In:
European Journal of Organic Chemistry, Wiley, Vol. 2021, No. 33 ( 2021-09-07), p. 4620-4629
Abstract:
New star‐shaped non‐fullerene acceptors (5 Z ,5′ Z ,5′′ Z )‐5,5′,5′′‐((benzo[1,2‐ b : 3,4‐ b′ : 5,6‐ b′′ ]trithiophene‐2,5,8‐triyltris(4‐octylthiophene‐5,2‐diyl))tris(methaneylylidene))tris(3‐octyl‐2‐thioxothiazolidin‐4‐one) ( 1 : BTT‐OT‐ORD) and 2,2′,2′′‐((5 Z ,5′ Z ,5′′ Z )‐((benzo[1,2‐ b : 3,4‐ b′ : 5,6‐ b′′ ]trithiophene‐2,5,8‐triyltris(4‐octylthiophene‐5,2‐diyl))tris(methaneylylidene))tris(3‐octyl‐4‐oxothiazolidine‐5,2‐diylidene))trimalononitrile ( 2 : BTT‐OT‐OTZDM) with a benzotrithiophene core, alkyl‐thiophen units, and acceptor units were designed and synthesized. The HOMO‐LUMO levels of 1 and 2 were determined by photoemission spectroscopy and UV‐Vis absorption spectroscopy. Binary blend and ternary blend bulk heterojunction (BHJ) organic solar cells with non‐fullerene acceptors 1 and 2 were fabricated with the inverted device structures of glass/ITO/ZnO/active_layer/MoO 3 /Ag. Both binary blend BHJ solar cells with 1 and 2 show lower J SC and larger V OC values than P3HT : PCBM solar cells. On the other hand, ternary blend BHJ organic solar cells, including 10 % of 1 , exhibited a larger power conversion efficiency than P3HT : PCBM solar cells because the J SC value was largely improved.
Type of Medium:
Online Resource
ISSN:
1434-193X
,
1099-0690
DOI:
10.1002/ejoc.v2021.33
DOI:
10.1002/ejoc.202100178
Language:
English
Publisher:
Wiley
Publication Date:
2021
detail.hit.zdb_id:
1475010-7
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