Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Consider a pentavalent impurity such as phosphorus (P, Z = 15) is doped in a pure semiconductor germanium (Ge, Z = 320. Each phosphorus atom forms four covalent bonds with four germanium atoms as shown in the figure. Thus fifth electron does not take part in the formation of covalent bonds. Hence it is free. This means the phosphorus atom has an excess of one electron and is ready to donate. Therefore all such pentavalent impurities are called ‘donors'. Thus, a small quantity of phosphorus provides millions of electrons in a n-type semiconductor which are excess in number compared to number of holes available for conduction. The resulting semiconductor is called a n-type semiconductor.
A n-type semiconductor is formed when a small quantity of donor impurity is added to a pure semiconductor. In a n-type semiconductor, conduction is mainly by means of electrons in the conduction band. Electrons are majority carriers and holes are minority carriers in a n-type semiconductor.
Amplitude: The maximum displacement of a body on either side of the mean position during simple harmonic motion is known as amplitude and it is shown by x.
For a reversible process involving ideal gases in a closed system, show that ΔS = C v ln(T 2 /T 1 ) for a constant volume process ΔS = C p ln(T 2 /T 1 ) for a constant pres
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
Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4
how to create a graph on the acceleration due to gravity on a pendulum
Interference of waves: When two waves of similar amplitude and period traveling in the similar medium superpose, they reinforce each other at one point and cancel at others. Th
A child starts to build a house of cards by laying an 8.5-cm-long playing card with a mass of 0.75 g across two other playing cards: support card A and support card B. If suppor
Phase in sinusoidal functions or in waves has two different, but closely related, meanings. One is the initial angle of a sinusoidal function at its origin and is sometimes called
determine the pressure of a 20 lb force applied to an area of 10 inch squared
A transparent glass cube, of side 20 cm has a small air bubble. When it is viewed normally from the nearest face it seems to be at 0.05 cm from that face and when it viewed throug
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!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd