lifetime comparison
Posted: Thu Oct 10, 2013 4:53 pm
Dear friends
I know that Yambo can calculate quasiparticle lifetime which is directly comparable with 2PPE experimental results. But I don't know how it relates to experiments like Transient photoconductance measurements which give the lifetime of photocarriers . Is it same as quasiparticle lifetime or it is comarable with excitonic lifetime? or with recombination lifetime?
In special case:
We all know that people are interested in enhancement of activity of TiO2 for both anatase and rutile phases which is determined by e-h pair lifetime . For example the e-h pair lifetime of anatase is 10 ns in Transient photoconductance measurment . is e-h pair lifetime similar with exciton lifetime or not? Is it any way to compare e-h lifetime data with quasiparticle lifetime obtained with yambo?
In other word, is it possible to determine the reacitvity of TiO2 with quasiparticle lifetime or not?
And finally, does yambo calculate exitonic lifetime ? If yes, how?
Any help is greatly appreciated.
Ali Kazempour, Physics Dept, PNU university, Tehran , Iran
I know that Yambo can calculate quasiparticle lifetime which is directly comparable with 2PPE experimental results. But I don't know how it relates to experiments like Transient photoconductance measurements which give the lifetime of photocarriers . Is it same as quasiparticle lifetime or it is comarable with excitonic lifetime? or with recombination lifetime?
In special case:
We all know that people are interested in enhancement of activity of TiO2 for both anatase and rutile phases which is determined by e-h pair lifetime . For example the e-h pair lifetime of anatase is 10 ns in Transient photoconductance measurment . is e-h pair lifetime similar with exciton lifetime or not? Is it any way to compare e-h lifetime data with quasiparticle lifetime obtained with yambo?
In other word, is it possible to determine the reacitvity of TiO2 with quasiparticle lifetime or not?
And finally, does yambo calculate exitonic lifetime ? If yes, how?
Any help is greatly appreciated.
Ali Kazempour, Physics Dept, PNU university, Tehran , Iran