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...

10 November 2018 8,323 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...

11 December 2016 2,837 12 View

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

04 May 2016 9,416 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 !

11 December 2014 455 0 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 7,937 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 7,945 4 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 9,006 4 View

Why does blocking with my immunogenic peptide cause nuclear fluorescence in ICC?

Hi all, I am validating a polyclonal antibody raised against human ANT4, through WB and ICC. In most of my controls, the antibody shows very little off-target binding, but when I pre-incubate the...

03 March 2021 5,999 3 View

Irradiation data for JAPAN?

Hi, Could you help me to get the latest (2019, 2020) solar resource data for a particular site in JAPAN? PV GIS and NSRDB data are not in reach to JAPAN, I'm looking for some other database for...

03 March 2021 961 3 View

Why are the velocities so high in my Boussinesq approximation Fluent simulation?

Hello, I have a mechanism where air rises due to convective flows. In this simulation, nothing is driving the air except this. I understand that the Boussinesq approximation only works for small...

02 March 2021 4,910 3 View

Does Napabucasin soluble in dichloromethane and in ethanol?

I need to prepare a solution of Napabucasin (inhibitor of cancer cell stemness) in dichloromethane. The drug is expensive, so maybe somebody already tried to do it. If it is soluble, what is the...

02 March 2021 9,945 3 View

Help request in CST microwave?

im working now on TPV solar cells and metamaterials and i realy need our help in CST microwave i have a tpv cell simulation and i want to extract particullarly the absorbtion of only the active...

02 March 2021 2,246 2 View

Anyone found any research papers on solar furnace design calculations (for solar concentration)?

I am thinking about working on solar furnace with heliostats that concentrate sunlight and heat molten salt, but currently no luck with research. Not a lot of papers based on the subject. (check...

01 March 2021 5,023 5 View

How to remove the residual PDMS on the silicon mold?

Incompletely cross-linked pdms are difficult to remove.

01 March 2021 798 3 View

How to size battery banks?

I am designing a small grid connected solar PV power-plant. As the battery's capacity is specified in Ah and demand in kWh. What is the best way to size the battery bank? I have battery price in...

28 February 2021 1,638 3 View

Dapi fluorescence protocol for colon cell lines ?

28 February 2021 2,534 2 View

How to design a boost converter for a mppt controller?

I have a doubt on how to select the inductor and capacitor value when I want to implement MPPT controller. This is because we always take a maximum output voltage and current but in this case, we...

28 February 2021 3,637 2 View