Nabil Khelifati

8 Questions 27 Answers 0 Followers

Questions related from Nabil Khelifati

What is the simplest technique used for protecting one side of Si wafer against etching by NaOH or KOH solution?

POCl3 emitter is formed on both side of Si wafer after P-diffusion process. This step yields n+pn+ structure. I would like to know how I can protect the emitter on the front side of wafer, using a...

11 November 2018 8,377 11 View

In which case a SIMS depth profile shows zero concentrations, is this possible?

I performed some SIMS analyzes of 52Cr and 55Mn in c-Si (in profile mode). The sent findings showed zero concentrations. Please, is it possible to get by SIMS a zero signal "zero counts per...

12 December 2016 2,914 12 View

What are the key parts of a photoluminescence (PL) equipment used in the study of defects in silicon ?

I'm looking for a collaboration with specialists in PL spectroscopy field. My email is: [email protected]

05 May 2016 9,460 2 View

Does anyone have reference(s) that show QSSPC carrier lifetime curves with associated surface recombination velocitiy measured by another technique?

The results will be used just for comparison. Thank you !

12 December 2014 498 0 View

Very interesting, is it a new project ?

Dear all, I'm very attracted by your project, especially because it aims the fabrication of PERT bifacial solar cells. So, please, let us know in which context you created it and what is the...

01 January 1970 9,056 4 View

How can we distinguish between solar grade silicon (SoG-Si) and metallurgical grade silicon (MG-Si)?

I have multicrystalline silicon wafers (mc-Si), and I do not know their grade. Is there a simple method that can be used to classify this material? The minority carrier lifetime measurement, is it...

01 January 1970 7,986 4 View

Dear Maria, please, is it a new project ?

I'm working on the control of metals in silicon wafer during solar cells fabrication by using gettering technique.

01 January 1970 3,987 2 View

What are the main aims of your project?

I'm working on the defects control in mc-Si during process fabrication of the solar cell, using in particular gettering technique. So, I find your project interesting. Please Dr Schmidt, could you...

01 January 1970 7,975 4 View