M Burhanuz Zaman

9 Questions 19 Answers 0 Followers

Questions related from M Burhanuz Zaman

How different sulphur precursors modify the pH of an alkaline solution during hydrothermal synthesis of chalcogenides?

I am using different sulphur precursors in an alkaline medium for chalcogenide synthesis and at the end of the reaction i got decants with different pH values. How these precursors change the pH...

01 January 2020 311 1 View

In dye degradation, if the absorption peaks of the dye and catalyst lie in two different regions of solar spectrum, how to decide light source?

Illumination source has mainly to create excitons in the catalyst, hence mainly depends on the region of its band gap energy (hv>= Eg). I want to confirm whether if the absorption regions of...

07 July 2018 7,293 2 View

What are the possible ways to increase the crystallite size in nanomaterials?

I am fabricating solar cells from earth abundant materials using sol gel method. In order to increase the efficiency i need to improve the crystallite size as in accord with Rodriguez - Lazcano.

10 October 2017 10,068 1 View

Why high pressure corresponds to lower increase in energy in comparison to temperature?

Need an explaination in solvothermal synthesis of nanoparticles .what is the relation between temperature and pressure with energy?

10 October 2017 8,689 3 View

How to find which unit cell of a given phase is present?

i am getting cubic phase for Cu2SnS3 nanoparticles, i want to find out which Bravis lattice of cubic crystal system it posseses

09 September 2017 3,480 5 View

Why we get different intensity peaks in XRD?

i want to know the exact cause why along certain prefferred directions the X Rays are highly diffracted.

09 September 2017 8,619 13 View

How to remove pin holes in dropcasted thin films made from ink?

i am getting a lot of pin holes while fabricating dropcasted thin films from the corresponding inks. which parameter should i control to avoid these pin holes?

09 September 2017 5,487 0 View

I want to know how to calculate the average crystallite size for multiple XRD peaks of a compound?

i am getting crystallite size in the range 4 nm-20 nm corresponding to different XRD peaks of the sample using Scherrer's formula. What to say about average crystallite size?

01 January 1970 9,700 11 View

Is there any relation between particle size, grain size and crystallite size?

actually i am getting particle size and crystallite sizes almost in equal ranges for thin films, is it possible? if so please mention.

01 January 1970 8,295 13 View