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#1 2025-02-25 19:09:17

Abdulrahman Allangawi
Member
Registered: 2025-02-25
Posts: 4

Lifetimes of excited states in TDDFT

Dear All,

I am working on a project involving excitations via TDDFT calculations. As such, I want to calculate the lifetime of the excited states. Can this analysis be done using Multiwfn?

The following is an explanation of what is needed for the analysis, taken from a previous paper.


image.png

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#2 2025-02-25 19:36:20

sobereva
Tian Lu (Multiwfn developer)
From: Beijing
Registered: 2017-09-11
Posts: 1,927
Website

Re: Lifetimes of excited states in TDDFT

You can easily manually calculate lifetime via this equation: τ≈1.5/(f * ν^2), where τ is lifetime in s, ν is excitation energy in cm^-1, f is the oscillator strength (dimensionless).

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#3 2025-02-25 19:43:16

Abdulrahman Allangawi
Member
Registered: 2025-02-25
Posts: 4

Re: Lifetimes of excited states in TDDFT

Thanks a lot!

Do you have a reference in which they used this method? I want to cite them in my work.

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#4 2025-02-26 03:53:45

sobereva
Tian Lu (Multiwfn developer)
From: Beijing
Registered: 2017-09-11
Posts: 1,927
Website

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