TY - GEN
T1 - Why annealing processes affect the optical properties of Alq3 films and OLEDs
AU - Baldacchini, G.
AU - Baldacchini, T.
AU - Chiacchiaretta, P.
AU - Pode, R. B.
AU - Vincenti, M. A.
AU - Wang, Q. M.
N1 - Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2009
Y1 - 2009
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=70450064326&partnerID=8YFLogxK
U2 - 10.1149/1.3112631
DO - 10.1149/1.3112631
M3 - Conference contribution
AN - SCOPUS:70450064326
SN - 9781615673056
T3 - ECS Transactions
SP - 3
EP - 9
BT - ECS Transactions - Physics and Chemistry of Luminescent Materials, Including the 4th Symposium on Persistent Phosphors
PB - Electrochemical Society Inc.
T2 - Physics and Chemistry of Luminescent Materials, Including the 4th Symposium on Persistent Phosphors - 214th ECS Meeting
Y2 - 12 October 2008 through 17 October 2008
ER -