Why annealing processes affect the optical properties of Alq

G. Baldacchini, T. Baldacchini, P. Chiacchiaretta, R.B. Pode, M.A. Vincenti, Q.-M. Wang

Research output: Contribution to conferencePaper

4 Citations (Scopus)

Abstract

Organic light emitting diodes, OLEDs, have been so much improved in the last two decades that they are being currently used in commercial applications for displays and lighting. Among many improving technologies, thermal treatments affect greatly their performances. In case the small molecule Alq3 is the active material, it was never understood why and how the temperature could have played such an important role. Now, we have discovered that such molecules tend to aggregate themselves in morphological states which are very much sensible to annealing processes, with the result of improved emission efficiency and lifetime of Alq3 thin films. Moreover, the latter ones are described by a four components model, FCM, which has been validated by degradation experiments during 6 years, a world record in its own.
Original languageEnglish
Publication statusPublished - 2009
Externally publishedYes
EventPhysics and Chemistry of Luminescent Materials, Including the 4th Symposium on Persistent Phosphors - 214th ECS Meeting - , United States
Duration: 1 Jan 2009 → …

Conference

ConferencePhysics and Chemistry of Luminescent Materials, Including the 4th Symposium on Persistent Phosphors - 214th ECS Meeting
CountryUnited States
Period1/1/09 → …

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All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Baldacchini, G., Baldacchini, T., Chiacchiaretta, P., Pode, R. B., Vincenti, M. A., & Wang, Q-M. (2009). Why annealing processes affect the optical properties of Alq. Paper presented at Physics and Chemistry of Luminescent Materials, Including the 4th Symposium on Persistent Phosphors - 214th ECS Meeting, United States.