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

Terrestrial telescope and astronomical telescope, Distinguish between a ter...

Distinguish between a terrestrial telescope and an astronomical telescope. Explain Rams dens' eye piece with the help of a neat diagram. Illustrate its advantages and disadvantages

Breakdown voltage, It is a parameter of an insulator that defInes the maxim...

It is a parameter of an insulator that defInes the maximum voltage difference that can be applied across the material before the insulator collapse and conducts.

Packing fraction in nuclear physics, what is the physical signification of ...

what is the physical signification of packing fraction in nuclear physics?

What is a newton meter, What is a Newton meter? A unit of energy also c...

What is a Newton meter? A unit of energy also called a Joule. When a force of 1 Newton is applied on an object for a distance of 1 meter then 1 Joule of energy is used. It is t

9th, what is dynamics

what is dynamics

Determine the magnitude, Determine the Magnitude The cantilevered beam...

Determine the Magnitude The cantilevered beam shown below has two force couples acting on it as shown.  The value of C1 in Newtons is given in P25.  Determine the magnitude of

What effect does this have on eclipses, Q. If the moons orbit is inclined s...

Q. If the moons orbit is inclined somewhat relative to the Earth's orbit what effect does this have on eclipses? Answer:- This makes eclipses rarer as well as if the moon's

Astronaut catch- momentum and collisions, Astronaut Catch A question su...

Astronaut Catch A question such as this includes momentum principles. In any example in that two objects collide and can be considered isolated from all other net forces and th

Free fall , wrench from the top of an 80 m high tower what is the velocity ...

wrench from the top of an 80 m high tower what is the velocity of the wrench when it strikes the ground?

Experiment of a single fixed pulley, A single fixed pulley Set up a one...

A single fixed pulley Set up a one fixed pulley as shown in the diagram below. By means of weights see how much force is needed to lift weights of 25, 50, 75, 100 and 200 g. Ca

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