Shahin Khademinia

8 Questions 37 Answers 0 Followers

Questions related from Shahin Khademinia

Direct and indirect band gap energies?

Is it possible for a semiconductor to have both direct and indirect optical band gaps? can an indirect band gap energy be smaller than that of direct band gap?

08 August 2017 8,051 4 View

Methylsilanetriol or potassium salt of the material synthesis method. Who can give me data about the synthesis of methyl silanetriol or K3(CH3SiO3)?

Who can give me data about the synthesis of methyl silanetriol or K3(CH3SiO3)?

12 December 2016 8,160 2 View

How can i use tio2 nanoparticle as an additive to paint for anti pollution application?

TiO2 nanomaterial addition to paint. As a catalyst to decompose organic pollution.

12 December 2016 8,679 6 View

What is the relation of X2 and R factors in fullprof program?

Which factor confirm the true structure?

10 October 2015 3,282 0 View

What is Rf in fullprof program?

Also, what should be the range of the factor for an analysis in the program?

10 October 2015 2,455 0 View

How can I calculate band gap using UV-Vis DRS spectrum?

It seems that there should be a relation between reflectance and absorption until we can calculate band gap. I don't know the relation. Please give me formula to calculate it using UV-Vis DRS...

10 October 2015 9,415 7 View

Can anyone help me to determine the crystal structure of a compound Bi2Mn2O7 via reitveld analysis? I attached a PXRD file (txt)

I have used a reference from Abdul halim shaari

07 July 2014 1,506 22 View

How can I characterize an unknown PXRD pattern when there is no reference according to it?

The peaks are sharp and the baseline is good.

03 March 2014 8,523 3 View