The Bulk Heterojunction in Organic Photovoltaic, Photodetector, and Photocatalytic Applications
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Adv Mater Bulk Heterojunctuion HoF Revised Final CLEAN.pdf
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Accepted manuscript
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ArticleKAUST Department
Chemical Science ProgramPhysical Science and Engineering (PSE) Division
KAUST Solar Center (KSC)
KAUST Grant Number
OSR-2015-CRG4-2572Date
2020-08-05Online Publication Date
2020-08-05Print Publication Date
2020-09Embargo End Date
2021-08-05Submitted Date
2020-03-12Permanent link to this record
http://hdl.handle.net/10754/664558
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Organic semiconductors require an energetic offset in order to photogenerate free charge carriers efficiently, owing to their inability to effectively screen charges. This is vitally important in order to achieve high power conversion efficiencies in organic solar cells. Early heterojunction-based solar cells were limited to relatively modest efficiencies (<4%) owing to limitations such as poor exciton dissociation, limited photon harvesting, and high recombination losses. The development of the bulk heterojunction (BHJ) has significantly overcome these issues, resulting in dramatic improvements in organic photovoltaic performance, now exceeding 18% power conversion efficiencies. Here, the design and engineering strategies used to develop the optimal bulk heterojunction for solar-cell, photodetector, and photocatalytic applications are discussed. Additionally, the thermodynamic driving forces in the creation and stability of the bulk heterojunction are presented, along with underlying photophysics in these blends. Finally, new opportunities to apply the knowledge accrued from BHJ solar cells to generate free charges for use in promising new applications are discussed.Citation
Wadsworth, A., Hamid, Z., Kosco, J., Gasparini, N., & McCulloch, I. (2020). The Bulk Heterojunction in Organic Photovoltaic, Photodetector, and Photocatalytic Applications. Advanced Materials, 2001763. doi:10.1002/adma.202001763Sponsors
This article is part of the Advanced Materials Hall of Fame article series, which recognizes the excellent contributions of leading researchers to the field of materials science. The research reported in this publication was supported by funding from King Abdullah University of Science and Technology Office of Sponsored Research (OSR) under Award Nos. OSR-2018-CARF/CCF-3079, OSR-2015-CRG4-2572, and OSR -4106 CPF2019. The authors acknowledge EC FP7 Project SC2 (610115), EC H2020 (643791), and EPSRC Projects EP/G037515/1, EP/M005143/1, and EP/L016702/1. Figure 11 was created by Heno Hwang, scientific illustrator at King Abdullah University of Science and Technology (KAUST).Publisher
WileyJournal
Advanced MaterialsPubMed ID
32754970Additional Links
https://onlinelibrary.wiley.com/doi/abs/10.1002/adma.202001763ae974a485f413a2113503eed53cd6c53
10.1002/adma.202001763
Scopus Count
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