ba...

Clock spring balance A sensitive balance for use among 0-1 g or 1-10 g is readily made using a piece of clock spring and a block of wood or cotton reel.  Fasten the wooden b

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