Vivek Beladiya

4 Questions 6 Answers 0 Followers

Questions related from Vivek Beladiya

What is the most reliable method for determining composition in thin films?

I am investigating Cu2ZnSnS4 material for solar cell application. I have co-sputtered Cu, Zn and Sn. By going through literature survey people have used several techniques like EDAX, XPS some also...

06 January 2014 536 3 View

What is the best way to increase adhesion of co-sputtered metallic films to SLG substrate?

We are depositing Cu, Zn and Sn by co sputtering (DC biased magnetron) at room temperature on SLG (substrate temp). We find our film has poor adhesion with SLG. What is the best method to improve...

25 July 2013 506 1 View

How is CZTS or CIGS a p-type (or n type) semiconductor?

In silicon we use to dope pentavalent or trivalent impurities to make n type or p type semiconductor respectively. In case of CIGS and CZTS its structure itself makes it P type or N type. I think...

22 July 2013 981 2 View

Why ZnO (for thin film) becomes semiconductor when Zn is a metal?

Generally metals have valence and conduction band overlapping each other as the case in Zn. Can anyone explain, what role does oxygen play in creating the 'Band gap' of ~3.3 eV (at room temp) in...

07 May 2013 2,266 3 View