Molecular-Reductant-Induced Control of a Graphene–Organic Interface for Electron Injection
Author(s): Zhang, Fengyu; Klein, Chen; Longhi, Elena; Barlow, Stephen; Marder, Seth R; et al
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Full metadata record
DC Field | Value | Language |
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dc.contributor.author | Zhang, Fengyu | - |
dc.contributor.author | Klein, Chen | - |
dc.contributor.author | Longhi, Elena | - |
dc.contributor.author | Barlow, Stephen | - |
dc.contributor.author | Marder, Seth R | - |
dc.contributor.author | Sarusi, Gabby | - |
dc.contributor.author | Kahn, Antoine | - |
dc.date.accessioned | 2024-01-20T17:13:21Z | - |
dc.date.available | 2024-01-20T17:13:21Z | - |
dc.date.issued | 2019 | en_US |
dc.identifier.citation | Zhang, Fengyu, Klein, Chen, Longhi, Elena, Barlow, Stephen, Marder, Seth R, Sarusi, Gabby, Kahn, Antoine. (2019). Molecular-Reductant-Induced Control of a Graphene–Organic Interface for Electron Injection. Chemistry of Materials, 31 (17), 6624 - 6632. doi:10.1021/acs.chemmater.9b00566 | en_US |
dc.identifier.issn | 0897-4756 | - |
dc.identifier.uri | http://arks.princeton.edu/ark:/88435/pr1ms3k19n | - |
dc.description.abstract | Surface doping of graphene with redox-active molecules is an effective approach to tune its electrical properties, in particular for application as transparent electrodes. Here we present a study and application of surface n-doping of graphene with the molecular reductant (pentamethylcyclopentadienyl)(1,3,5-trimethylbenzene)ruthenium dimer ([RuCp*Mes]2). Photoemission spectroscopy and carrier-transport measurements are combined to investigate doping-induced changes in the electronic structure of the interface between graphene and phenyldi(pyren-2-yl)phosphine oxide (POPy2), which is a low-electron-affinity material that has been used as an electron-transport layer (ETL) in organic light-emitting diodes. Photoemission and Hall voltage measurements confirm the n-doping of graphene. Doping with 1−2 nm of [RuCp*Mes]2 reduces the graphene work function by 1.8 eV and the electron injection barrier by more than 1 eV, enhancing electron injection into POPy2 by several orders of magnitude. Graphene/POPy2/Al diodes with doped graphene cathodes exhibit reasonable stability in both nitrogen and air. These results represent a significant step toward the use of graphene as a transparent cathode for organic devices in general and for OLEDs in particular. | en_US |
dc.format.extent | 6624 - 6632 | en_US |
dc.language | en | en_US |
dc.language.iso | en_US | en_US |
dc.relation.ispartof | Chemistry of Materials | en_US |
dc.rights | Author's manuscript | en_US |
dc.title | Molecular-Reductant-Induced Control of a Graphene–Organic Interface for Electron Injection | en_US |
dc.type | Journal Article | en_US |
dc.identifier.doi | doi:10.1021/acs.chemmater.9b00566 | - |
dc.identifier.eissn | 1520-5002 | - |
pu.type.symplectic | http://www.symplectic.co.uk/publications/atom-terms/1.0/journal-article | en_US |
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