What is the theoretical barrier height of semiconductor

Assignment Help Electrical Engineering

Reference no: EM13246911

Consider two Si samples; one is p-type doped to 1018/cm3 acceptor atoms and the other one n-type doped to 1015/cm3 donor atoms at room temperature (300K).
a. Draw the band diagram associated with p-type and n-type semiconductors, noting the various important energy levels
b. Articulate the difference, using band diagrams, between forward and reversed biased junctions.
c. Now, consider a Schottky junction diode between Al and n-Si, doped with 5 × 1016 donors cm?3. Given that the electron affinity ? of Si is 4.01 eV and the work function of Al is 4.28 eV, what is the theoretical barrier height ?B from the metal to the semiconductor?

Reference no: EM13246911

Questions Cloud

Describe electrophilic aromatic substitution : In electrophilic aromatic substitution, why does an amide group direct substitution to a position opposite to it on the aromatic ring. The N donates electron density to the ring by induction and destabilizes the intermediate that forms meta to it

Determine the angular speed : An old-fashioned vinyl record rotates on a turntable at 49rpm . What are the angular speed in rad/s and the period of the motion

Total probability and bayes formulae : Find the probability that the system is operational during the time period and what is the probability that component E3 had been operational?

Define what is the concentration ratio of co2 : What is the concentration ratio of CO2 (usually written as H2CO3) to HCO3- in blood at pH = 7.40. (carbonic acid Ka1 = 4.3 x 10-7)

What is the theoretical barrier height of semiconductor : Consider two Si samples; one is p-type doped to 1018/cm3 acceptor atoms and the other one n-type doped to 1015/cm3 donor atoms at room temperature (300K). a. Draw the band diagram associated with p-type and n-type semiconductors, noting the various..

Compute the mass of sodium acetate : Calculate the mass of sodium acetate that must be added to 500.0 mL of 0.200 M acetic acid to form a pH = 5.00 buffer solution.

Calculate the energies of three lowest states of positronium : A positron is an antimatter particle identical in mass to an electron but with a positive charge, Calculate the energies of the three lowest states of positronium

What is the total distance moved by the ball : A ball is thrown vertically upwards from a point 1.5 m above the ground, with an initial velocity of 30 m/s. In this problem, neglect the effects of air on the motion of theball, and take g = 10 m/s2. what is the total distance moved by the ball

Explain methanol is burned in a bond calorimeter with a heat : 1.925 g of methanol is burned in a bond calorimeter with a heat capacity of 10.4 kj/c .how much heat is given off in kj/g if the temperature increase 4.19 c

User Account

All Pages