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?

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Manojponduru answered 4 months ago

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

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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 ^...

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

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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...

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