We coated Magnisum Fluoride (1.5 Molar) solution and Spin coated on Cadmium Telluride (CdTe) glass plate.
Anealed (heated in oven) at 70*Celcius for 2 hours and then sent for XRD. But we got only single peak of CdTe, not of 2nd coat.
What steps should be taken in order to get 2nd coat peak of XRD ?
I think, the coating was not very uniform. You can check it out using FESEM. You may vary the rotation-speed, time of spinning, concentration of sample and annealing temperature to optimize your film-quality. For thicker film preparation, you may coat multiple times as well, before annealing.
Usman Iftikhar
The atomic numbers in MgF2 are considerably lower than those in CdTe and thus the intensity of scattering is going to be tiny in comparison. Plus the film is so thin (if indeed it exists at all) and the x-rays will penetrate through them to the underlying substrate. Calculate the depth of penetration. Grazing incidence XRD may be an option but I suspect you may have to increase the film thickness by a factor of 10 or 100 (and perhaps not by an attempted aqueous spin coat route but rather a sol-gel precursor).
BTW, your sentence does not make sense 'We coated Magnisum Fluoride (1.5 Molar) solution'. How do you coat a solution? It is usual in chemistry to have lower case letters for compounds - magnesium fluoride. Note the spelling of magnesium (not Magnisum)...
And how are you sure any MgF2 remained on the CdTe surface after spin coating? CdTe is hydrophobic and you're trying an aqueous spin coating route. Normally an evaporative route would be used for what (MgF2) is used as an AR coating.
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