Muhammed Ali A.V

6 Questions 10 Answers 0 Followers

Questions related from Muhammed Ali A.V

How can I measure the band gap of ZrO2 & Al2O3 thin films from optical measurement?

I am working with Alumina & Zirconia thin films by reactive dc magnetron sputtering on silicon & soda lime glass substrates. Is it possible to use the Kubelka-Munk method from diffuse...

01 January 2015 3,462 11 View

Can someone explain why all of my TFTs are showing ambipolar behavior? Is this a problem with measurement or device?

I have fabricated TFTs on SiO2(300nm)/Si(n++) substrate using ZnO as an active layer of thickness 10nm-30nm. For all TFTs, it shows ambipolar behavior!!!. Can anyone tell me is it the problem...

01 January 2015 4,720 11 View

Can someone explain the relation between flow rate and partial pressure of the gas?

Whether 1sccm=1.69x10-2Pa is it standard value? or it’s differ for chamber dimension and gas. In my case this equation not hold good. Usually I find partial pressure by the difference of final...

02 February 2014 1,466 12 View

Can someone advise on removing the oxide layer from zirconium target?

Even after repeated scrubbing using sandpaper (high roughness), oxide layer still remains on the target (showing discontinuity on the surface of zirconium target). Is there any solution to...

01 January 2014 2,243 2 View

How does grain size depend on the optical energy band gap of a thin film sample?

For example, increasing the thickness of the film causes a decrease in grain size, as a result of the increase in energy band gap. So how does the grain size depends on energy band gap?

04 April 2012 3,013 12 View

about indium oxide(IO) thin film

i am doing indium oxide thin film by resistive heat method. now looking for a anti-reflection coating in VU region only.can anybody tell me, how i can get transmittance only in the visible region...

11 November 2011 1,100 4 View