@article {Tountas201820728,
	title = {Engineering of Porphyrin Molecules for Use as Effective Cathode Interfacial Modifiers in Organic Solar Cells of Enhanced Efficiency and Stability},
	journal = {ACS Applied Materials and Interfaces},
	volume = {10},
	number = {24},
	year = {2018},
	note = {cited By 11},
	pages = {20728-20739},
	abstract = {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. {\textcopyright} 2018 American Chemical Society.},
	doi = {10.1021/acsami.8b03061},
	url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85047456196\&doi=10.1021\%2facsami.8b03061\&partnerID=40\&md5=5e951c596d3d005801dd18a3fe692040},
	author = {Tountas, M. and Verykios, A. and Polydorou, E. and Kaltzoglou, A. and Soultati, A. and Balis, N. and Angaridis, P.A. and Papadakis, M. and Nikolaou, V and Auras, F. and Palilis, L.C. and Tsikritzis, D. and Evangelou, E.K. and Gardelis, S. and Koutsoureli, M. and Papaioannou, G. and Petsalakis, I.D. and Kennou, S. and Davazoglou, D and Argitis, P and P. Falaras and Coutsolelos, A.G. and Vasilopoulou, M}
}
