Questions tagged [charge-carrier]
The charge-carrier tag has no usage guidance.
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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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Is it possible to say that entropy would affect the charge transportation?
I noticed there are a few papers from Dr. Karuppuchamy Navamani, for example:
Generalization on Entropy-Ruled Charge and Energy Transport for Organic Solids and Biomolecular Aggregates
Theoretical ...
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Current Inside the Depletion Region Forward Biased PN Junction
For a forward biased PN junction, we assume the hole and electron currents are constant inside the depletion region when there is no generation or recombination in the depletion region (shown from the ...
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About the relationship between Hall coefficient and carrier concentration
I had a question while studying the Hall effect.
After going through various intermediate processes, the Hall coefficient can be derived as follows,
$R_H=\frac{1}{qn},$
where $q$ is the quantity of ...
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Electric Field Far From PN Junction
According to Semiconductor physics and devices Book by Donald A. Neamen book. The electric field far from the space charge region is very small and most of the applied voltage happens across the space ...
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Charge density within a PIN diode
Consider the following problem regarding the p-type -intrinsic - n-type (PIN) diode from the Semiconductor Devices fundementals text book:
According to the solution manual the charge density is given ...
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How is the number of charge carriers related to the conductivity in semiconductors?
Conductometric gas sensors based on metal oxides (such as this one) use the variation of electrical resistance as an indicator of the concentration of the detected gas. In the aforementioned article, $...
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Maxwell's Equations Relativistic Interpretation
I've seen similar questions asking about expressing Maxwell's equations with relativistic formulation, but my question is about the physical interpretation it may give for their conventional form.
I'm ...
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Modeling particles in electric and magnetic fields (software recommendations)
Does anyone know of free software that would allow me to visually model particles moving in electric and magnetic fields, ideally, including magnetic fields extended/altered by ferromagnetic materials?...
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Trajectory of a Charged Particle in a uniform magnetic field in the context of mechanically-enforced sinusoidal motion
I want to find out what would happen to the trajectory of a charged particle, say a proton moving at an angle in a uniform magnetic field if its motion were mechanically altered by a physical barrier.
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What is "free charge" in the macroscopic maxwell equations?
Wikipedia states the macroscopic Gauss' law as $\nabla \cdot \overrightarrow{D} = \rho_f$, where $\rho_f$ is the charge density of free charge carriers.
I understand that conducting electrons in a ...
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Potential difference between two hollow spheres and amount of current flow
If two Hollow Spheres with radius $r_1$ and $r_2$ have charge $q_1$ and $-q_2$ in them respectively(charges are evenly distributed in the surfaces).The spheres are separated by a distance d .Now We ...
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Why doesn't the classical model of electrical conduction work with iron, cadmium and bismuth?
My textbook says this:
In most metals, the charge carriers are electrons and the charge - carrier density determined from Hall - effect measurements is in good agreement with calculated values for ...
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What makes of a current in solidstate/semiconductor physics?
If there is some incoming light that has hit electrons of a N-type doped silicon and broke loose these electrons from their covalent bounds and excited them to the conduction band and also excited the ...
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Using mass-action law to determine doping densities [closed]
I would like to understand the solution to part c) given below:
Find the electron and hole densities in silicon at $300$ K, for each of the following impurity
densities:
a) Boron atoms at $5 \times ...
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