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About This Item
Empirical Formula (Hill Notation):
C82H86Cl4N8O2S5
Molecular Weight:
1517.75
UNSPSC Code:
12352101
NACRES:
NA.23
Related Categories
General description
Synonym: 2,2′-((2Z,2′Z)-((12,13-bis(2-ethylhexyl)-3,9-diundecyl-12,13-dihydro-[1,2,5]thiadiazolo[3,4-e]thieno[2",3":4′,5′]-thieno[2′,3′:4,5]pyrrolo[3,2-g]thieno[2′,3′:4,5]thieno[3,2-b]indole-2,10-diyl)bis(methanylylidene))bis(5,6-dichloro-3-oxo-2,3-dihydro-1H-indene-2,1-diylidene))dimalononitrile
Application
BTP-4Cl is a high performance, low bandgap, non-fullerene accpetor (NFA). It is the chlorinated derivative of the fused benzothiadiazole-based NFA, Y6. It offer high power conversion efficiency (PCE) when pairing with p-type polymer PM6. A 9 mm2 single junction device of this blend provided a PCE of 16.5% at thickness of ~ 100nm, and provided a PCE of >13% at a thickness of ~300 nm (for the active layer). An impressive PCE of >15% was reached for this blend with a 1 cm2 active layer. In general, Y7 showed improved performances over Y6, mainly due to its highest photoluminescence, lower non-radiative energy loss, and a higher Voc of 0.867 V vs 0.834 V for Y6.
Y7 is a highly conjugated organic semiconductor, electron deficient due to its structure and hence suitable for use as a n-type non-fullerene electron acceptor(NFA) in OPV devices. It has an absorption range that extends to the near infrared (NIR) and has demonstrated a power conversion efficiency (PCE) up to15.7% with PBDB-T-2F (PM6) as the polymer donor.
WGK
WGK 3
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
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Yong Cui et al.
Nature communications, 10(1), 2515-2515 (2019-06-09)
Broadening the optical absorption of organic photovoltaic (OPV) materials by enhancing the intramolecular push-pull effect is a general and effective method to improve the power conversion efficiencies of OPV cells. However, in terms of the electron acceptors, the most common
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