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Title: Anthradithiophene (ADT)‐Based Polymerized Non‐Fullerene Acceptors for All‐Polymer Solar Cells
Abstract

Realizing efficient all‐polymer solar cell (APSC) acceptors typically involves increased building block synthetic complexity, hence potentially unscalable syntheses and/or prohibitive costs. Here we report the synthesis, characterization, and implementation in APSCs of three new polymer acceptorsP1P3using a scalable donor fragment, bis(2‐octyldodecyl)anthra[1,2‐b : 5,6‐b’]dithiophene‐4,10‐dicarboxylate (ADT) co‐polymerized with the high‐efficiency acceptor units, NDI, Y6, and IDIC. All three copolymers have comparable photophysics to known polymers; however, APSCs fabricated by blendingP1,P2andP3with donor polymersPM5andPM6exhibit modest power conversion efficiencies (PCEs), with the championP2‐basedAPSCachieving PCE=5.64 %. Detailed morphological and microstructural analysis by AFM and GIWAXS reveal a non‐optimal APSC active layer morphology, which suppresses charge transport. Despite the modest efficiencies, these APSCs demonstrate the feasibility of usingADTas a scalable and inexpensive electron rich/donor building block for APSCs.

 
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PAR ID:
10440284
Author(s) / Creator(s):
 ;  ;  ;  ;  ;  ;  ;  ;  ;  ;  ;  
Publisher / Repository:
Wiley Blackwell (John Wiley & Sons)
Date Published:
Journal Name:
Chemistry – A European Journal
Volume:
29
Issue:
45
ISSN:
0947-6539
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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