# Questions tagged [semiconductor-physics]

Semiconductor physics is the branch of solid state physics that focuses on specific properties of semiconductors. It studies dynamics of different perturbations (mainly electrons and holes) in the semiconductor crystal and the ways to harness it in electrical circuits.

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### A question related to shift in the Fermi energy [closed]

If the effective mass of holes in a semiconductor is 5 times that of the electron, at what temperature would the Fermi level shift by 15% from the middle of the forbidden energy band? (given that, eg =...
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### How to Properly Discretize Semiconductor Continuity Equations

I am looking to perform numerical modeling of a MOSFET device and am wanting to better understand how to discretize the semiconductor continuity equations. The semiconductor equations consist of the ...
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1 vote
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### Using Jacobi Method for Solving Full Semiconductor Equations

I am looking to perform modeling of a MOSFET device and have therefore been researching computational methods for how to do so. Quite often when solving the Poisson equation, the reader is pointed to ...
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### Solid state devices, hole current [duplicate]

why do we consider hole movement as well as the electron movement in the total current term, the hole movement is the effect of the cause (electron movement), so how can they both contribute total ...
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### Finite Difference Modeling of MOSFET Device

Does anyone know of any references for MOSFET modeling done using the Finite Difference Method that they could point me to? I understand the gist of the operation, namely using Poisson's equation to ...
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1 vote
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### Why does an electron hole have a positive charge in semi-conductors?

From the link below, they explain when an electron in the valence band is promoted to the conduction band it leaves behind an electron hole. But in the case of the image below, we can see when Si is ...
1 vote
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### Is spin relaxation asymmetric in magnetic semiconductors?

I am considering photo-excitation in magnetic semiconductors (e.g. metal organic frameworks). The cartoon picture is like this: where there will be a spin polarization in the conduction band since ...
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### How is the number of charge carriers set free in an x-ray detector proportional to the energy of the incoming photon?

I'm a chemistry undergrad student and I've been doing some research into the ways light is generated and detected at different parts of the spectrum (for the purposes of better understanding practical ...
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### Phonon and the coupling to electrons

I am new to looking at phonons, especially in relation to their use in coupling to electrons. Phonons can be defined as the treatment of vibrations in a crystal lattice. There can be different types/...
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