Questions tagged [semiconductor]
The semiconductor tag has no usage guidance.
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Effect of carrier concentration on electrical conductivity
As per my understanding, the electrical conductivity of a material can be expected to increase with the increased carrier concentration. However, beyond a certain (extreme) point, the electrical ...
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Optimal Manufacturing Process for a Device [closed]
I am designing a device that has tiny etched gratings (shown in red) in the silicon substrate, with various structures on either side of it (shown in green). I am wondering what the ideal way would be ...
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Cohesive Energy of a metal oxide
I am trying to calculate the cohesive energy of certain metal oxides. However, I am only able to find a formula that is applicable to systems with a single element (say $\ce{Cu}$ metal or $\ce{Si}$ ...
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What does it mean if the Fermi level crosses into the valence band? How about into the conduction band?
Just recently got into DFT and I've been doing a few calculations on my own on Quantum Espresso. I've come up with electronic band structures for materials that I've been looking at and I was hoping ...
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How would surface state affect the band gap value of semiconductors? [closed]
I am struggling to figure out the relationship between bandgap value and surface states. To my understanding, when considering the material that includes surface, there would be some surface states in ...
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Fermi energy lower than valence band maximum?
I am trying to analyze the density of electronic states of a $\ce{TiO2}$ slab, but the result I got from VASP shows the fermi energy is lower than the valence band maximum (VBM) by a small energy ...
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Validity of estimating electron relaxation time using the smallest cross section of a structure [closed]
I am studying nano-scale constrictions in semiconductor materials. Imagine two nano-particles joined together by a single point of crystalline contact to look like an hour-glass filled with sand. ...
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