First example of N-shaped dipyrrolo[2,3-b:2′,3′-e]pyrazine-2,6(1H,5H)-dione based small acceptor materials: Role of cyano (−C≡N) free guest acceptors for developing environmental friendly organic solar cells
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Eur. Phys. J. Plus, 137 4 (2022) 456
Published online: 11 April 2022
DOI: 10.1140/epjp/s13360-022-02595-w