Why pyramids are formed at different heights when silicon wafers are etched by alkaline solution and isopropyl alcohol (IPA)?

Trad khodja Abdallah @Trad-Khodja-Abdallah

24 May 2021 1 8K Report

Texturing the surface of silicon wafers for photovoltaic applications using alkaline solutions gives pyramids of different heights . What is the reason for this? and are pyramids of great heights the best or random?

Lyes Benharrat

Dear Abdallah,

I remember I read somewhere that the optimal pyramids' height should turn around 5 micrometers.

Best wishes.

Lyes BENHARRAT.

Badges
Science topic

More Trad khodja Abdallah's questions See All

How can I merge two power regression curves into a single graph in SPSS 25?

I created Bland Altman Plot to assess the difference, But I want to visualize the difference between the two curves in the same graph.

02 July 2024 5,361 0 View

Can we transplanting wheat or corn as we do with rice?

Transplanting, a critical step in crop establishment, involves moving seedlings from a nursery to their final field location. While rice transplanting is a common practice, the feasibility of...

18 March 2024 1,254 4 View

Are there varieties or strains of wheat or corn capable of renewing their roots, as is the case with rice?

While rice has long been celebrated for its remarkable ability to regenerate roots, the same phenomenon in wheat and corn has remained relatively unexplored. Recent genetic research, however,...

18 March 2024 218 0 View

How to identify oxidation and reduction peak from CV graph?

I used 3 electrode potential state to scan the CV for electrochromic properties of metal phosphate. 1. Which peak belong to oxidation and reduction reaction in the system? 2.Is the peak on the...

01 March 2024 8,075 0 View

Any colleague interested in research collaboration and capable of conducting GC-MS?

I have aqueous and methanol (or ethanol or ethyl acetate) extracts from some local plants and am seeking a research collaborator. I will provide dry crude samples for phytochemical analysis and...

10 February 2024 2,761 0 View

I would like to learn about the chemical bonding in intermetallic compounds?

Focusing on intermetallic compounds, composed of two or more metals, this inquiry seeks to understand the nature of chemical bonds present within these alloys. Specifically, it aims to identify...

29 January 2024 8,127 4 View

Can anyone guide me rgarding the treatment of early embryonic stage of chick embryo?

I will apply a treatment by plant extract to fertilized chicken egg after 12 hrs of incubation. I need to calculate the doses and I want to know is this early embryonc stage can consider as cell...

14 January 2024 9,481 0 View

What is the best "in silico PCR" sites for bacteria that can be used?

The best online resource for conducting in silico PCR simulations of bacterial DNA.

01 January 2024 9,765 3 View

Exploring the "I": A Psychoanalytic Analysis of Selfhood and Identity in the Poetry of Sylvia Plath and Anne Sexton?

Please any relevant literature review or helpful materials on the above poets and their poetry. I am using these poems; for Sylvia Plath: - Lady Lazarus - Daddy - Mirror - Ariel - Tulips - The...

01 December 2023 10,004 2 View

How to investigate the quality of a coated layer of mxenes on a PTFE membrane?

In other words how I can ensure the coated layer adhere to the membrane strongly

30 October 2023 5,873 2 View

What is the reason for current dropping in OER , LSV curve?

I tried four trials of the same Copper Phosphides sample in Alkaline medium ( 0.5M KOH) with Hg/HgO reference electrode and Pt as counter electrode. I used 0.001 V/s scan rate for first three...

10 August 2024 3,629 1 View

What may be the reasons for failures of Tube toi Tube Sheet Joints in Boiler Drum ?

We have observed that tube to tube sheet joint leaked in our boiler and needs to overcome same by knowing the root cause.

08 August 2024 3,161 0 View

In the presence of VERY high concentration (1000 ppm) of silicon, the adsorption isotherms of arsenic are showing anomalous trends, why so?

I conducted an adsorption experiment of arsenic on soil in the presence of different doses of silicon as competing ions to see the effect of silicon on arsenic adsorption and desorption. I took 5...

03 August 2024 6,500 3 View

What is the problem with these tissue culture plants?

All plants are green but some of these plants becomes yellow. I did not found any reason. Please help me to find out the real problem.

01 August 2024 589 4 View

Reason for discontinuities in my Band structure?

Hey All! I am wondering what might be wrong with my band structure. I did the calculations using VASP and plotted the results using Origin. Although I have tried changing various input...

25 July 2024 2,920 11 View

Is it fare for editors of reputed Journals to put on hold manuscripts more than six months without review updates, Are they harassing researchers?

It is being seen that Editors of some reputed Journals are putting on hold the manuscripts and not updating review states even passing more than six months from submission. Researchers are...

24 July 2024 8,596 2 View

Is there a method that I can measure alcohol dehydrogenase activity using NAD+ in enzyme extraction from plants?

17 July 2024 935 1 View

Has anyone tried freeze flow samples in -80C freezer or liquid nitrogen before processing?

Our lab has some radioactive cell samples that need to be kept frozen for at least 30 days before flow analysis. For some reason, the samples stored in liquid nitrogen did not perform as well as...

15 July 2024 9,975 1 View

How to prepare alcohol foam with high alcohol content?

Hi everybody, I wonder is there a way to prepare foam from iso-propanol/water mixture? The content of this alcohol should be 70 – 80 w.%. I plan to use silicone-based surfactants, I have several...

15 July 2024 3,539 0 View

My Cyclic voltammetry curve doesn't show cathodic peak of Cu2+ to Cu+. how to solve this problem?

I performed CV of Cu-MOF in a buffer solution of pH 8, and we did not find any peak corresponding to Cu2+ to Cu+. What is the reason behind this? Please give your valuable suggestions.

08 July 2024 2,388 4 View