Why XRD peak absent in MA3Sb2I9 prepared by two step method compare to the MA3Sb2I9 prepared by one step method?

Hello All Researchers, I have prepared MA3Sb2I9 perovskite film on FTO employing two different approach. The XRD was same except absence of one peak in the MA3Sb2I9 prepared by two step method....

31 December 2019 2,285 2 View

How to find out the leakage current density and trap state densities for perovskite solar cells?

Hi All, I have developed Pb free perovskite solar cells and the performance was checked by measuring J-V analysis under i sun conditions. I want to calculate the eakage current density and trap...

09 October 2018 338 0 View

Why peak current Vs square root of scan rate is not linear?

Dear Researchers/Scientists, I have recorded the CVs at different scan rate (100-1000 mV) and plotted the graphs for Peak current Vs square root of scan rate. I have found it non linear. Why it...

08 September 2018 9,433 5 View

How to confirm the formation of new perovskite?

Dear Researchers, I have prepared new lead free perovskite but thier crystal structure is not reported. I have tried but I did not get the crystal too. I have recorded the powder XRD. Please...

05 June 2018 168 3 View

How to calculate the Recombination resistance using Nyquist plot?

Hi Respected Scientist/Researchers, I have done the EIS analysis for the perovskite solar cell device having MA3Bi2I9 as light absorber. I need to calculate the recombination resistance and...

04 May 2018 9,507 1 View

Why the XRD patterns powder form and thin film of Organic-inorganic hybrid perovskites is different?

Hi All, I have prepared the CH3NH3PbI3 perovskite powder and CH3NH3PbI3 film. The powder and Thin films shows two different pattern which are consistent with reported literature. However, i need...

03 April 2018 3,976 7 View

How to calculate Adsorption capacity for dye removal?

I have recorded UV-vis spectra for dye adsorption using metal oxide. Dye concentration= 200mg/L Adsorbent= 25mg The absorption peak was observed at 3.3 (intensity;a.u.) and it was absorbed with...

03 April 2017 2,383 1 View

How to calculate electrochemical active surface area for glassy carbon electrode?

I have done cyclic voltammetry analysis for methanol oxidation using graphene/SrZrO3 composite and it shows excellent oxidation current as compared to the pristine graphene or srzro3. Now i need...

01 February 2017 7,364 6 View

How to measure charge discharge study in mehtrohm potentiostate using Nova software?

I have performed GCD for supercapacitor but not getting proper curve, something is wrong. I have attached the recorded file. Please help to what parameters I have to set and how to set.

31 December 2016 6,685 6 View

Can MnO2 be used as electron transport layer in perovskite solar cells?

Generally, TiO2 or ZnO etc. have been employed as efficient electron transport layer since they have band gap around 3.2eV. MnO2 have a band gap of 2.4eV, can it be used as mesoporous layer in...

07 August 2016 1,923 11 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

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

Resistor definition in Piezoelectric bimorph with ANSYS workbench

Hello, good day! I am trying to simulate similar bimorph piezoelectric harvester with below commands. However, the output power doesn't change with resistor value. Please help to find the reason. ET,10,CIRCU94,0 !SET UP RESISTOR R,1,100000 !RESISTANCE VALUE TYPE,10 !SET ELEMENT TYPE E,1,2 !CREATE RESISTOR BETWEEN NODES 1 AND 2 Thanks in advance Regards,

02 March 2021 0 0 View

Arena simulation - how do i model the following model in ARENA (see description) (new to ARENA)?

Hello, I'm fairly new to ARENA and I have the following problem: I have two queues in which, in each queue, a different order type arrives (both having an arrival rate of exponential 10). Order...

02 March 2021 2,431 3 View

Is There Any Feasible Method To Test Fluorescent Compounds Other Than Fluorescence Spectrometers ??

Is There Any Feasible Method To Test The Efficiency Of Fluorescent Compounds Other Than UV Spectrometers ? Suggestions Would Be Appreciated !

02 March 2021 5,785 3 View

How to repeat an operation on an atom selection for multiple times in PyMol?

Hi, I am trying to construct a multi-layer fibril structure from a single layer in PyMol by translating the layer along the fibril axis. For now, I am able to use the Translate command in PyMol...

02 March 2021 4,569 4 View

What is the difference between genotype and haplotype data in the ped format?

Hi everybody In the ped format for genotype, alleles of any SNP are represented by two columns (one for each allele, separated by a space). Is a column sufficient for the haplotype to...

27 February 2021 1,965 1 View

Why initial concentration of Pb not the same as calculated one when testing using AAS?

I am currently doing research on the adsorption of heavy metal using magnetic reduce graphene oxide. I use AAS to determine the concentration of the heavy metal. I prepare the Pb solution with...

26 February 2021 9,580 4 View