Abstract
We compare picosecond time-resolved photoluminescence spectra of thin polycrystalline films of quaterthiophene (4T) vapour deposited on two different substrates: highly oriented pyrolytic graphite (HOPG) and glass. At zero time delay, both films show the same highly resolved vibrational fine structure as isolated 4T molecules. The fine structure remains over time on HOPG, but vanishes within the first 100 ps on glass and is replaced by emission from two luminescent traps. The results explain the line broadening in time-integrated (cw) spectra and yield information on the luminescence quenching in polycrystalline organic films.
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.
