A semiconductor has an intrinsic charge carrier density of 1×1014cm3 ,a charge carrier lifetime of 10us,...

A semiconductor has an intrinsic charge carrier density of 1×10¹⁴cm3 ,a charge carrier lifetime of 10us, an electron diffusion coefficient of 36 cm²/s, and a hole diffusion coefficient of 12cm²/s. It is at a temperature of 450K and is illuminated by a laser beam at an optical generation rate of 10¹⁹ electron‐hole‐pairs/(cm³∙s) What is the separation between the electron and hole quasi‐Fermi levels? Show these quasi‐Fermi levels on a rough sketch of the energy band diagram with the intrinsic, conduction band, and valence band energy levels. What is the change in the semiconductor's conductivity due to the illumination?

Expert Solution

Manojponduru answered 3 months ago

What is intrinsic semiconductor? What is a carrier? What types of carriers does silicon have?

What is intrinsic semiconductor? What is a carrier? What types of carriers does silicon have? What is free electron? What is a hole? Why can the hole conduct current?

Intrinsic carrier density of Ge is 1.7x1019 /m3 . It is doped with a pentavalent impurity...

Intrinsic carrier density of Ge is 1.7x1019 /m3 . It is doped with a pentavalent impurity of 1ppm. Assuming all impurity atoms are ionized, calculate the factor by which the majority concentration is more than the intrinsic carrier concentration.

What is the Fermi energy in terms of the charge carrier density, for graphene?

Choose the correct definition for an intrinsic semiconductor with an example. 1. a conductive material of...

Choose the correct definition for an intrinsic semiconductor with an example. 1. a conductive material of an element with the addition of dopant (0.0001% Si in Al ) 2. a conductive material of an element with the addition of dopant (0.0001% Al in Si ) 3. a material that naturally can have electrons move across the band gap ( Al ) 4. a material that naturally can have electrons move across the band gap (pure silicon) Choose the correct definition...

Define/explain intrinsic semiconductor. What are its characteristics

Proof the equation of number of holes in VB at intrinsic Semiconductor

describe energy band structure and Fermi distribution function of intrinsic semiconductor, n-type semiconductor and p-type semiconductor.

The lifetime of a semiconductor laser is normally distributed with a mean of 7000 hours and...

The lifetime of a semiconductor laser is normally distributed with a mean of 7000 hours and a standard deviation of 600 hours. A product contains three lasers, and the product fails if any of the laser fails. Assuming that the lasers fail independently, would the product lifetime exceed 10,000 hours of use before failure with a probability of 99%. If not, recommend a n alternative lifetime distribution for the lasers.

The total current density in a semiconductor is given as constant and Jtop = -20 A...

The total current density in a semiconductor is given as constant and Jtop = -20 A / cm ^ 2. Total current density is the sum of the hole drift current density and the electron diffusion current densities. The hole density in the crystal is constant and p = 0.64 * 10 ^ 10 cm ^ -3. Electron density (to be written in x distance micrometer) is given as n (x) = 2 * 10 ^ 15 * e ^...

The total current density in a semiconductor is given as constant and Jtop = -20 A...

The total current density in a semiconductor is given as constant and Jtop = -20 A / cm ^ 2. Total current density is the sum of the hole drift current density and the electron diffusion current densities. The hole density in the crystal is constant and p = 0.64 * 10 ^ 10 cm ^ -3. Electron density (to be written in x distance micrometer) is given as n (x) = 2 * 10 ^ 15 * e ^...

Question

A semiconductor has an intrinsic charge carrier density of 1×1014cm3 ,a charge carrier lifetime of 10us,...

Solutions

Expert Solution

Related Solutions

What is intrinsic semiconductor? What is a carrier? What types of carriers does silicon have?

Intrinsic carrier density of Ge is 1.7x1019 /m3 . It is doped with a pentavalent impurity...

What is the Fermi energy in terms of the charge carrier density, for graphene?

Choose the correct definition for an intrinsic semiconductor with an example. 1. a conductive material of...

Define/explain intrinsic semiconductor. What are its characteristics

Proof the equation of number of holes in VB at intrinsic Semiconductor

describe energy band structure and Fermi distribution function of intrinsic semiconductor, n-type semiconductor and p-type semiconductor.

The lifetime of a semiconductor laser is normally distributed with a mean of 7000 hours and...

The total current density in a semiconductor is given as constant and Jtop = -20 A...

The total current density in a semiconductor is given as constant and Jtop = -20 A...