Abstract
Local lattice relaxation about an excited molecule leads to the appearance of vibrational fine structure in the electronic absorption spectrum. To study the linewidth of the very sharp zero phonon line two types of coupling of the electron to the lattice are considered. A strong coupling, which causes the lattice relaxation and a weaker coupling of the lattice to the excition transfer matrix element. The latter one leads to phonon scattering processes within the exciton band and becomes important for the linewidth at low temperatures. It can be seen that the strong coupling tends to narrow the linewidth produced by the weak coupling mechanism. The analogy to motional narrowing as known from magnetic resonance can be drawn.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
