Saianand Gopalan

11 Questions 60 Answers 0 Followers

Questions related from Saianand Gopalan

Can someone please inform how to obtain J-V curves for Perovskite Solar Cells?

Can some one please inform how to acquire J-V curves for perovskite solar cells?Fabricated structure is ITO/PEDOT:PSS/Perovskite/PCBM71/Al. The perovskite precursor used here is equimolar PbI2:MAI...

06 November 2015 3,193 9 View

Does anybody know the solubility of Cu nanopowder?

Please suggest some suitable organic solvent for Cu nanopowder dispersion? Also advice on the concentration. I would like to use this dispersion to fabricate a film atop the water soluble...

19 June 2015 9,551 3 View

Can someone please suggest the best fabrication spec for making P3HT ICBA61 with solvent additive 1,8-DIO?

I have tried fabricating with the same spec (that gave best PCE of 3.67% for P3HT PCBM61 with 3% DIO) for P3HT ICBA61, but witnessed poor PCE of < 2.50 %. Awaiting for your kind advice/suggestions.

24 November 2014 4,666 6 View

What is a suitable solvent for etching/cleaning Vanadium oxytriisoppropoxide (VTIP) solution after spin coating?

Can some one please suggest suitable solvent for etching/cleaning Vanadium oxytriisoppropoxide (VTIP) solution (a precursor solution dispersed in Isopropyl alcohol)? We have tried etching...

15 September 2014 3,130 7 View

Are there any alternative storage (other than glove box) for photoactive materials (OPV)?

Can some one suggest alternative storage place for photoactive materials like P3HT, PCBM, etc. We dont have sophiscated glove-box environment for storage and solar cell fabrication. It is known...

29 August 2014 2,937 4 View

What is the best cleaning procedures for ITO substrates?

Can some one please advice on the best cleaning procedures for ITO substrates for organic/polymer solar cell applications? Is this going to determine the overall performance parameters of the...

12 August 2014 1,619 11 View

What is the optimal active (blend) layer thickness for P3HT:PCBM/ICBA based photovoltaic cells?

Many report says thicker active blend film will be good for obtaining decent PCE? However, in our laboratory environment, thinner active film (~ 90 to 100 nm for both P3HT:PCBM/ICBA) is showing...

03 July 2014 3,574 12 View

Are there any reports available on active layer thickness effect for P3HT:ICBA based BHJ solar cells?

I tried fabricating thinner blend layer (P3HT:ICBA) films (without pre-thermal annealing) with the conventional structure of ITO/PEDOT:PSS/Active Layer/Al (125 nm), but the results wasn't...

24 March 2014 9,037 12 View

What is the best fabrication procedure for high performance P3HT:ICBA based active system?

Someone please inform us on the device fab procedure for obtaining PCE. We work on ITO coated glass and PEN substrates. If possible, please provide information on published literature. Thanks in...

29 January 2014 6,623 2 View

Regarding HOMO, LUMO energy levels determination from Cyclic Voltammetry (CV)?

Is it fine to extract HOMO and LUMO from HOMO= − (E[onset,ox] + 4.66) and LUMO= − (E[onset,red] + 4.66) equation from CV measurements. But I noticed in many reports, researchers are obtaining HOMO...

25 January 2014 3,568 17 View

Which substrate (Si, glass) should I use to study thin film conductivity (four point probe)?

Should I heat treat/anneal after film deposition? How about performing conductivity study on glass substrate? Any details or suggestions are appreciated.

24 January 2014 721 4 View