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Naphthodifuran-based zigzag-type polycyclic arene with conjugated side chains for efficient photovoltaics

Ladder-type conjugated structures with rigid and coplanar molecular frameworks feature longer effective conjugation, affirmative optoelectronic properties and strong intermolecular π–π interactions, which are ideal characteristics for organic photovoltaics. Here, a new “zigzag” angular-fused naphtho... Full description

Contained in: PCCP. Physical Chemistry Chemical Physics - An International Journal Vol. 19, No. 22 (2017), p. 14289-14295
Journal Title: PCCP. Physical Chemistry Chemical Physics - An International Journal
Fulltext access:
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Links: Additional Link (dx.doi.org)
Additional Keywords: ADDITIV
BANDLUECKE
BUTTERSAEUREESTER
COPOLYMER
ELEKTRON
KREUZKUPPLUNG
MODUL:BAUGRUPPE
PHOTOVOLTAIK
SOLARZELLE
STOFFGEMISCH
DOI: 10.1039/c7cp02283b
Notes: Copyright: Metadaten: TEMA, Copyright WTI-Frankfurt eG
Copyright: (C) Alle Rechte beim Herausgeber
Physical Description: 7 Seiten, 58 Quellen
ID (e.g. DOI, URN): 10.1039/c7cp02283b
PPN (Catalogue-ID): WTI005002338
Note: WTI TEMA DB
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520 |a Ladder-type conjugated structures with rigid and coplanar molecular frameworks feature longer effective conjugation, affirmative optoelectronic properties and strong intermolecular π–π interactions, which are ideal characteristics for organic photovoltaics. Here, a new “zigzag” angular-fused naphthodifuran (zNDF) based on alkoxyphenyl side chains was designed and synthesized. The distannylated zNDF building block was copolymerized with 4,7-di(5-bromothiophen-2-yl)-5,6-dioctyloxybenzo[c][1,2,5]thiadiazole and 5,8-bis(5-bromothiophen-2-yl)-2,3-bis(4-(2-ethylhexyloxy)-3-fluorophenyl)-6,7-difloroquinoxaline (Br-BT and Br-ffQx) acceptor units by Stille cross coupling reaction to form two new medium bandgap donor–acceptor polymers PzNDFP-BT and PzNDFP-ffQx, respectively. The photovoltaic properties of the copolymers blended with [6,6]-phenyl-C71-butyric acid methyl ester (PC71BM) as an electron acceptor were investigated. A 6.9% efficiency was achieved from the single device based on the PzNDFP-BT : PC71BM (1 : 1.5, w/w) blend film with a 0.25% 1,8-diiodooctane (DIO) additive, which is among the highest efficiency for zNDF-based polymer solar cells. [Copyright Royal Society of Chemistry. Reproduced with permission.] 
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653 4 |a BANDLUECKE 
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