Omar Abdelrahman Mohamed Abdelraouf

4 Questions 2 Answers 0 Followers

Questions related from Omar Abdelrahman Mohamed Abdelraouf

How can I remove Cr hard mask after plasma etching of amorphous silicon using CHF3 chemistry?

I did the fabrication process in attached figure. 1 - Preparing chromium mask using lift off process of thickness ~60nm on amorphous silicon of height ~300nm. 2 - Perform inductive coupled plasma...

11 November 2019 8,892 4 View

Can we use ellipsometer for measuring change in phase of linear polarized after reflection at any wavelength?

Ellipsometer measure refractive index of material using reflection ratio between p- and s-polarization. Could phase information (delta) be converted to estimate the phase change in p-polarized...

08 March 2019 512 0 View

Metamaterial surfaces are used to enhance light absorption in photovoltaic, however absorption calculation have many equations, which one is right?

In last decade, number of papers studied effect of using many shapes/types of metamaterial surfaces to enhance light absorption in photovoltaic, I found many equations used in different papers,...

02 March 2017 5,139 0 View

Could we replace Silver/Gold with Molybdenum for Nanophotonic metamaterial absorbing surface?

To target low cost for photovoltaic, we need to replace Silver/Gold with cheap material has good plasmonic properties at optical wavelength. Does Molybdenum has been reported before to be a good...

23 November 2016 7,952 2 View