Question

determine the saturation current in a p-n junction diode at 256k if a voltage of 0.0678 produces a positive current of 36.6 MA​

Answer 1

Answer:

this is the answer friend

Explanation:

A p-n junction is an interface or a boundary between two semiconductor material types, namely the p-type and the n-type, inside a semiconductor.For more information Explore

Answer 2

Answer:

The saturation current in a p-n junction diode is 1.8 mA.

Explanation:

Given,

Temperature (T) = 256 K

Voltage (V) = 0.0678 Volts

Current (I) = 36.6 mA = 36.6 × 10⁻³ A

To find,

The saturation current or the reverse saturation current (I₀)

Concept,

In a p-n junction the current 'I' can be written as $I = I_o(e^{\frac{eV}{kT} }-1)$

Where I = current through the diode

I₀ = Saturation current or reverse saturation current

e = charge of electron = 1.6 × 10⁻¹⁹ C

V = voltage across the diode

k = Boltzmann's constant = 1.4 × 10⁻²³ m² kg s⁻² K⁻¹

T = absolute temperature.

Calculation,

As

$I = I_o(e^{\frac{eV}{kT} }-1)$

$\implies I_o = \frac{I}{(e^{\frac{eV}{kT} }-1)} \\\implies I_o = \frac{36.6 \times10^{-3}A}{e^\frac{1.6\times 10^{-19}\times 0.0678 V}{1.4 \times 10^{-23}\times256 K}-1 }$

⇒ I₀ = 0.0018 A = 1.8 mA

Therefore, the saturation current in a p-n junction diode is 1.8 mA.

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