Kebbab Zoubir

14 Questions 13 Answers 0 Followers

Questions related from Kebbab Zoubir

What is the best method for tracking the sun position, is-it by solar position calculation along the day of the year or by other method?

In solar energy application, often we should know the sun position at each instant. With the sun position calculation, I think we can establish a database for this purpose. Then we can use-it for...

03 January 2015 3,460 11 View

Can we predict barrier potential in a contact metal-semiconductor or semiconductor-semiconductor using a theoretical approach ?

From band structure obtained with an existing calculation method , can we reach the result relating to the contact barrier between two materials ?

16 December 2014 2,068 12 View

Which kind of process is commonly used for manufacturing a one dimensional photonic crystal?

The desired process must be easy to set up and economical.

17 January 2014 3,237 6 View

Can one determine the potential barrier in semiconductor-semiconductor contact using a calculated band structure for each material?

The band structure is easy to determine using ab-initio calculation (e.g Wien2k code). How can we determine the potential barrier obtained by the given materials from the band structure of each...

26 December 2013 3,766 5 View

Which semiconductor should be present in terms of physical properties in order to use it in solar cell applications?

What are the most interesting properties of semiconductors (gap, etc.), which allows us their utilization in solar cells?

31 August 2013 3,602 6 View

How to retrieve the initial color of a given (black and white) picture?

In some applications, the obtained images are still not colored. Seeking way to retrieve the initial color.

31 August 2013 5,864 2 View

Is there any difference between optical and electrical conductivity? If yes, how can one explain this difference physically?

The same question can be asked also in the case of electrical gap and optical gap.

30 July 2013 7,336 19 View

Can anyone explain the SILAR process principle and what kind of material we can obtain?

This question is asked in order to manufacture thin solid film on a glass substrate. I wish also to have responses on the principal precursors used in this technique.

28 June 2013 3,631 5 View

Generally, transfer matrix or Abèles matrix are used for multilayer thin films. Can we use these approaches also for a finite substrate?

The substrate which supports the multilayer thin films is generally considered as infinity. In reality, any substrate is finite. It is also thick versus the thin films.

17 April 2013 5,650 2 View

From DOS (density of state) calculation, can we determine the type (n or p) of the studied semiconductor?

Density of state or band structure energy can be obtained using any theoretical approach, for example DFT. So, from these results, is it possible to determine the type (n or p) of a given...

05 April 2013 2,598 19 View

Is there any free and satisfactory FDTD software ?

Of course, we would use it for our simulation applications.

05 April 2013 1,103 2 View

DSSC - can it work successfully with solid electrolyte? If yes, what solid electrolyte can be used?

The most used electrolyte in DSSC applications is liquid. I think that solid electrolyte is more suitable for manufacturing of this kind of solar cells.

03 April 2013 493 3 View

Which polymers can be used as conductive and transparent material?

I need any polymer that can be used as transparent electrode.

31 March 2013 5,709 2 View

What is the best model which can give us the optical constants of composite material using those of the constituent materials?

The composite is made from two or more constituent materials. If we know the optical constants of origin materials, is it possible to determine those of the composite ?

18 March 2013 7,802 2 View