Rekha Bai

37 Questions 7 Answers 0 Followers

Questions related from Rekha Bai

How can I analyze The SAED pattern generated by HRTEM and how can I calculate the d spacing from it and what are the parameters I need know?

I am attaching one SAED pattern here.Please do the basic analysis of that pattern to explain it.

23 April 2015 2,505 2 View

How to prepare the solution for ternary CdSexTe(1-x) thin films??

Can anyone explain in brief how to prepare the solution for ternary CdSexTe(1-x) thin films e.g. CdSe(0.6)Te(0.4) thin film?

07 October 2014 4,907 2 View

How one can explain the band-gap modification in CdSe/PbS binary structure by Vegard's law?

For CdSe/PbS multilayer,I want to explain the bandgap modification by Vigard's law.How should I explain the same?How this structure can be used in photovoltaics applications?

17 September 2014 1,185 5 View

What is the role of anions in lead precursor for the deposition of Lead sulfide by electrodeposition (ED)?

What is the role of NO3- ,Cl-,SO4- , acetate ions in deposition of PbS by ED method? How these ions affect the quality of the film formation?

16 September 2014 5,384 4 View

Can anyone suggest a reference electrode for electrodeposition?

Can anyone suggest a reference electrode for electrodeposition in aqueous solution? Which one is better between a Saturated Calomel Electrode (SCE) and an Ag/AgCl reference electrode?What is the...

29 April 2014 2,080 21 View

How to prepare 1M PbCl2 solution in organic solvent e.g. dimethyleformamide (DMF)?

How much lead iodide is needed to make 100ml of non-aqueous 1 M solution? Is the method the same for the preparation of solution in water or some organic solvent?

08 April 2014 4,657 6 View

Can anyone tell me about importance of ZnO/CdS/PbS heterostructure for photovoltaic applications?

18 January 2014 7,625 1 View

Can CdS be an absorber in thin film solar cells?

Plz suggest me some good absorber material in solar cells.

11 January 2014 1,230 3 View

How can we decide the thickness of absorbing layer in thin film solar cell?

On which parameters does the thickness of absorbing layer depend?

02 January 2014 263 3 View

Can anyone explain the role of window layer in thin film solar cells?

How CdS acts as window layer in ZnO/CdS/CIGS solar cell?

02 January 2014 8,516 5 View

How can we increase the charge separation and collection efficiency in p-i-n type solar cells?

Explain the working principle of p-i-n solar cell.

02 January 2014 6,057 2 View

How can we trap more light in nanostructures than thin films in solar cells?

Light trapping.

02 January 2014 645 1 View

How ZnO/CdS core-shell acts as solar cell?

Please explain in detail the action of ZnO/CdS in photovoltaic performance?

02 January 2014 6,992 0 View

What is the role of the ZnO layer in dye sensitized solar cells (DSSCs)?

02 January 2014 2,518 3 View

How can we increase the efficiency of solar cells by using tandem solar cells and nanostructured solar cells?

02 January 2014 3,799 0 View

Why do the short-circuit current of each junction in tandem solar cell have to be equal?

Why not open-circuit voltage?

02 January 2014 6,230 1 View

What is the role of ZnO nanorods in ITO/ZnO nanorod/CdS nanoparticles/CIGS/Ag solar cell structure?

02 January 2014 8,786 0 View

What is the role of diffusion length and window layer thickness on photocurrent in thin film solar cell?

25 December 2013 5,692 2 View

How can we determine the texture and strain in films from XRD?

I want to know the difference between orientation and texture of the film.

23 December 2013 5,421 4 View

How we can calculate chemical state and bonding from XPS data?

XPS data analysis

20 December 2013 5,306 3 View

Can we deposit a thin film of CH3NH3PbI2Cl perovskite by sputtering?

I want to know how can we deposit the above perovskite by sputtering.

14 December 2013 8,190 4 View

Why should the p-layer be thin in solar cells?

04 December 2013 3,042 3 View

Can anyone help with ZnO/CdS band levels?

From where we know that the CB edge of CdS is upper than the CB of ZnO. Where will be the zero level? What factor decides this band edges? What is the fermi level and vacuum level of these?

04 December 2013 1,446 1 View

What is the actual role of ZnO, ZnO/CdS and ZnO/metal/CdS layers in CdTe or CIGS solar cells?

Why?

23 November 2013 534 1 View

What is the growth mechanism of zinc oxide on conducting surface?

When ZnO is grown on a conducting surface by electrodeposition, the first layer will form directly through the hydrolysis of zinc hydroxide. Once this surface is grown, the next layer grows on a...

13 November 2013 3,208 1 View

By adding which chemical during electrodeposition in Zinc Oxide nanostructures can one tune the conductivity?

I have deposited ZnO nanostructures by electrodeposition and now want to measure change in conductivity by doping (Al,In etc.). How can I effectively dope? Please suggest some recent articles

12 November 2013 9,409 2 View

What's the difference between GAXRD and Gonio mode of XRD?

Which one is better and how?

01 November 2013 2,112 7 View

How does Zinc oxide (ZnO) act as buffer/Contact layer in CuIn(S,Se)2 and CIGS solar cell devices?

I want to know the role of ZnO in these solar cells. I am confused as to how it acts as a Buffer/Contact layer.

02 October 2013 538 6 View

Can we find the thickness of film from XRD peaks? If yes then how?

I want to know thickness of electrodeposited ZnO film from XRD data.

24 September 2013 3,493 5 View

What is the actual role of reference electrode and counter electrode in 3-electrode system in electrodeposition?

Also want to know how 3-electrode system is better than 2-electrode system.

22 September 2013 9,594 15 View

How can one get the current density and charge (Q) from I-t curve (chronoamperometry) in electrodeposition?

From chronoamperometry how to calculate charge flow?

22 September 2013 9,230 1 View

Can anyone suggest how to analyse SEM micrograph images?

Is there any software to analyse SEM images which is freely available?

20 September 2013 5,836 23 View

Can anyone suggest to me a suitable reference electrode for electrocution?

I want to get information regarding better reference electrode and which is of low cost.

18 September 2013 6,751 3 View

Can anyone suggest some good recent articles on chemical bath deposited(CBD) CdS, in which ammonia free complexing agent is used?

Because ammonia is toxic. Also any suggestion on the procedure of CBD deposition?

18 September 2013 9,960 1 View

Can anyone suggest me how to create step in film during electrodeposition for profilometer measurement(thickness)

I have deposite the CdS films on ITO coated glass substrate. I have tried alot but i am not able to create sharp step for profilometry.

18 September 2013 6,196 4 View

Can anyone suggest to me a suitable etchant for cds electrodeposited on ITO?

I have deposited cds on ITO by electrodeposition. Now I want to create sharp step in film for profilometry measurement (thickness). So I want to know how to create sharp step in film either during...

14 September 2013 4,217 2 View

Can anyone suggest me novel semiconducting materials for the applications in photovoltaics, which can be deposited by electrodeposition technique?

07 September 2013 4,105 2 View