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Questions related from Unniyarcha K.K
In the fig. given is a PL Emission spectra of ZnO. (1.) How to understand or to determine the no. of maximum or min. peaks to which the given spectra can be deconvoluted? Or else, are all these...
17 May 2025 6,535 0 View
I have synthesized TiO2 nanoparticles by TiCl3 and NaOH. The NaOH is added to Ticl3 solution to make the pH 8.7. and then stirred for 2 hours until the purple color became white. The precipitate...
28 February 2025 9,927 4 View
I am attempting to calculate the vertical carrier mobility through a semiconductor powder sample coated on FTO using Spin Coating method. The I-V results I recorded using SMU 2401, shows current...
27 January 2025 8,537 4 View
I am using expert highscore software for XRD data analysis. The database in this software is COD24_HS4x downloaded from Crystallographic open database. and while analysis the softwares matches the...
17 January 2025 1,256 2 View
I have seen JCPDS files mentioning Quality - C,H,I,O and * on the top left of each card. Which Quality JCPDS should be followed?
26 February 2024 743 2 View
I have added organic material to the synthesized inorganic semiconductor material. I took XPS to understand the Oxidation states. Is it necessary in this case to do the carbon correction?
04 November 2023 3,863 3 View
Please see the image I have attached.
22 August 2023 7,562 0 View
And the value of bandgap obtained from both the plots are 1.55 ev. Is it possible? If yes. Please explain why.
21 August 2023 4,233 3 View
I have ZnO nanoparticle powder and I want to make a film of ZnO on FTO. Suggest me any binder that I can use for spin coating of ZnO on FTO. After top electrode deposition I want to study the I-V...
08 August 2023 3,726 2 View
I have tried to synthesize copper nanoparticles by Chemical synthesis method by using CuSO4.5H2O, Ascorbic acid, and NaBH4. The Mole ratio of taken precursors is 1:2:10 (reported in some papers)....
27 March 2023 6,106 0 View
I have read that Exciton B.E= bandgap electric - Bandgap Optical. In order to find Exciton binding energy I must know the value of Optic bandgap and electric bandgap. How we can find the electric...
22 February 2023 2,287 0 View
I want to know whether Cl along with Al is also get doped in oxygen vacancies of ZnO. The ionic radius of Cl is comparable with Oxygen.
17 January 2023 9,826 2 View
I have to find the valance band edge of my sample. And it is done by UPS. If anyone knows about the availability of this technique in Indian please reply.
01 December 2022 9,962 1 View
I have powder sample of methyl ammonium bismuth iodide and I want to use it as the active layer of perovskite solar cell. How can I make film of this sample? In n-i-p configuration I am planning...
28 October 2022 8,741 2 View
I have synthesized metal oxide nanoparticles in such a way that it doesn't change its phase even more than 6 months ( by observation). I want to substantiate it by experiment data. That's why I...
27 September 2022 2,025 2 View
Oxidation induction time of a material at 205 degree celcius is measured as 17.2 minutes. From this data how to predict the oxidative stability of that material at room temperature.
17 January 2022 1,883 5 View
I have mixed copper(II) acetate monohydrate with PVP( PvP is not mentioned int above reaction) and to this NaOH is added. The first chemical reaction given above mentions the products. Now to this...
18 December 2021 4,771 0 View
I have synthesized Cu2O by chemical synthesis method. The size of the nanoparticles is found to be 27nm from XRD data. In UV spectrum one peak is at 543 nm and another at 782 nm. What implies the...
18 December 2021 532 4 View
I have synthesized Cu2O nanoparticle by chemical synthesis method. The obtained precipitate is dried and observed for 30 days. Its colour changed gradually to slight brownish black. XRD results...
23 November 2021 8,538 8 View
Copper has two oxidation states +1& +2. For more stability copper choses to be in +1 state. But copper also have +2 state. What are the factors which helps copper to remain in +2 state?
16 November 2021 9,557 3 View
My XRD data when plotted have some noise, baseline is not smooth and it is not on the zero of intensity axis. There are some unnecessary small peaks similar to noise I want to avoid those peaks....
23 September 2021 3,424 8 View
I have to select a material for electron transport material (ETL) in perovskite solar cell and lattice matching of ETL material with the perovskite is a necessary condition. suggest me the...
14 July 2021 4,332 3 View
If I Choose hybrid halide perovskite and inorganic hall transport layer, then is it possible to choose inorganic material for Electron transport layer? If I do so, which are the deposition methods...
01 January 1970 1,393 4 View
I have synthesized Cu2O nanoparticles & it's size determined from XRD data as 38 nm. I have analysed uv visible absorption spectroscopy, and from uv absorption data I found out bandgap by...
01 January 1970 8,101 5 View
Bulk Cu2O has bandgap 2.2 ev. I have synthesized nano Cu2O. It's particle size is 38 nm. Since it is known from theory that bandgap of nanoparticle is greater than that of Bulk. But my sample has...
01 January 1970 4,345 4 View
I have to calculate carrier mobility of metal oxide sample coated over FTO. I measured I-V and converted that data into J-V and plotted log J- log V. From that graph I tried to find the SCLC...
01 January 1970 7,782 0 View
