Issac Nelson

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Questions related from Issac Nelson

How to estimate Internal photon conversion efficiency from Photo-luminescence Spectra? or What is the appropriate way to estimate it?

We have observed quenching in luminescence intensity for our prepared thin films. How to calculate Internal photon conversion efficiency (IPEC)? Does quantum yield is necessary to measure IPEC?

12 December 2018 2,943 3 View

In the time resolved emission spectroscopy, how to find the lifetime from the graph?

I have came across lifetime measurement by calculating FWHM from the graph plotted for Time Vs Prompt. But how to calculate t1 t2 t3 from such graphs. I am attaching a paper with this question

11 November 2017 305 3 View

What is the relation between annealing and reduction in grain size?

The grain size of the as deposited film was higher when compared to lower temperature annealed films and found to increase on 350C annealing. Material is copper based alloy..

07 July 2017 1,329 12 View

What is the signficance of W-H plot over scherrer equation in terms of Strain crystallite size calculations?

I have seen papers estimating crystallite size using scherrer formula and strain line broadening using W-H plot. whats the reason behind it?

03 March 2017 2,707 7 View

How to the calculte the dipole moment of ground state by using the formula given below?

where S1= 164 cm-1 S2= -400 cm-1 a= 3.64 angstron h plancks constant c velocity of light Answer should be expressed in debye (D) Help needed for the calculation.

11 November 2016 2,154 1 View