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Energy Gap Formula

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Energy gap in solid-state physics, an energy gap is an energy range in a solid where no electron states exist. Check FAQs

E g = E c - E v

E_g - Energy Gap?E_c - Conduction Band Energy?E_v - Valence Band Energy?

Energy Gap Example

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With units

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Here is how the Energy Gap equation looks like with Values.

Here is how the Energy Gap equation looks like with Units.

Here is how the Energy Gap equation looks like.

0.198 = 17.5 - 17.302

0.198eV = 17.5eV - 17.302eV

0.198 = 17.5 - 17.302

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Energy Gap Solution

Follow our step by step solution on how to calculate Energy Gap?

FIRST Step Consider the formula

E g = E c - E v

Next Step Substitute values of Variables

∴

E g = 17.5eV - 17.302eV

Next Step Convert Units

∴

E g = 2.8E-18J - 2.8E-18J

Next Step Prepare to Evaluate

∴

E g = 2.8E-18 - 2.8E-18

Next Step Evaluate

∴

E g = 3.17231111340001E-20J

LAST Step Convert to Output's Unit

∴

E g = 0.198eV

Energy Gap Formula Elements

Variables

Energy Gap

Energy gap in solid-state physics, an energy gap is an energy range in a solid where no electron states exist.

Symbol: E_g

Measurement: EnergyUnit: eV

Note: Value should be greater than 0.

Formulas to find Energy Gap

Conduction Band Energy

Conduction Band Energy is the energy band in a material where the electrons are free to move and participate in electrical conduction.

Symbol: E_c

Measurement: EnergyUnit: eV

Note: Value should be greater than 0.

Formulas to find Conduction Band Energy

Valence Band Energy

Valence Band Energy is defined as the highest energy level in the valence band.

Symbol: E_v

Measurement: EnergyUnit: eV

Note: Value should be greater than 0.

Formulas to find Valence Band Energy

Other formulas in Energy Band and Charge Carrier category

Go Valence Band Energy

E v = E c - E g

Go Steady State Electron Concentration

n ss = n 0 + δ n

Go Energy of Electron given Coulomb's Constant

E e = \frac{n^{2} \cdot π^{2} \cdot {[hP]}^{2}}{2 \cdot [Mass-e] \cdot L^{2}}

Go Photoelectron Energy

E photo = [hP] \cdot f

How to Evaluate Energy Gap?

Energy Gap evaluator uses Energy Gap = Conduction Band Energy-Valence Band Energy to evaluate the Energy Gap, The Energy Gap formula is defined as in solid-state physics, an energy gap is an energy range in a solid where no electron states exist, i.e. an energy range where the density of states vanishes. Energy Gap is denoted by E_g symbol.

How to evaluate Energy Gap using this online evaluator? To use this online evaluator for Energy Gap, enter Conduction Band Energy (E_c) & Valence Band Energy (E_v) and hit the calculate button.

FAQs on Energy Gap

What is the formula to find Energy Gap?

The formula of Energy Gap is expressed as Energy Gap = Conduction Band Energy-Valence Band Energy. Here is an example- 1.2E+18 = 2.80381032750001E-18-2.77208721636601E-18.

How to calculate Energy Gap?

With Conduction Band Energy (E_c) & Valence Band Energy (E_v) we can find Energy Gap using the formula - Energy Gap = Conduction Band Energy-Valence Band Energy.

Can the Energy Gap be negative?

No, the Energy Gap, measured in Energy cannot be negative.

Which unit is used to measure Energy Gap?

Energy Gap is usually measured using the Electron-Volt[eV] for Energy. Joule[eV], Kilojoule[eV], Gigajoule[eV] are the few other units in which Energy Gap can be measured.

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Energy Gap Formula

Energy Gap Example

Energy Gap Solution

Energy Gap Formula Elements

Other formulas in Energy Band and Charge Carrier category

How to Evaluate Energy Gap?

FAQs on Energy Gap

Variable Name