Dear All, Can anyone please tell my the possible reasons for not getting diode characteristics of solar cell ?

My device structure is ITO/PEDOT:PSS/Active layer/Al. Here i am using p3ht-cnt composite as the active layer. During dark i-v measuring i am not getting the usual diode characteristics for the...

31 December 2015 6,477 6 View

How can I take the c-v characteristics of P3HT film deposited over glass substrate ?

I am interested for capacitance voltage measurement of p3ht film. I am depositing aluminium dots above the p3ht film. But when i am measuring the c-v characteristics, am not getting the data as...

04 May 2015 1,951 9 View

Which is the best solvent for dispersing RGO without functionalizing it?

There are lots of articles that describe the dispersion of RGO. But most of them are by covalent functionalization. Though it enhances dispersion but degrades the properties of the material. Hence...

06 July 2014 522 11 View

Can someone help me calculate the electron and hole mobility from R-T measurement?

I have prepared a polymer composite film. I want to compare the charge mobility. Could somebody please help me with some references?

04 May 2014 8,144 3 View

How can I coat a thin layer of PEDOT:PSS over SiO2 so that I can characterize its film thickness?

I have prepared a thin film of PEDOT:PSS over SiO2 substrate. I tried masking the substrate with teflon tape but the solution get stuck near the teflon tape and the thickness there is greater...

04 May 2014 7,826 5 View

I have prepared reduced graphene oxide using solution method. Can someone explain to me how to filter to get the required material?

Here I am using PTFE filter paper, but it is very much brittle. It can not be bent or folded. So it is being very difficult to filter. Please explain

03 April 2014 1,902 3 View

How can we measure the smoothness of thin film?

Sometimes relation between different layers (thin films) of device play an important role in device performance. So it needs to be optimized.

02 March 2014 351 7 View

Can someone please explain the meaning of 2.5 wt% dispersion in H2O?

I am interested in preparing a composite with PEDOT:PSS. But I don't understand how to maintain the ratio as I don't understand what 1.3 wt% dispersion in H2O means.

01 February 2014 2,543 3 View

How can we allign carbon nanotubes in a polymer matrix?

Polymers with CNT filler have proved themselves as important candidates in the category of polymer composites due to their good physical properties. Hence can we in some way align them in an easy...

01 February 2014 9,405 17 View

How can I prepare Graphene using the electrolysis method?

Graphene has been a material of interest since its discovery in 2004 on account of its excellent physical properties. Can someone please explain the synthesis of Graphene by electrolysis?

31 December 2013 3,828 3 View

After a reference from Int J Body Compos Res, can any body help?

Hi, I am after the reference below, my library says it cannot obtain a copy either locally or internationally, any help appreciated! Chris Wang ZM, Heshka S, Wielopolski L, Pi-Sunyer FX, Pierson...

03 March 2021 6,193 1 View

Can we block unwanted images during the x-ray prediction?

i am try to classify the x-ray images. During classification , can i block unwanted images (except x-ray image).

03 March 2021 7,100 1 View

Does anyone know to clarify these changes?

01 March 2021 1,290 2 View

In an eye with Tyndall, does each dot correspond to an individual cell?

When you observe the presence of Tyndall in an inflamed eye: Does each of the small floating dots correspond to an individual cell or to an aggregate of cells? Does a conventional slit lamp have...

27 February 2021 6,326 2 View

How to calculate the crystallinity of cellulose film?

27 February 2021 2,753 4 View

What could be the reason for not having further low chi square value (better agreement) in my refinement result?

I have tried every combination of parameter changes and after that i have a poor chi square value. I can't get it lower any further. I know there have been a lot of discussion about Rietveld...

26 February 2021 8,480 3 View

Can anyone share his experience regards Smoothing in origin?

I am working on TiO2 composite material and the results of XRD have a lot of small/junk peaks and while I apply a smooth filter in Origin then the other characteristics peaks disappear so anyone...

26 February 2021 8,183 3 View

How to replicate the well conditions of a crystal hit with 20%(w/v) isopropanol?

I had a crystal hit in a well with 0.1M HEPEs pH 7.5, 10%(w/v) PEG 4000, and 20%(w/v) isopropanol. Why is isopropanol in w/v here if it's just solvent? How do I recreate this well condition?

25 February 2021 9,761 1 View

I have need of XRD graph analysis software for phase identification. Can you please provide links for software tools which can be downloaded?

i am trying to download x'pert high score software, but can't download it. please do suggest software for phase analysis

24 February 2021 5,687 4 View

Why the CHi^2 is close to zero with a bad fitting but the Rp and Rwp are still high?

I am refining my XRD data using in FullProf program. The intensity of the modulated X-ray peaks is almost flat. I tried to adjust the peak intensities but unsuccessful. What is the reason? I guess...

23 February 2021 2,304 4 View