Rehab Ramadan

6 Questions 11 Answers 0 Followers

Questions related from Rehab Ramadan

What might cause an increase in the pressure of the growth chamber of the molecular beam epitaxy system?

I am using a new system of molecular beam epitaxy (COMPACT 21). the pressure of the growth chamber was 10^-10 torr. suddenly, we found it a round 10^-7 torr. This increase in the pressure happened...

13 February 2024 3,234 0 View

Is p-type silicon (100) only could generate photocurrent?

If we deposited two contacts to p type silicon. the back contact is Al and the front contact is ITO. Is the device could generate photocurrent when applied to solar simulator? Also if porous...

03 September 2018 1,328 3 View

Please, What is the parameter could effect on porous silicon pore diameter if i use the same conditions?

I prepare porous silicon with conditions used before with the same properties of silicon substrate, but usually i get pore diameter lower than the one previously obtained. Could anyone tell me...

04 July 2017 7,972 5 View

What is the suitable solvents used as a removers for patterning thin films by direct UV lithography?

I am using ultraviolet radiation for negative patterning of a thin film and i used acetone as a remover but it is not sufficient to remove all the residual parts.

14 November 2016 3,165 1 View

Is ZnO solution has a life time after preparing?

I prepared zinc oxide solution from zinc acetate, and the solution gave me a good prepared film with good adhesion, but after one weak I tried to prepare the same film under the same preparation...

06 November 2016 8,307 5 View

How can I get a clear solution by dissolving tungsten powder in hydrogen peroxide ?

I want to form tungsten oxide thin film by dissolving tungsten powder in H2O2 but i can`t get complete solvation

25 May 2015 8,169 2 View