Could someone advise if it is possible to dope ZnO with metal on Zn (74pm ionic radius) with metal like Ag, Cu, Yttrium like elements?

Which have larger ionic radius than Z? I have used citric acid and metal nitrate (1:1molar ratio) in water for synthesis and final heating at 600 C. My XRD trend shows the clear phase of y2o3 as...

11 December 2013 777 2 View

Wurtzite crystal structure?

"Wurtzite is the name given to the mineral ZnS. It has a hexagonal close packed array of S and the Zn(II) sit in tetrahedral (1/2 occupied) sites in the lattice" As the size of S2- ion is 184pm...

11 December 2013 9,223 3 View

Is it possible to calculate the band gap of Al2o3 by tauc plot?

I want to find the band gap of Al2O3. Is it possible with UV-vis study?

10 November 2013 6,932 2 View

Can anyone explain the reason of decrease in lattice constant of ZnO with yttrium doping?

I have doped ZnO with yttrium by gel combustion method using citric acid as a fuel in the XRD data I am not getting any impurity peak of Y2O3 for 1% doping of Y but still the lattice parametters...

09 October 2013 8,950 4 View

Is "Pechini method" specific to metal nitrate only?

Can this method be applied with metal salts of sulfate or chloride or acetate?

07 August 2013 7,051 3 View

Solgel spin coating for porous free ZnO thin film

I am trying to deposite sol gel ZnO thin film on conducting substrate by using chemical such as Zincactetdihydrate(0.5M), 2methoxyethanol and Monoethanol amine(1:1) with spin coating parameters...

06 July 2013 8,730 10 View

Does anyone know how and from where I can get this software?

04 May 2013 172 3 View

Can anyone please explain how we can calculate the refractive index and thin film thickness using the UV spectroscopy data that I have attached?

Refractive index and thickness of film.

03 April 2013 8,422 12 View

Is it ok to find the lattice parameters of the thin film by using Powder X software?

Lattice parameters by using Powder X software.

03 April 2013 6,422 18 View

How to make the contacts for dielectric measurements of thin film ?

If I am depositing my material on ITO glass then is it correct to make one contact on ito/ glass and second one on the film whose dielctric constant to be measured

03 April 2013 6,584 14 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

What are anisotropic electrical and optical properties of a semiconductor due to?

In some materials, properties such as band gap, thermal conductivity differ along different crystallographic axes. What are the basics?

01 March 2021 1,923 3 View

Any research papers for extraction of nutrient deprivation on macroalgae? Analysed by HPLC-UV and GC/MS. Possibly from macroalgae genus Rhizoclonium?

I am doing my thesis on the nutrient deprivation on the macroalgae Rhizoclonium sp. I will be analysing the levels over a period of roughly 5 days by HPLC-UV and GC/MS. I will be using seawater as...

28 February 2021 6,477 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

What information can be had from raman at higher wavenumber?

i have recorded raman spectra of strontium oxide thin film. the spectra were recorded in the range 400 to 4000 cm-1. i have reference to peaks upto 1000cm-1. but i couldn't find literature for...

26 February 2021 2,499 1 View

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25 February 2021 5,713 1 View

How can I find a Raman spectrum wavenumber corresponding to what compound?

I have several Raman spectra with very distinct peaks at certain wavenumbers, such as 277, 359, 466, 583, 623, 686, and 795cm-1. How can I identify them to what compound(s)? The RRUFF and others...

24 February 2021 363 3 View

Is this the write procedure for acid digestion of soil for heavy metal analysis using AAS?

How to do acid digestion of soil sample with 3:1 aquaregia in an open vessel?

23 February 2021 3,053 7 View

How can I simulate the optical absorption spectrum of a biomaterial (like DNA or protein) in COMSOL?

I need to simulate the optical properties of a biomaterial, namely DNA, in COMSOL. Basically I need to simulate the IR absorption spectrum of a cylinder filled with a 'concentration' of DNA. I am...

21 February 2021 3,043 3 View

Could the "incoming radiation (net radiation)" values be negative?

Could the "incoming solar radiation" values be negative? What is the difference between "global solar radiation" and "incoming solar radiation"? Which one might be measured negative values?

21 February 2021 7,726 9 View