Arjun Singh

10 Questions 3 Answers 0 Followers

Questions related from Arjun Singh

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...

12 June 2015 4,015 42 View

How do I calculate the ideality factor from dark I-V characteristics of polymer bulk-heterojunctions?

I want to calculate the diode parameters from dark I-V of polymer solar cell. Could you please suggests the best method to calculate these parameters?

25 February 2015 4,131 4 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.

05 February 2015 5,728 4 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 ...

07 December 2014 8,605 3 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?

26 September 2014 2,028 3 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.

23 September 2014 9,873 7 View

What is difference between cconductive-AFM(c-AFM) and Kelvin probe force microscopy(KPFM) ?

I want to do measure surface potential. Could we do using c-AFM.

09 September 2014 8,528 3 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.

09 June 2014 2,405 7 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.

23 February 2014 730 1 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.

09 January 2014 2,873 4 View