Nabil Khelifati

4 Questions 16 Answers 0 Followers

Questions related from Nabil Khelifati

What is the detection limit of ED-XRF technique for transition metals in silicon ?

Hi everybody, please, can someone tell us if the transition metals (W, Fe, Ni, etc ...) in silicon destined for solar cell manufacturing can be detected by ED-XRF technique. Note that the...

19 February 2021 6,443 4 View

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...

24 November 2018 4,488 10 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 3,009 3 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 8,467 3 View