Εξειδίκευση τύπου :	Άρθρο σε επιστημονικό περιοδικό
Τίτλος:	High performance conjugated terpolymers as electron donors in nonfullerene organic solar cells
Δημιουργός/Συγγραφέας:	Paleti, Sri Harish Kumar Gasparini, Nicola [EL] Χώχος, Χρήστος[EN] Chochos, Christos Baran, Derya
Ημερομηνία:	2020
Γλώσσα:	Αγγλικά
ISSN:	2050-7526 2050-7534
DOI:	10.1039/D0TC01379J
Περίληψη:	We demonstrate the synthesis of three p-conjugated terpolymers based on the nonconventional molecular design strategy D1–D2–D1–A comprising two different multi-fused ladder-type arene electron donating moieties [(4,40-bis(2-ethylhexyl)dithieno[3,2-b:20,30-d]silole)-2,6-diyl (DTS) as D1 and thienylsubstituted benzo[1,2-b:4,5-b0 ]dithiophene (BDT) derivatives as D2] and an electron withdrawing unit [5,6-difluoro-2,1,3-benzothiadiazole (DFBT) as A]. The implementation of these materials as electron donors is explored in high performance near infrared non-fullerene acceptor (NFA) organic solar cells utilizing the benchmark low bandgap NFA IEICO-4F. The triple bulk heterojunction blend systems provide the basis for a detailed structure–property–performance relationship in terms of BDT’s thienyl substitution (alkyl, alkylthio and fluoro) by investigating the correlations between the molecular energy level alignments, performance, and device physics of OSCs. The alkylthienyl-BDT based p-conjugated terpolymer [P(DTS-BDT-DFBT)] exhibits the best photovoltaic performance delivering a power conversion efficiency of 10% with a high short circuit current density of 22.7 mA cm2. The combination of optoelectronicmeasurements and morphological analyses revealed the suppression of field dependent charge recombination in P(DTS-BDT-DFBT):IEICO-4F as compared to alkylthiothienyl-BDT [P(DTS-BDTS-DFBT):IEICO-4F] and fluoro-substituted thienyl-BDT [P(DTS-BDTF-DFBT):IEICO-4F] based OSC devices.
Τίτλος πηγής δημοσίευσης:	Journal of Materials Chemistry C
Τόμος/Κεφάλαιο:	8
Τεύχος:	38
Σελίδες:	13422--13429
Θεματική Κατηγορία:	[EL] Χημεία (Γενικά)[EN] Chemistry (General) [EL] Φυσική και θεωρητική χημεία[EN] Physical and theoretical chemistry [EL] Χημική τεχνολογία[EN] Chemical technolgy
Λέξεις-Κλειδιά:	Synthesis Optoelectronic porperties Photovoltaics Organic solar cells Electron donors
Κάτοχος πνευματικών δικαιωμάτων:	Copyright © 2020 The Royal Society of Chemistry
Ηλεκτρονική διεύθυνση στον εκδότη (link):	https://pubs.rsc.org/en/content/articlelanding/2020/TC/d0tc01379j
Ηλεκτρονική διεύθυνση περιοδικού (link) :	https://pubs.rsc.org/en/journals/journalissues/tc#!recentarticles&adv
Εμφανίζεται στις συλλογές:	Ινστιτούτο Χημικής Βιολογίας - Επιστημονικό έργο