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Junction Capacitance of Photodiode Formula

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Junction Capacitance is the capacitance associated with the depletion region of a semiconductor device, like a diode or transistor. Check FAQs

C j = ε r \cdot \frac{A j}{w}

C_j - Junction Capacitance?ε_r - Permittivity of Semiconductor?A_j - Junction Area?w - Depletion Layer Width?

Junction Capacitance of Photodiode Example

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Here is how the Junction Capacitance of Photodiode equation looks like with Values.

Here is how the Junction Capacitance of Photodiode equation looks like with Units.

Here is how the Junction Capacitance of Photodiode equation looks like.

11.18 = 11.7 \cdot \frac{8.6}{9}

11.18F = 11.7F/m \cdot \frac{8.6m²}{9m}

11.18 = 11.7 \cdot \frac{8.6}{9}

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Junction Capacitance of Photodiode Solution

Follow our step by step solution on how to calculate Junction Capacitance of Photodiode?

FIRST Step Consider the formula

C j = ε r \cdot \frac{A j}{w}

Next Step Substitute values of Variables

∴

C j = 11.7F/m \cdot \frac{8.6m²}{9m}

Next Step Prepare to Evaluate

∴

C j = 11.7 \cdot \frac{8.6}{9}

LAST Step Evaluate

∴

C j = 11.18F

Junction Capacitance of Photodiode Formula Elements

Variables

Junction Capacitance

Junction Capacitance is the capacitance associated with the depletion region of a semiconductor device, like a diode or transistor.

Symbol: C_j

Measurement: CapacitanceUnit: F

Note: Value should be greater than 0.

Formulas to find Junction Capacitance

Permittivity of Semiconductor

Permittivity of Semiconductor refers to it's ability to permit electric field. It is a material property that characterizes how the semiconductor responds to an electric field.

Symbol: ε_r

Measurement: PermittivityUnit: F/m

Note: Value should be greater than 0.

Formulas to find Permittivity of Semiconductor

Junction Area

Junction Area is the cross-sectional area of the depletion region, usually perpendicular to the direction of current flow.

Symbol: A_j

Measurement: AreaUnit: m²

Note: Value should be greater than 0.

Formulas to find Junction Area

Depletion Layer Width

The depletion Layer Width is the distance across the region near the p-n junction where mobile charge carriers (electrons and holes) have been significantly depleted or removed.

Symbol: w

Measurement: LengthUnit: m

Note: Value should be greater than 0.

Formulas to find Depletion Layer Width

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How to Evaluate Junction Capacitance of Photodiode?

Junction Capacitance of Photodiode evaluator uses Junction Capacitance = Permittivity of Semiconductor*Junction Area/Depletion Layer Width to evaluate the Junction Capacitance, The Junction Capacitance of Photodiode is the measure of the ability of a semiconductor device's junction, such as a diode or transistor, to store electrical charge. It arises from the depletion region formed within the semiconductor due to the difference in charge carrier concentrations on either side of the junction. Junction Capacitance is denoted by C_j symbol.

How to evaluate Junction Capacitance of Photodiode using this online evaluator? To use this online evaluator for Junction Capacitance of Photodiode, enter Permittivity of Semiconductor (ε_r), Junction Area (A_j) & Depletion Layer Width (w) and hit the calculate button.

FAQs on Junction Capacitance of Photodiode

What is the formula to find Junction Capacitance of Photodiode?

The formula of Junction Capacitance of Photodiode is expressed as Junction Capacitance = Permittivity of Semiconductor*Junction Area/Depletion Layer Width. Here is an example- 11.18 = 11.7*8.6/9.

How to calculate Junction Capacitance of Photodiode?

With Permittivity of Semiconductor (ε_r), Junction Area (A_j) & Depletion Layer Width (w) we can find Junction Capacitance of Photodiode using the formula - Junction Capacitance = Permittivity of Semiconductor*Junction Area/Depletion Layer Width.

Can the Junction Capacitance of Photodiode be negative?

No, the Junction Capacitance of Photodiode, measured in Capacitance cannot be negative.

Which unit is used to measure Junction Capacitance of Photodiode?

Junction Capacitance of Photodiode is usually measured using the Farad[F] for Capacitance. Kilofarad[F], Millifarad[F], Microfarad[F] are the few other units in which Junction Capacitance of Photodiode can be measured.

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Junction Capacitance of Photodiode Formula

Junction Capacitance of Photodiode Example

Junction Capacitance of Photodiode Solution

Junction Capacitance of Photodiode Formula Elements

Other formulas in C V Actions of Optics Transmission category

How to Evaluate Junction Capacitance of Photodiode?

FAQs on Junction Capacitance of Photodiode

Variable Name