Open AccessDevelopment of a High-Performance Donor–Acceptor Conjugated Polymer: Synergy in Materials and Device Optimization
Author(s) -
Mei Gao,
Jegadesan Subbiah,
Paul B. Geraghty,
Ming Chen,
Balaji Purushothaman,
Xiwen Chen,
Tianshi Qin,
Doojin Vak,
Fiona H. Scholes,
Scott E. Watkins,
Melissa A. Skidmore,
Gerard J. Wilson,
Andrew B. Holmes,
David J. Jones,
Wallace W. H. Wong
Publication year - 2016
Publication title -
chemistry of materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.741
H-Index - 375
eISSN - 1520-5002
pISSN - 0897-4756
DOI - 10.1021/acs.chemmater.6b01194
Subject(s) - conjugated system , polymer , materials science , acceptor , nanotechnology , chemical engineering , combinatorial chemistry , chemistry , engineering , composite material , condensed matter physics , physics
The development of a high-performance polymer PBDT-BT for bulk heterojunction solar cell devices is summarized. The polymer was first synthesized by Stille polycondensation, and solar cell devices in conventional geometry were optimized through the use of a lithium salt cathode interlayer reaching 6% power conversion efficiency. Improvements were made to the synthesis of the polymer using Suzuki polycondensation giving high-molecular-weight material in the Mn = 100 kg/mol range. Further device optimization in inverted geometry gave power conversion efficiency of over 9%. The synthesis scalability as well as the batch-to-batch reproducibility of the polymer were extensively investigated.
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