Εξειδίκευση τύπου :	Άρθρο σε επιστημονικό περιοδικό
Τίτλος:	Engineering of Porphyrin Molecules for Use as Effective Cathode Interfacial Modifiers in Organic Solar Cells of Enhanced Efficiency and Stability
Δημιουργός/Συγγραφέας:	Tountas M. Verykios A. Polydorou E. [EL] Καλτζόγλου, Ανδρέας[EN] Kaltzoglou, Andreas Soultati A. Balis N. Angaridis P.A. Papadakis M. Nikolaou V. Auras F. Palilis L.C. Tsikritzis D. Evangelou E.K. Gardelis S. Koutsoureli M. Papaioannou G. [EL] Πετσαλάκης, Ιωάννης Δ.[EN] Petsalakis, Ioannis D. Kennou S. Davazoglou D. Argitis P. Falaras P. Coutsolelos A.G. Vasilopoulou M.
Εκδότης:	American Chemical Society
Ημερομηνία:	2018
Γλώσσα:	Αγγλικά
ISSN:	1944-8244
DOI:	10.1021/acsami.8b03061
Άλλο:	PubMed ID: 29785853
Περίληψη:	In the present work, we effectively modify the TiO2 electron transport layer of organic solar cells with an inverted architecture using appropriately engineered porphyrin molecules. The results show that the optimized porphyrin modifier bearing two carboxylic acids as the anchoring groups and a triazine electron-withdrawing spacer significantly reduces the work function of TiO2, thereby reducing the electron extraction barrier. Moreover, the lower surface energy of the porphyrin-modified substrate results in better physical compatibility between the latter and the photoactive blend. Upon employing porphyrin-modified TiO2 electron transport layers in PTB7:PC71BM-based organic solar cells we obtained an improved average power conversion efficiency up to 8.73%. Importantly, porphyrin modification significantly increased the lifetime of the devices, which retained 80% of their initial efficiency after 500 h of storage in the dark. Because of its simplicity and efficacy, this approach should give tantalizing glimpses and generate an impact into the potential of porphyrins to facilitate electron transfer in organic solar cells and related devices.
Τίτλος πηγής δημοσίευσης:	ACS Applied Materials and Interfaces
Τόμος/Κεφάλαιο:	10
Τεύχος:	24
Σελίδες:	20728-20739
Θεματική Κατηγορία:	[EL] Φυσική και θεωρητική χημεία[EN] Physical and theoretical chemistry
Λέξεις-Κλειδιά:	anchoring groups electron transfer molecular dipole moment organic solar cells porphyrin TiO2 triazine
Αξιολόγηση από ομότιμους (peer reviewed):	Ναι
Κάτοχος πνευματικών δικαιωμάτων:	© 2018 American Chemical Society.
Σημειώσεις:	5001552; European Commission, EC: 229927, FP7-REGPOT-2008-1; State Scholarships Foundation, IKY; University of Crete, UoC; European Social Fund, ESF The project “Implementing advanced interfacial engineering strategies for highly efficient hybrid solar cells” (Acronym: IMAGINE-HYSOL) is implemented under the “ARISTEIA II” Action of the “Operational Programme Education and Lifelong Learning” and is co-funded by the European Social Fund (ESF) and National Resources. A.G.C. acknowledges the European Commission (FP7-REGPOT-2008-1, Project BIOSOLENUTI No. 229927) and the Special Research Account of the University of Crete. A.S. acknowledges an IKY fellowship co-financed by the European Social Fund-ESF and Greek national funds under the “Strengthening Post-Doctoral Research (MIS: 5001552)” through the Operational Program “National Human Resources Development Program, Education and Lifelong Learning” (priority axes 6, 8, 9).
Εμφανίζεται στις συλλογές:	Ινστιτούτο Θεωρητικής και Φυσικής Χημείας (ΙΘΦΧ) - Επιστημονικό έργο