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

    Abdulrahman Allangawi
    Member
    Registered: 2025-02-25
    Posts: 6

    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: 2,011
    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: 6

    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: 2,011
    Website

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