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- Title
Anthradithiophene (ADT)‐Based Polymerized Non‐Fullerene Acceptors for All‐Polymer Solar Cells.
- Authors
Forti, Giacomo; Pankow, Robert M.; Qin, Fei; Cho, Yongjoon; Kerwin, Brendan; Duplessis, Isaiah; Nitti, Andrea; Jeong, Seonghun; Yang, Changduk; Facchetti, Antonio; Pasini, Dario; Marks, Tobin J.
- 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 acceptors P1–P3 using 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 blending P1, P2 and P3 with donor polymers PM5 and PM6 exhibit modest power conversion efficiencies (PCEs), with the champion P2‐based APSC achieving 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 using ADT as a scalable and inexpensive electron rich/donor building block for APSCs.
- Subjects
SOLAR cells; PHOTOVOLTAIC power systems; POLYMERS; COPOLYMERS
- Publication
Chemistry - A European Journal, 2023, Vol 29, Issue 45, p1
- ISSN
0947-6539
- Publication type
Article
- DOI
10.1002/chem.202300653