Εξειδίκευση τύπου :	Άρθρο σε επιστημονικό περιοδικό
Τίτλος:	Revealing the structural effects of non-fullerene acceptors on the performances of ternary organic photovoltaics under indoor light conditions
Δημιουργός/Συγγραφέας:	Singh, Ranbir Duan, Tainan Kan, Zhipeng [EL] Χώχος, Χρήστος[EN] Chochos, Christos Kini, Gururaj P. Kumar, Manish Park, Jongdeok Lee, Jaewon Lee, Jae-Joon
Εκδότης:	Elsevier
Ημερομηνία:	2020
Γλώσσα:	Αγγλικά
ISSN:	22112855
DOI:	10.1016/j.nanoen.2020.104934
Περίληψη:	Strong absorption and tunable energy levels of non-fullerene small molecules offer enormous potential for organic photovoltaics (OPVs) to harvest energy from various light sources. However, the selection of suitable materials with an effective optical, electrical, and compatible morphological properties remains a big challenge. In this work, we demonstrated the effect of employing different non-fullerene acceptors (NFAs) as a crystalline modulator in efficient ternary-blend OPVs for indoor applications. Two different types of NFAs with different chemical structures and crystallinity, i.e. amorphous (PDI2 and PDI4) and semi-crystalline (IDT and IDDT), were introduced as the third component into a host OD:PC71BM binary-blend system. The optimized ternary-blends exhibited the power conversion efficiencies of 20.54% (OD:PC71BM:PDI2), 18.27% (OD:PC71BM:PDI4), 21.13% (OD:PC71BM:IDT), and 19.05% (OD:PC71BM:IDDT), respectively, under indoor light source (1000 lux, LED lamp) thereby completely outperforming the host binary-blend (14.15%). The variation of the OPV performance was investigated and correlated with the photophysical and morphological properties of the corresponding NFAs. Particularly, the addition of semi-crystalline IDT among other NFAs enabled the formation of compact nanoscale morphology with well-dispersion and smaller π-π stacking distance, thereby resulting in the efficient charge separation, the faster charge carrier transport, the reduced energetic disorder, and the suppression of non-geminate recombination. Overall, this study indicated that the addition of the third component with appropriate morphological properties can effectively improve the OPV performance under indoor light conditions.
Τίτλος πηγής δημοσίευσης:	Nano Energy
Τόμος/Κεφάλαιο:	75
Σελίδες:	104934
Θεματική Κατηγορία:	[EL] Χημική Βιολογία[EN] Chemical Biology [EL] Χημεία (Γενικά)[EN] Chemistry (General) [EL] Χημική τεχνολογία[EN] Chemical technolgy
Λέξεις-Κλειδιά:	Organic photovoltaics (OPVs) Non-fullerene acceptors (NFAs) Indoor lighting conditions Photovoltaics
Κάτοχος πνευματικών δικαιωμάτων:	Copyright © 2020 Elsevier Ltd. All rights reserved.
Ηλεκτρονική διεύθυνση στον εκδότη (link):	https://www.sciencedirect.com/science/article/abs/pii/S2211285520304912?via%3Dihub
Ηλεκτρονική διεύθυνση περιοδικού (link) :	https://www.sciencedirect.com/journal/nano-energy
Εμφανίζεται στις συλλογές:	Ινστιτούτο Χημικής Βιολογίας - Επιστημονικό έργο