Semiconductor

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What is the best way to calculate electrical conductivity of semiconductors and the same system with a layer of oxide using Quantum Espresso?

I have tried BoltzTrap, and EPW but I'm not sure whether Boltzmann Transport Equation is a right approach for a complex system (semi cond. + an Oxide layer or even the semiconductor itself). Also...

12 January 2021 4,883 4 View

How to calculate the HOMO LUMO bandgap from cyclic voltammogram (CV) performed in aqueous medium?

In my case I have performed the CV of electrodeposited methylene blue in glassy carbon electrode in 0.1 M phosphate buffer solution. It is possible to calculate HOMO-LUMO bandgap with in this system?

12 January 2021 6,427 4 View

How to calculate the band potential of a semiconductor material using energy band gap?

I am looking for methods to calculate the band potential of ZnFe2O4 and Fe2O3.

06 January 2021 6,727 2 View

What is the physical significance of series resistance of a Schottky diode?

Is series resistance a parasitic parameter of the resistance of the semiconductor in a metal-semiconductor contact? Device physics

05 January 2021 5,732 3 View

Is grain boundary scattering 'always' dominant over surface scattering in grained metal/semiconductor thin films?

Hi all, I was wondering if there is some theoretical insight in the relative contribution to the resistivity of grained thin metal or semiconductor films coming from bulk grain boundary...

19 December 2020 3,085 3 View

Please Guide me on this how to solve this issue ?

I have submitted a paper in a journal and the reviewers reply to me with this. Can anyone guide me on this how to solve it Thanks in advance Figure 4: (i) the image presented in panel (a) shows...

16 December 2020 769 6 View

Degenerated semiconductor (Burstein Moss effect) with unchanged band-gap?

Is it possible to produce a degenerate semiconductor using a dopant agent that results in increasing the electrical conductivity, but the optical band-gap remains unchanged? In such a situation...

12 December 2020 8,545 13 View

What is the influence of reduced graphene oxide (rGO) in a p-n ternary photocatalyst?

Hello, I was interested in knowing whether using rGO as the charge mediator between a p-type semiconductor and an n-type semiconductor (in a ternary composite, for example g-CN/rGO/α-Fe2O3) would...

05 December 2020 9,200 2 View

How can I calculate flat band with valence band and conduction band potential for P-type semiconductor from negative slop Mott-Schottky plot?

I have a lot of journals regarding finding out VB and CB for n-type semiconductors from Mott-Schottky plots where MS slope is positive but I cont able to find out VB and CB for p-type...

02 December 2020 6,527 1 View

How can I calculate valence band maxima of a semiconductor using XPS?

I just need to calculate the valence band maxima for a semiconductor which is actually in a heterojunction with another semiconductor. The motivation is to find the exact energy level of VB and CB...

02 December 2020 4,208 7 View

Effective masses of GaAs-lattice-matched InGaAsP, using k.p method or else?

Dear community, For numerical simulations, I need the effective masses of electrons, light & heavy holes, and split-off carriers, in GaAs-lm InGaAsP. Alternatively, I am considering using...

30 November 2020 6,079 3 View

I would like to know how to add a metallic layer (introduce these parameters) between semiconductor layers in the AMPS-1D software ?

how to enter the parameters of a metal layer in the AMPS-1D software

20 November 2020 3,932 1 View

How to reduce pH of a liquid solution?

Hello, Everyone! I am working on TiO2 composites and our prepared materials solution has a pH of 13 which is totally basic, and the process of pH value decrement is too slow could any please...

12 November 2020 7,677 10 View

Electric field inside a biased N-type uniformly doped semiconductor?

What does the profile of electric field look like in a uniformly doped N-type semiconductor when an external voltage of 'V' volt is applied? Please provide any reference material if possible.

07 November 2020 2,165 8 View

Is linear E-k dispersion relationship possible in semiconductor?

Linear means E increases linearly from k>0 & k

05 October 2020 4,616 3 View

Is there any reason for electrical conductivity of semiconductor to increase with passage of time?

I am observing an increase in electrical conductivity of my semiconducting material with time, i.e I had tested my samples and initially it gave some value and when I retested the same sample with...

05 October 2020 8,607 4 View

In most of perovskite solar cell SCAPS simulation, Why does the value of donar density used to keep zero?

Perovskite is an Intrinsic semiconductor which comprised equal no.of hole and electrons concestration under thermal equilibrium condition. However in most of the perovskite solar cell SCAPS...

01 October 2020 1,156 5 View

Looking for shelf life data on CH3I?

Looking for data on CH3I shelf life data for a semiconductor grade product 99.5% purity

25 September 2020 8,340 1 View

What should be the minimum and maximum dopant concentration to achieve best photocatalytic activity of any semiconductor?

I am working on modifying the band structure of TiO2 semiconductor for visible light photocatalytic activity. For this reason, I would like to dope the metal and/or nonmetal ions into the TiO2 to...

24 September 2020 1,259 6 View

Could anybody tell me what is the electronic affinity and charge carrier mobility of the ZnSSe semiconductor?

ZnS+ZnSe = ZnSSe alloy, or Even methods of how to calculate these parameters are welcomed.

24 September 2020 5,150 3 View

Asked a question in ZnO ?

I am looking to improve conductivity or transmittance by co-doping ZnO with Sn and? I did a little research following the literature but I did not find the best co_doping of ZnO by Sn with other...

22 September 2020 2,295 6 View

Why I can not see the peaks of drug dissolved in the polymer film with FTIR?

I have prepared PLGA films once without drug, the other with 5% of Diclofenac Sodium, by dissolving the Drug in the ethyl acetate solvent and casting the film. For the both films I got the same...

16 September 2020 8,304 4 View

What is the difference between p-n and type-II heterojunctions?

In a p-n heterojunction under internal electric field, the photogenerated electrons and holes will transfer to the n-type semiconductor and the p-type one, respectively. It can be assigned to the...

13 September 2020 6,558 8 View

Asked a question in SnO2 ?

The edge positions of the valence band (VB) and conduction band (CB) of semiconductors at the point of zero charge can be calculated with the following equations : EVB = X–Ee + 0.5 Eg ECB =...

07 September 2020 9,000 2 View

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