How to measure I/V on a polymer thin film solar cell?

I have prepared polymer solar cell on a ITO coated glass with the area of around 1 inch2. I am using four probe set up with sun simulator. The problem is when I am applying probes to the top...

10 November 2017 2,836 5 View

Is there any chemical etching agent which etch Silicon but do not react with Aluminum or ITO ?

I am working on Si thin film solar cells and to expose back electrode, I need to etch some Silicon out of it. Some silicon is also deposited on the sides of glass substrate which also needed to be...

10 November 2017 1,023 3 View

What could be the possible reasons responsible for poor fill factor in Si thin film solar cells?

I am working on Si thin film solar cells. I got voc of near 500 mV and Isc of about 25 mA/cm2 but with the fill factor of about 19 % only. Aluminum was base electrode and TCO was the front...

10 November 2017 1,253 13 View

If we have a p-i-n structured silicon solar cell with the thickness of about 40 micron, then can we call it thin film or bulk?

08 September 2017 5,410 8 View

Can anyone tell me how to analyze kikuchi lines obtained from TEM of thin film samples

I did TEM of thin film of Si on a glass substrate. The SAED pattern of the same has kikuchi lines. The study was done in simple diffraction mode without tilting sample. Please help me study...

07 August 2017 3,456 3 View

Does any theory available to explain halting of grain growth in nanocrystalline thin film while sintering after a minimal growth?

03 April 2017 9,514 4 View

Can we calculate EQE/IQE theoretically from Jsc measured experimentally?

I have got Jsc of 11.6 uA/cm2 and wanted to determine Quantum Efficiency of the solar cell.

11 December 2016 9,370 3 View

Is annealing necessary in case of silicon thin film solar cells before I/V characteriation?

I have sprayed silicon solar cells (p-i-n) on a glass substrate. The sprayed films are not stable and can be removed easily by touching it. I think I need to go for annealing of the films but I...

04 May 2016 4,815 8 View

How do I calculate effect of instrumental, shape and strain effect on FWHM to calculate crystallite size?

11 December 2015 5,690 2 View

I noted reduction in grain size of Silicon thin film after sintering at 700 C compared to un-sintered Silicon powder. How is it possible? reference?

Grain size is calculated using deby-scherrer formula.

09 October 2015 1,759 6 View

error in running a model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

error in modelling model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

MGL tools

20 June 2021 0 0 View

How climate change will influences human and animal behavioral change?

The role of climate change influencing the human behavior as well as economics interest

01 June 2021 0 0 View

flexibility of polymers chain

effect of double bond on the flexibility of polymers

07 April 2021 0 0 View

i have some problem with chtMultiRegionSimpleFoam

--> FOAM FATAL ERROR: Maximum number of iterations exceeded From function Foam::scalar Foam::species::thermo::T(Foam::scalar, Foam::scalar, Foam::scalar, Foam::scalar (Foam::species::thermo::*)(Foam::scalar, Foam::scalar) const, Foam::scalar (Foam::species::thermo::*)(Foam::scalar, Foam::scalar) const, Foam::scalar (Foam::species::thermo::*)(Foam::scalar) const) const [with Thermo = Foam::hConstThermo >; Type = Foam::sensibleEnthalpy; Foam::scalar = double; Foam::species::thermo = Foam::species::thermo >, Foam::sensibleEnthalpy>] in file /home/ubuntu/OpenFOAM/OpenFOAM-4.1/src/thermophysicalModels/specie/lnInclude/thermoI.H at line 66. FOAM aborting #0 Foam::error::printStack(Foam::Ostream&) at ??:? #1 Foam::error::abort() at ??:? #2 Foam::heRhoThermo >, Foam::sensibleEnthalpy> > > >::calculate() at ??:? #3 Foam::heRhoThermo >, Foam::sensibleEnthalpy> > > >::correct() at ??:? #4 ? at ??:? #5 __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6" #6 ? at ??:?

24 March 2021 0 0 View

Formulation of polymer color flakes

I am writing to request some information for making polymer color flakes. I would appreciate the help.

17 March 2021 0 0 View

Anyone plz suggest relevant topic for research in image processing+Deep learning.?

I have selected brain tumor images ...but now found that already lots of research done n this topic.

03 March 2021 5,774 3 View

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10?

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10? Since, the growth curve from day 2 to 10 won't be like the "Logistic curve" it might not follow logistic...

03 March 2021 1,401 3 View

How to increase a model accuracy ?

dear community, my model is based feature extraction from non stationary signals using discrete Wavelet Transform and then using statistical features then machine learning classifiers in order to...

03 March 2021 6,994 5 View