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Energy Band Gap Formula

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Energy Band Gap describes the influence of photons on band-gap energy. Check FAQs

E g = E G0 - (T \cdot β k)

E_g - Energy Band Gap?E_G0 - Energy Band Gap at 0K?T - Temperature?β_k - Material Specific Constant?

Energy Band Gap Example

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

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

Here is how the Energy Band Gap equation looks like.

0.7656 = 0.87 - (290 \cdot 5.8E-23)

0.7656eV = 0.87eV - (290K \cdot 5.8E-23J/K)

0.7656 = 0.87 - (290 \cdot 5.8E-23)

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Energy Band Gap Solution

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

FIRST Step Consider the formula

E g = E G0 - (T \cdot β k)

Next Step Substitute values of Variables

∴

E g = 0.87eV - (290K \cdot 5.8E-23J/K)

Next Step Convert Units

∴

E g = 1.4E-19J - (290K \cdot 5.8E-23J/K)

Next Step Prepare to Evaluate

∴

E g = 1.4E-19 - (290 \cdot 5.8E-23)

Next Step Evaluate

∴

E g = 1.22662807710001E-19J

Next Step Convert to Output's Unit

∴

E g = 0.765600694836947eV

LAST Step Rounding Answer

∴

E g = 0.7656eV

Energy Band Gap Formula Elements

Variables

Energy Band Gap

Energy Band Gap describes the influence of photons on band-gap energy.

Symbol: E_g

Measurement: EnergyUnit: eV

Note: Value should be greater than 0.

Formulas to find Energy Band Gap

Energy Band Gap at 0K

Energy Band Gap at 0K describes the influence of photons on band-gap energy at 0K temperature.

Symbol: E_G0

Measurement: EnergyUnit: eV

Note: Value can be positive or negative.

Formulas to find Energy Band Gap at 0K

Temperature

Temperature is the degree or intensity of heat present in a substance or object.

Symbol: T

Measurement: TemperatureUnit: K

Note: Value can be positive or negative.

Formulas to find Temperature

Material Specific Constant

Material Specific Constant is defined as the constant which is determined experimentally and differs from material to material.

Symbol: β_k

Measurement: Heat CapacityUnit: J/K

Note: Value can be positive or negative.

Formulas to find Material Specific Constant

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How to Evaluate Energy Band Gap?

Energy Band Gap evaluator uses Energy Band Gap = Energy Band Gap at 0K-(Temperature*Material Specific Constant) to evaluate the Energy Band Gap, Energy Band Gap describes the energy difference between the highest energy level of the valence band (the band of electrons that participate in chemical bonding) and the lowest energy level of the conduction band (the band of electrons that can move freely and conduct electricity) in a solid material. Energy Band Gap is denoted by E_g symbol.

How to evaluate Energy Band Gap using this online evaluator? To use this online evaluator for Energy Band Gap, enter Energy Band Gap at 0K (E_G0), Temperature (T) & Material Specific Constant (β_k) and hit the calculate button.

FAQs on Energy Band Gap

What is the formula to find Energy Band Gap?

The formula of Energy Band Gap is expressed as Energy Band Gap = Energy Band Gap at 0K-(Temperature*Material Specific Constant). Here is an example- 4.8E+18 = 1.39389427710001E-19-(290*5.7678E-23).

How to calculate Energy Band Gap?

With Energy Band Gap at 0K (E_G0), Temperature (T) & Material Specific Constant (β_k) we can find Energy Band Gap using the formula - Energy Band Gap = Energy Band Gap at 0K-(Temperature*Material Specific Constant).

Can the Energy Band Gap be negative?

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

Which unit is used to measure Energy Band Gap?

Energy Band 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 Band Gap can be measured.

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Energy Band Gap Formula

Energy Band Gap Example

Energy Band Gap Solution

Energy Band Gap Formula Elements

Other formulas in Semiconductor Characteristics category

How to Evaluate Energy Band Gap?

FAQs on Energy Band Gap

Variable Name