Εξειδίκευση τύπου :	Άρθρο σε επιστημονικό περιοδικό
Τίτλος:	Functionalized Zinc Porphyrins with Various Peripheral Groups for Interfacial Electron Injection Barrier Control in Organic Light Emitting Diodes
Δημιουργός/Συγγραφέας:	Verykios A. Papadakis M. Soultati A. Skoulikidou M.-C. Papaioannou G. Gardelis S. [EL] Πετσαλάκης, Ιωάννης Δ.[EN] Petsalakis, Ioannis D. [EL] Θεοδωρακοπούλου, Γιαννούλα[EN] Theodorakopoulos, Giannoula Petropoulos V. Palilis L.C. Fakis M. [EL] Βάϊνος, Νικόλαος  A.[EN] Vainos, Nikolaos A. Alexandropoulos D. Davazoglou D. Pistolis G. Argitis P. Coutsolelos A.G. Vasilopoulou M.
Εκδότης:	American Chemical Society
Ημερομηνία:	2018
Γλώσσα:	Αγγλικά
ISSN:	2470-1343
DOI:	10.1021/acsomega.8b01503
Περίληψη:	Here, we use a simple and effective method to accomplish energy level alignment and thus electron injection barrier control in organic light emitting diodes (OLEDs) with a conventional architecture based on a green emissive copolymer. In particular, a series of functionalized zinc porphyrin compounds bearing π-delocalized triazine electron withdrawing spacers for efficient intramolecular electron transfer and different terminal groups such as glycine moieties in their peripheral substitutes are employed as thin interlayers at the emissive layer/Al (cathode) interface to realize efficient electron injection/transport. The effects of spatial (i.e., assembly) configuration, molecular dipole moment and type of peripheral group termination on the optical properties and energy level tuning are investigated by steady-state and time-resolved photoluminescence spectroscopy in F8BT/porphyrin films, by photovoltage measurements in OLED devices and by surface work function measurements in Al electrodes modified with the functionalized zinc porphyrins. The performance of OLEDs is significantly improved upon using the functionalized porphyrin interlayers with the recorded luminance of the devices to reach values 1 order of magnitude higher than that of the reference diode without any electron injection/transport interlayer.
Τίτλος πηγής δημοσίευσης:	ACS Omega
Τόμος/Κεφάλαιο:	3
Τεύχος:	8
Σελίδες:	10008-10018
Θεματική Κατηγορία:	[EL] Φυσική και θεωρητική χημεία[EN] Physical and theoretical chemistry [EL] Φασματοσκοπία[EN] Spectroscopy
Αξιολόγηση από ομότιμους (peer reviewed):	Ναι
Κάτοχος πνευματικών δικαιωμάτων:	© 2018 American Chemical Society.
Όροι και προϋποθέσεις δικαιωμάτων:	All Open Access, Bronze, Green
Σημειώσεις:	College of Environmental Science and Forestry, State University of New York, ESF; European Commission, EC; European Social Fund, ESF This research has been co-financed by the European Union (European Social Fund−ESF) and Greek national funds through the Operational Program “Education and Lifelong Learning” of the National Strategic Reference Framework (NSRF)Research Funding Program: Thales. Investing in knowledge society through the European Social Fund.
Εμφανίζεται στις συλλογές:	Ινστιτούτο Θεωρητικής και Φυσικής Χημείας (ΙΘΦΧ) - Επιστημονικό έργο