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

Define amu and mass defect, Q. Define: 1 amu One atomic mass unit is th...

Q. Define: 1 amu One atomic mass unit is thinks as one twelfth of the mass of carbon atom 6 C 12 . 1 amu = 1.66 X 10 -27 kg. Q. Define: mass defect. The dissimi

What is instantaneous speed and velocity, Instantaneous velocity and speed ...

Instantaneous velocity and speed are explained at a certain instant and are shown by

GM tube, what is dead time of GM tube

what is dead time of GM tube?

What is the boat speed relative to the dock, A river is flowing 4.0 m/s to ...

A river is flowing 4.0 m/s to the east. A boater on the south shore plans to reach a dock on the north shore 30.0° downriver by heading directly across the river. a. What shoul

IR frequencies of various functional groups, What are the ir frquencies of ...

What are the ir frquencies of various functional groups

Radioactivity, Why nuclear fission preceeds nuclear fusion?

Why nuclear fission preceeds nuclear fusion?

Rotation, A bicycle has tires of radius 0.35 meters. If the bicycle is tra...

A bicycle has tires of radius 0.35 meters. If the bicycle is traveling at a constant speed of 7.8 m/s, at approximately what angular speed are the tires rotating?

Magnet, i need to demonstrate the magnetic properties as a part of my assig...

i need to demonstrate the magnetic properties as a part of my assignment. then how can i do that?

What is the current in the circuit, In the circuit shown below, a potentiom...

In the circuit shown below, a potentiometer is used to vary the current to the lamp. If the only resistance is due to the lamp, what is the current in the circuit?

Determine grating element in specturm, A beam of light of wavelength λ = ...

A beam of light of wavelength λ = 5000Å falling normally on a plane diffraction grating. The 1 st order spectrum is derived in a direction making an angle θ 1 with the norma

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