Paramita Sarkar

12 Questions 16 Answers 0 Followers

Questions related from Paramita Sarkar

What can be the the potential of charge extraction and the disposition of interfacial band alignment of CH3NH3PbCl3/CH3NH3SnI3 layers in solar cells?

If we use CH3NH3PbCl3 as Electron transport layer and Ch3NH3SnI3 as absorber layer.

26 June 2021 291 2 View

What are the probable advantages if we use similar type of perovskites as ETL as well as absorber layer?

Is there any possibility of improvement in interface engineering if we use perovskites as ETL as well as absorber material? Say, CH3NH3PbCl3 is used as ETL and CH3NH3PbI3 as absorber layer.

26 June 2021 4,345 3 View

Why the bandgap of CH3NH3PbCl3 films are different for spin-coating method and electrospinning method?

The observed bandgaps are 3.8 eV and 3.4 eV for spin-coated and electrospun films, respectively. What are the possible reasons?

09 January 2021 5,863 6 View

Why lattice strain is higher in the perovskite film fabricated via electro-spinning method compared to the film fabricated via spin-coating method?

I have coated CH3NH3PbCl3 film onto glass substrate via two different methods. First one is one step spin coating method and the other one is electrospinning method. The calculated lattice strain...

09 January 2021 7,429 3 View

What is the possible reason for increased non-radiative recombination with indium (In) doping in lead (Pb) site of CH3NH3PbCl3 perovskite?

Non-radiative recombination increases with increasing content of indium (In) in CH3NH3PbCl3 perovskite.

09 January 2021 9,068 5 View

PL efficiency is higher i.e. better crystalinity for undoped semiconducto than doped one, but SEM shows less defect in doped one.How to explain it?

Undoped semiconductor shows better crystallinity in terms of higher photoluminescence (PL) intensity, in comparison to gallium doped semiconductor. But SEM images show that undoped semiconductor...

18 June 2020 5,670 8 View

What is the reason behind the appearance of sub-bandgap after 10% gallium doping in the pure semiconductor. But why the sub-gap disappeared for 20%?

Sub bandgap is absent in undoped semiconductor. Sub-gap appeared for 10% Ga-doping and again disappeared for highly doped sample such as 20%.

18 June 2020 1,590 4 View

How an increase in doping concentration in semiconductor shift the defect level to higher energy inside the band gap?

the band gap due to doping decreased (e.g., red shifted) to a certain minimum value (i.e., critical size) with decrease in particle size from an estimated bulk value. Further increasing in doping...

12 July 2019 845 4 View

Can I refer COD (Crystallography Open Database) ID instead of ICDD PDF no. for XRD analysis?

Instead of ICDD PDF number, COD ID can be referred or not?

15 May 2019 4,120 8 View

Is shifting of xrd peaks obvious during the doping? What extent of XRD peak shifting(e.g. <1 degree) is acceptable?

I have doped Sn in CH3NH3PbI3. There is shifting of peakes towards the lower value of 2Theta degree.

11 March 2019 5,873 9 View

Is there any chemical procedure to get InI2 or GaI2? And the names of solvents in which they are soluble?

Chemical procedure to get InI2 / GaI2 (Indium(II) iodide) or gallium (II) iodide

19 April 2017 4,855 3 View

Is Indium dichloride (InCl2) soluble in HCl or HI?

If InCl2 is soluble in HCl or HI, then what will be the resultant product.

11 April 2017 4,793 2 View