A solution-processable electron acceptor based on diketopyrrolopyrrole and naphthalenediimide motifs for organic solar cells |
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| Authors: | Hemlata Patil Akhil Gupta Ante Bilic Sidhanath V. Bhosale Sheshanath V. Bhosale |
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| Affiliation: | 1. School of Applied Sciences, RMIT University, GPO Box 2476V, Melbourne, Victoria 3001, Australia;2. Department of Materials Engineering, Faculty of Engineering, Monash University, Wellington Road, Clayton, Victoria 3800, Australia;3. CSIRO Computational Informatics, Private Bag 33, Clayton, South Victoria 3169, Australia;4. Polymers and Functional Material Division, CSIR-Indian Institute of Chemical Technology, Hyderabad 50060, AP, India |
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| Abstract: | A novel, solution-processable small molecular electron acceptor (HP1) based on diketopyrrolopyrrole and naphthalenediimide fragments was designed and synthesized via a Stille coupling reaction, characterized by spectroscopic means, and exhibited excellent solubility and thermal stability. HP1 exerted strong and very broad absorption tailing into the near infra-red region, with appropriate energy levels matching with the archetypal electron donor, poly(3-hexylthiophene) (P3HT), and afforded 1.02% power conversion efficiency with a high open-circuit voltage (1.05 V) when tested in solution-processable bulk-heterojunction devices. |
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| Keywords: | Diketopyrrolopyrrole Naphthalenediimide Bulk-heterojunction solar cells Lypophilic alkyl chains |
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