What is the best metod for preparation of thin films of chalcogenide glasses?

More Dr. Anjani Kumar's questions See All

Which selenium based alloy is more appropiate for optical devices application point of view?

Is this is Se-Cu or Se-Pb or Se-In or Se-Ag or Se-Al or any other chalcogenide glassy system, Kindly specify and give suitable explanation for the same.

07 August 2017 9,332 3 View

Is chalcogenide materials suitable for proto type three dimensional printing?

give suitable answer.

31 December 2016 6,826 0 View

What is the difference between four probe and two probe measurement method?

Well known answer is that, two probe method is appropiate only for highly resistive material and four probe measurement method is only for low resistive material, but for determination of band gap...

08 September 2016 8,788 9 View

Is it possible to draw a B-H curve for chalcogenide glasses?

Explain and give suitable references.

08 September 2016 4,191 2 View

What are important factors, those can be evaluated by dielectrical measurements?

Explain and give suitable explanation.

07 August 2016 1,412 3 View

It have been observed that density of defects states of thin films of chalcogenide glasses are more than bulk samples, why?

Explain with suitable references.

07 August 2016 6,860 2 View

What may be the grain size of nanocrystalline materials?

Explain and give correct explanation.

03 April 2016 6,791 4 View

What are the important factors that can be evaluated by dielectric measurements of nanocrystalline materials?

Explain and give the suitable formulae.

02 March 2016 8,864 4 View

How can we connect the study of light induced defects in chalcogenide glasses for solar cell applications?

Explain and give suitable explanation.

02 March 2016 4,600 4 View

Is it possible to prepare nano thin film from nanopowder?

Explain and give suitable explanation.

10 November 2015 1,762 7 View

Which type of compound does lamda max of 218 indicate in a uv-vis spectrum of a partially purified compound through column and TLC?

A crude extract of fungal culture using EtOH was subjected to column and TLC and partially purified compound was obtained. UV vis spectrum of the compound/s has max absorbance at 218nm. The...

11 August 2024 9,801 2 View

How can I measure the thickness of thin film by Uv-Vis?

06 August 2024 7,810 3 View

Why is TLC not a form of partition chromatography?

Why is TLC not a form of partition chromatography and paper chromatography not a form of absorption chromatography?

03 August 2024 7,035 3 View

Is there a good freeware software for photodocumentation of TLC?

I need something like Camag's VisionCat software for photodocumentation of TLCs. Could you recommend something?

31 July 2024 8,415 1 View

How to build my own lab made four point probe set up?

Hello, I'm trying to measure the conductivity of semiconductor films but since I don't have a commercial four point probe set up I would like to build one on my own in my lab. I have generators,...

30 July 2024 906 2 View

Does anybody know why my chitosan/pva/gelatin hydrogel dissolve in PBS?

My final research is about making chitosan/pva hydrogel for wound healing using gelatin as crosslinker. Last month, i made the thin film hydrogel and it turn well. It was okay. Last week, i make...

28 July 2024 2,794 6 View

Is it possible to manufacture polypropylene sheets using a biaxial process?

I know that films and other low-thickness laminated products are produced using biaxial orientation, but is there something similar for sheets with a thickness of around 6 mm? Or are they...

21 July 2024 1,559 1 View

How do you decide an optimal AC amplitude for non-faradaic electrochemical impedance spectroscopy?

I work with planar interdigitated electrodes (IDEs). The finger width and the spacing between the fingers are 5 micron. The surface of the IDEs is coated by a non-conductive polymer layer...

16 July 2024 5,031 1 View

Any suggestions to enhance the wettability and adhesion of fluorosilanes?

I am facing a difficulty to prepare the thin film which contains fluorine contained silica monomer, as we know F is highly reactive with low surface energy and it could be the reason of low...

09 July 2024 6,017 3 View

Can some indicate a technique - or approach - to measure the thickness of a 20µm film and thickness with water uptake?

Hi, I need to measure the real-time (or temporal intervals) thickness variation of a transparent material from dry to wet/humid conditions, however, I cannot use the following techniques: -...

08 July 2024 4,799 4 View

Yashika Sharma

Hello Dr. Anjani Kumar

The most feasible method for the preparation of chalcogenide thin films is RF Sputtering Technique. Although PLD (Pulsed Laser deposition) technique will also work for the same if appropriately used.

Tejaswini M L

Thermal Evaporation

Dr A. Kumar

Dear Dr. Anjani

The important aspect of film preparation in case of multicomponent glasses is to maintain same composition in film as in bulk. Ordinary thermal evaporation may lead to fractational effect. However, flash evaporation may be used to get films without fractational effects. One has to check the composition after film preparation. If this technique does not work, one can go sophisticated techniques like R.F. sputtering or pulse laser deposition to avoid fractational effect.