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Questions related from Kebbab Zoubir
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...
01 January 2015 7,331 12 View
When the PV solar cell is used in a multi layer form, the goal is to benefit of a large interval of solar radiations. I think that the gap and the contact of different layers must have certain...
01 January 2015 3,650 4 View
There are much old films which are colored later. The obtained result seems to be satisfactory. The colors can be different from the originals but it is sufficient for mistaking the human eyes....
12 December 2014 8,606 1 View
Among the parameters which decrease the efficiency of the photovoltaic solar cells, we can note the solar IR radiations. This kind of radiation increases the temperature and then disturbs often...
12 December 2014 511 17 View
Optical constants as well as the gap, represent the signing of a material. They must be specific for this material. However, optical constants depend of the size of the crystallites which form the...
12 December 2014 5,799 3 View
From band structure obtained with an existing calculation method , can we reach the result relating to the contact barrier between two materials ?
12 December 2014 5,551 13 View
Is it possible to obtain a phonon energy of about 425 meV, or is it an indirect transition assisted with more than one phonon?
12 December 2014 6,326 1 View
Until today, a good colored image is obtained using exclusively light. Electron microscope uses electrons and echograph uses ultrason. That gives only gray images.
11 November 2014 7,825 11 View
We can take the case of WO3 or CdTe as example
09 September 2014 9,267 2 View
Especially to target the WO3 oxide.
03 March 2014 2,903 2 View
Because of the gap of each material represents a signature of this material, why is it not the case for a quantum dot made with the given material.
02 February 2014 8,445 3 View
The desired software must be similar if possible to the commercial code entitled : Phonon.
02 February 2014 9,433 2 View
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...
12 December 2013 6,005 6 View
Please, give me some example for obtaining semiconductors compound (CdTe, PbS, ZnO, etc.)
12 December 2013 6,075 1 View
In the scientific literature, we can read many dispersion functions which are suitable for a certain type of thin film (Cauchy, Sellmeier, Lorentz, Drude...). My goal is how to describe the...
09 September 2013 8,155 2 View
How to resolve the existence of microclimates in the country subject of these calculations? Is there any model for this kind of problems ?
08 August 2013 6,597 5 View
What are the most interesting properties of semiconductors (gap, etc.), which allows us their utilization in solar cells?
08 August 2013 526 7 View
The same question can be asked also in the case of electrical gap and optical gap.
07 July 2013 4,879 18 View
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.
06 June 2013 8,183 5 View
The cauchy integral should be performed from zero to infinity. The measured interval is limited. How to complete the interval related to cauchy integral?
05 May 2013 2,300 6 View
Is there any method for doing this previous work.
04 April 2013 4,038 4 View
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.
04 April 2013 6,993 3 View
What physical properties should have the material in order to replace TiO2 in the DSSC applications?
04 April 2013 2,505 7 View
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...
04 April 2013 4,066 21 View
Particularly in the determination of LUMO HOMO for dyes or similar products.
04 April 2013 2,024 8 View
It is well known that light is an electromagnetic wave. Because of this, it presents two fields: (electric and magnetic) perpendiculars. therefore, if we act on one field the other should follow....
04 April 2013 5,302 24 View
Of course, we would use it for our simulation applications.
04 April 2013 9,117 2 View
I need any polymer that can be used as transparent electrode.
03 March 2013 2,606 4 View
Formulae which match with local weather.
03 March 2013 3,109 3 View
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 ?
03 March 2013 4,563 3 View
The optical constants should signify a specificity for the material. That should not vary when the form (bulk thin film) of the sample varies.
03 March 2013 2,505 3 View
Spectroscopy of thin films
03 March 2013 3,983 19 View
