Development of a High-Performance Donor–Acceptor Conjugated Polymer: Synergy in Materials and Device Optimization

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• 作者：Mei Gao ; Jegadesan Subbiah ; Paul B. Geraghty ; Ming Chen ; Balaji Purushothaman ; Xiwen Chen ; Tianshi Qin ; Doojin Vak ; Fiona H. Scholes ; Scott E. Watkins ; Melissa Skidmore ; Gerard J. Wilson ; Andrew B. Holmes ; David J. Jones ; Wallace W. H. Wong
• 刊名：Chemistry of Materials
• 出版年：2016
• 出版时间：May 24, 2016
• 年：2016
• 卷：28
• 期：10
• 页码：3481-3487
• 全文大小：355K
• 年卷期：0
• ISSN：1520-5002

文摘

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 M_n = 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.