Arjun Singh

19 Questions 12 Answers 0 Followers

Questions related from Arjun Singh

How can we deal with stability issues in pervoskite solar cell?

How to study the degradation?This is very unstable device

11 November 2016 6,841 1 View

How to check whether the active layer is good or not in pervoskite solar cell?

Actually we are making pervoskite solar cell in glove box but we are not getting photovoltaic effect. Could you please suggests the method to verify the active layer quality without device...

03 March 2016 3,403 2 View

How do I calculate work function from contact potential difference (Vcpd) in kelvin probe force microscopy (KPFM)?

I am doing the SKPFM of some sample. The scale bar ( nap potentail image) is giving the maximum and minimum value of Vcpd. I want to know whether the average value of Vcpd is equal to work...

06 June 2015 1,565 26 View

In a solar cell module, do the silver lines which are used as electrodes reflect incoming light?

Although it should, but do we really take into account their area while calculating efficiency because in that particular area no light is actually absorbed.

02 February 2015 9,594 6 View

Why is the short circuit current calculated from EQE measurement different to Jsc from I-V measurement? Could it be corrected?

I have calculated Jsc from EQE measurement which is almost 1mA/cm2 less than normal Jsc measured from solar cell I-V data. Could anyone help to correct it. I will be very thankful.

12 December 2014 2,014 15 View

What is the best thickness of Lithium Floride(LiF) in polymer bulk heterojunction? Does higher thickness of LiF reduce current?

I am depositing LiF(1.5 nm) as electron transporting layer in POlymer solar cell (P3HT:PCBM as active layer). I want to know what is the effect of higher thickness of LiF in polymer solar ...

12 December 2014 4,761 4 View

How do you check the performance of P3HT:PCBM film for device fabrication without making polymer solar cell?

I am working on printing of P3HT:PCBM film for solar cell application. I want to check whether the active layer will work or not, without making device. I am doing characterization like UV-Vis...

09 September 2014 9,586 5 View

How can I calculate short circuit current(Jsc) in polymer bulk heterojunction solar cell from external quantum efficiency?

I want to calculate Jsc from EQE and want to match with Light I-V data. Could you please suggests the method?

09 September 2014 6,621 4 View

How can I calculate internal quantum efficiency (IQE) from EQE in a polymer bulk heterojunction solar cell?

I want to calculate the IQE from EQE. I have all data absorbance as well as EQE. I also want to know what exactly purpose of IQE in solar cell.

09 September 2014 3,073 8 View

How do you reduce the de-wetting of P3HT:PCBM solution on ITO coated substrates?

I am making P3HT:PCBM film on ITO coated substrate but I am getting the film with small particles over the surface(see attached pic). Is it due to dewetting or due to non-mixing of P3HT:PCBM? Is...

07 July 2014 3,739 1 View

How do we reduce the nucleation of PCBM in P3HT:PCBM blend film in polymer solar cell?

I am making printed P3HT:PCBM (solution made in 1,2- dichlorobenzene and stirring at 40 degree C whole night) film on ITO/glass substrates but the PCBM is nucleating after annealing. Could you...

07 July 2014 7,259 2 View

How can I prepare a polymer sample for TEM?

I want to do TEM of a P3HT:PCBM blend. Could you please suggests the process? I want to do it for organic photovoltaic devices application.

06 June 2014 2,449 7 View

How can I calculate equilibrium contact angle from dynamic contact angle measurements? I have Contact angle Vs time data.

I have measured dynamic contact angle. Now I want to calculate equilibrium contact angle form this data. Could you please help?

05 May 2014 4,151 4 View

Can you please tell me how to calculate optical density for a thin film?

I have absorbance vs wavelength or Transmittance Vs wavelength data. Please suggests how to calculate optical density.

05 May 2014 5,271 1 View

How can I measure the contact angle for fast spreading liquid on ITO/glass substrates?

I want to measure the contact angle on ITO coated glass after ozonization/plasma treatment.

02 February 2014 5,811 2 View

Could you explain why printed film shows non-uniformity, even when the contact angle is less than 20 degrees?

I am making thin film with aqueous solution on ITO/glass. The contact angle with ink is less than 20 degrees. Coalescence of ink occurred at some places.

01 January 2014 1,580 5 View

Could you suggests any good references to study performance analysis of organic solar cell based in reverse bias region?

Actually, I want to study the performance analysis of OPV based on reverse biased voltage. Please suggests the good references based on modelling or experiments.

01 January 2014 6,036 1 View

Could you please suggests how to remove lines that I am getting on printed film with certain nanometer thickness and separation b/w lines is 300 um?

I am printing oxide ink using dimatix inkjet printer. The jetting are of good quality. but after printing the wave nature are formed. The separation between the lines are about 300-400 um and...

12 December 2013 7,308 6 View

Could you please tell how to reduce the contact angle of ITO coated glass substrates using some solution processing?

I can reduce CA using ozone/plasma treatment but I need solution treatment.

11 November 2013 2,262 6 View