Goutam Kumar Gupta

12 Questions 13 Answers 0 Followers

Questions related from Goutam Kumar Gupta

Can efficiency of solar cell decrease with increase in absorber layer thickness. If absorber is p type and has high donor type defect concentration?

If absorber layer material of solar cell has donor defect concentration comparable to the acceptor hole concentration, Then what will happen to the cell efficiency with increase in absorber layer...

11 November 2017 5,565 8 View

Is there any way to find conductivity or carrier concentration of a film deposited on conductive substrate?

I have deposited a thin film on conductive ITO substrate. Now i wish to find out the conductivity of deposited thin film such that conductivity of ITO does not affect the measurement...

06 June 2017 937 6 View

How to make better adhesion of indium contact on CZTS or CdS layer?

i want to make indium contact on my CZTS and CdS sample. while doing this using soldering indium forms droplet and do not sticks to the surface. How can i make it.

04 April 2017 1,962 2 View

What property of material makes it a good choice as diffusion barrier for impurity?

I want to select a barrier layer for impurity diffusion from the substrate. what are the parameters for good diffusion barrier. Al2O3 is reported well as a barrier layer. Can ZnO be an alternative...

11 November 2016 5,053 0 View

What is the standard procedure to Fabricate czts solar cell? My fill factor is below 30% what may be the possible reasons?

Kindly explain how should I Fabricate cell. What I do is 1. Taking Mo coated glass slide and protect corners using polyamide tape during spin coating of czts. 2. After spin coating polyamide tape...

09 September 2016 6,228 9 View

Why nickel is deposited before aluminum deposition in making contact on solar cell.What is the thickness ratio for nickel and Al for good contact?

why nickel is deposited before aluminum deposition in making contact on solar cell.What is the thickness ratio for nickel and aluminum for good contact?

03 March 2016 5,581 7 View

What information is obtained by Mott-Schottky Rs-Cp/Rp and Rs-Cs curve?

What are the information we can obtain and what exactly the meaning of Rs, Cs, Rp, Cp. If measurement is taken in three electrode electrochemical setup.

09 September 2015 8,390 0 View

What are the possible reasons for getting band gap more than 2eV of CZTS thin film?

I am trying to make CZTS thin film however its bandgap is coming more than 2eV.What are the possible reasons for this?I had annealed the film at 350C. 1.What are the possible phases that cause...

11 November 2014 1,330 5 View

I want to model CZTS solar cell in silvaco atlas. However, the material is not available in the simulator. How can I create a new material file?

How can i create new material file in silvaco atlas. Help me regarding this and suggest any reference for this.

10 October 2014 5,688 2 View

How can I prepare a uniform thin layer of CZTS by spin coating method?

I have prepared the solution for CZTS deposition using ethanol +DI water. But after heating the coated sample at high temperature, bubble spots are coming and thus the uniformity of thin layer is...

08 August 2014 3,410 6 View

How do you find the band gap from diffuse reflectance data of CZTS thin film?

The data is attached here. Kindly help me in finding band gap.

07 July 2014 9,938 1 View

Is there any way to deposit transparent conducting oxide (AZO or ITO) over SLG/Mo/CZTS/CdS film using solution method? what is the necessity of TCO?

Is there any way to deposit TCO at low temperature so that lower CZTS/CdS layer is not affected. what is the necessity of TCO? If we do not deposit TCO and directly form contact over CZTS/CdS or...

01 January 1970 2,745 4 View