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 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.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jul 18, 2023
- Source ID
- 10.1002/chem.202300653
Entities
People
- Andrea Nitti
- Antonio Facchetti
- Brendan Kerwin
- Changduk Yang
- Dario Pasini
- Fei Qin
- Giacomo Forti
- Isaiah D. Duplessis
- Robert M. Pankow
- Seonghun Jeong
- Tobin J. Marks
- Yongjoon Cho
Organizations
- Georgia Tech
- Ministry of Education, Universities and Research
- National Institute of Standards and Technology
- National Science Foundation
- Northwestern University
- Office of Naval Research
- Ulsan National Institute of Science and Technology
- United States Department of Energy
- University of Pavia