Delat energy required to excite hole from lowest energy orbit to valence band?

In summary, delta energy refers to the energy difference between the lowest energy orbit and the valence band. It is calculated by taking the difference between the energy of the lowest energy orbit and the energy of the valence band. Exciting a hole from the lowest energy orbit to the valence band is important in understanding a material's electronic properties, and the delta energy affects the behavior of electrons and holes in a material. The delta energy can be manipulated or controlled by altering the material's properties, such as through doping.
  • #1
philip041
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Delta energy required to excite hole from lowest energy orbit to valence band?

I have calculated the orbit of a hole in its lowest energy orbit, but am struggling to work out \delta\epsilon (energy needed to excite it to valence band).

Any help much appreciated.
 
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  • #2
"the orbit of a hole in its lowest energy orbit"

what do you mean by that?

1) Holes are just a conceptual construct that help us do the math easier. Holes do not exist.

2) What do you mean by the orbits?
 
  • #3


I can provide some insights into the concept of exciting a hole from its lowest energy orbit to the valence band. First, it is important to understand that a hole in the valence band is essentially an absence of an electron in that energy level. Therefore, to excite a hole to the valence band, we need to provide enough energy to overcome the energy barrier that keeps the electrons in the valence band.

The energy required to excite a hole from its lowest energy orbit to the valence band can be calculated using the principles of quantum mechanics. It is essentially the difference in energy between the two energy levels. This energy difference, denoted as \Delta\epsilon, can be determined by considering the energy levels of the system and the energy states of the particles involved.

Furthermore, the specific value of \Delta\epsilon will depend on the material and its electronic band structure. In some materials, the valence band may be close to the hole's lowest energy orbit, requiring less energy to excite the hole. In others, the valence band may be further away, requiring more energy.

In conclusion, to calculate the \Delta\epsilon required to excite a hole from its lowest energy orbit to the valence band, we need to consider the energy levels and band structure of the material. I hope this helps in your calculation and understanding of this concept.
 

1. What is the concept of "Delta energy" in this context?

Delta energy refers to the energy difference between the lowest energy orbit and the valence band. It represents the amount of energy required to excite a hole from the lowest energy orbit to the valence band.

2. How is the delta energy calculated?

The delta energy can be calculated by taking the difference between the energy of the lowest energy orbit and the energy of the valence band. This can be determined through various experimental techniques such as spectroscopy.

3. What is the significance of exciting a hole from the lowest energy orbit to the valence band?

Exciting a hole from the lowest energy orbit to the valence band is an important process in understanding the electronic properties of a material. It can provide insight into the band gap, which is a crucial factor in determining a material's conductivity and other properties.

4. How does the delta energy affect the behavior of electrons and holes in a material?

The delta energy plays a crucial role in determining the energy levels and movement of electrons and holes in a material. A higher delta energy indicates a larger band gap, which means that it requires more energy for an electron or hole to move from one energy level to another. This can impact the material's conductivity and other properties.

5. Can the delta energy be manipulated or controlled?

Yes, the delta energy can be manipulated or controlled by altering the material's properties, such as its composition and structure. This can be achieved through techniques such as doping, which involves introducing impurities to the material to change its electrical properties and, consequently, the delta energy.

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