Questions tagged [semiconductors]
Most generally a class of materials that are neither insulators or conductors in their natural state, but which can be manipulated via doping or electric fields to change their conduction state. Silicon, Germanium, and GaAs are some usual materials. The term is also used to speak about devices that are made from such materials, for example, a processor from Intel can be called a semiconductor.
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How does a floating diffusion node store and clear charges?
I'm currently studying CCD sensors. This article below attempts to explain how electrons are collected into a floating diffusion node, and then cleared when a reset voltage is applied to it. I don't ...
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Effect of semiconductor doping on threshold voltage
After reading online, I have modeled this as an relation between the threshold voltage and the doping concentration:
For a N-channel MOSFET on a P-type substrate:
$$
V_{T,N} \propto \sqrt{N_{A}}
$$
...
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How electrical current works in intrinsic semi-conductors
I understand that there are two types of currents going on when voltage source is applied in pure semi-conductor material - electron current and hole current. What I'm trying to do is imagine it.. So ...
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Semiconductor PN Polarity
When you apply voltage to the PN semiconductor and you achieve equilibrium, why is the N side still negative (-) and P side still positive (+) when considering that all of the ions have 4 valence ...
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Minority carriers in P-N junction
Are the minority carriers (free electrons in p-type and holes in n-type) created after the doping of silicon or after the n or p side get voltage across from a power supply?
And my second question is ...
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Is it possible to determine the Miller voltage of a MOSFET from the ON-region characteristics?
Miller's voltage from \$I_{ds}\$ vs \$V_{ds}\$ characteristics for different values of gate-source voltages. Miller's voltage or Miller plateau is the critical gate-source voltage at which MOSFET ...
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What is the Fermi level away from the p-n junction?
I understand that the Fermi level at the p-n junction must be the same between the materials forming the junction. To achieve this, the band energies of the n- and p-type materials are bent.
However, ...
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How to measure the electrical properties to ensure the performance of a thin electrode/insulator stack-up?
I am a mechanical engineer by trade, and I am looking at some basic electrical properties that I need to measure to ensure the device meets the desired performance.
The device consists of a two-layer ...
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Coupling heatsink RC network to MOSFET's Cauer circuit
I am trying to understand simple RC thermal simulation to analyse the temperature rise in Rohm a 1200 V N-channel SiC MOSFET SCT3040KR.
RC Cauer parameters are as depicted in the LTspice circuit ...
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How are Analog Chips produced?
I am curious about how analog chips are produced. I know that the most advanced logic are made with many rounds of deposition, etching, lithography, etc, but I haven't seen much material about how ...
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Seebeck Voltage [closed]
I understand that the voltage of two metal elements is V=(Sb-Sa)(T2-T1) regarding a thermocouple. But, what if mass was introduced to find the voltage? Can mass also be used to find voltage with ...
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Generating Double pulse using Tektronics Function generator AFG31000
I have Tektronics AFG 31000 function genertor with built in double pulse test app. I want to generate two pulses for my double pulse test but this so simple task is becoming a mountain to climb for me....
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Why do wide band gap semiconductors allow for higher electron mobilities?
Other than increased energy handling capabilities, one of the main advantages of using wide band-gap semiconductors like SiC or GaN in power electronics applications is that the switching frequency ...
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What exactly happens at the fundamental level if base voltage is higher than collector voltage in CE transistor?
In the first answer to this question, it is stated that:
This happens even if the base and collector are at the same voltage (!). Basically, one way to model a transistor is as the base-emitter diode,...
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How do you make M2 Ultra with lithography?
The M2 Ultra chip is unusual not because it's a single chip made of two halves, but because the halves are centrosymmetric images of each other instead of translation. Assuming the wafer is exposed ...
