When the electrons in silicon are excited by visible light and jump

In summary, when a photon of visible light strikes a silicon atom, it transfers its energy to one of the electrons, causing it to jump to a higher energy level. Eventually, the electrons will return to their original level, releasing the gained energy in the form of light or heat. This process is known as the photoelectric effect. Silicon is commonly used in electronic devices due to its semiconductor properties and abundance. Additionally, electrons in silicon can be excited by other forms of energy and different wavelengths of light.
  • #1
MotoPayton
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When the electrons in silicon are excited by visible light and jump into the conduction band how do the electrons replace?

So for example, wouldn't a solar cell only last for so long if all the valence electrons are excited and converted into current. I am looking at it as if all the valence electrons will be excited and all will be left are the core electrons??

I hope that is clear

-Chemistry student
 
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  • #2


Close the circuit.

It a way it is not much different from electrochemical batteries.
 

1. How do electrons in silicon become excited by visible light?

When a photon of visible light strikes a silicon atom, it transfers its energy to one of the electrons in the outermost shell of the atom. This extra energy causes the electron to jump to a higher energy level, or orbital, within the atom, making it excited.

2. What happens to the electrons after they are excited by visible light?

Once the electrons are excited, they become unstable and will eventually return to their original energy level. As they do so, they release the energy they gained from the photon in the form of light or heat.

3. What causes the electrons to jump when they are excited?

When an electron absorbs energy from a photon of light, it gains enough energy to overcome the attractive forces of the nucleus and jump to a higher energy level. This is known as the photoelectric effect.

4. Why is silicon commonly used in electronic devices?

Silicon is commonly used in electronic devices because it is a semiconductor, meaning that it can conduct electricity under certain conditions. It is also abundant, inexpensive, and can be easily manipulated to create electronic components.

5. Can electrons in silicon be excited by other forms of energy besides visible light?

Yes, electrons in silicon can be excited by other forms of energy, such as heat or electrical current. They can also be excited by photons of light with different wavelengths, such as infrared or ultraviolet light.

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