Show simple item record

dc.contributor.authorGeorgiadou, Dimitra G.
dc.contributor.authorLin, Yen Hung
dc.contributor.authorLim, Jongchul
dc.contributor.authorRatnasingham, Sinclair
dc.contributor.authorMcLachlan, Martyn A.
dc.contributor.authorSnaith, Henry J.
dc.contributor.authorAnthopoulos, Thomas D.
dc.date.accessioned2019-05-20T07:19:40Z
dc.date.available2019-05-20T07:19:40Z
dc.date.issued2019-05-08
dc.identifier.citationGeorgiadou DG, Lin Y, Lim J, Ratnasingham S, McLachlan MA, et al. (2019) High Responsivity and Response Speed Single-Layer Mixed-Cation Lead Mixed-Halide Perovskite Photodetectors Based on Nanogap Electrodes Manufactured on Large-Area Rigid and Flexible Substrates. Advanced Functional Materials: 1901371. Available: http://dx.doi.org/10.1002/adfm.201901371.
dc.identifier.issn1616-301X
dc.identifier.issn1616-3028
dc.identifier.doi10.1002/adfm.201901371
dc.identifier.urihttp://hdl.handle.net/10754/652905
dc.description.abstractMixed-cation lead mixed-halide perovskites are employed as the photoactive material in single-layer solution-processed photodetectors fabricated with coplanar asymmetric nanogap Al–Au and indium tin oxide–Al electrodes. The nanogap electrodes, bearing an interelectrode distance of ≈10 nm, are patterned via adhesion lithography, a simple, low-cost, and high-throughput technique. Different electrode shapes and sizes are demonstrated on glass and flexible plastic substrates, effectively engineering the device architecture, and, along with perovskite film and material optimization, paving the way toward devices with tunable operational characteristics. The optimized coplanar nanogap junction perovskite photodetectors show responsivities up to 33 A W−1, specific detectivity on the order of 1011 Jones, and response times below 260 ns, while retaining a low dark current (0.3 nA) under −2 V reverse bias. These values outperform the vast majority of perovskite photodetectors reported so far, while avoiding the complicated fabrication steps involved in conventional multilayer device structures. This work highlights the promising potential of the proposed asymmetric nanogap electrode architecture for application in the field of flexible optoelectronics.
dc.description.sponsorshipD.G.G. and T.D.A. acknowledge financial support from the European Union Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement 706707. T.D.A. acknowledges the support from King Abdullah University of Science and Technology (KAUST).
dc.publisherWiley
dc.relation.urlhttps://onlinelibrary.wiley.com/doi/full/10.1002/adfm.201901371
dc.rightsArchived with thanks to Advanced Functional Materials
dc.subjectimage sensors
dc.subjectmetal halide perovskites
dc.subjectnanopatterning
dc.subjectphotodiodes
dc.titleHigh Responsivity and Response Speed Single-Layer Mixed-Cation Lead Mixed-Halide Perovskite Photodetectors Based on Nanogap Electrodes Manufactured on Large-Area Rigid and Flexible Substrates
dc.typeArticle
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Division
dc.contributor.departmentMaterials Science and Engineering Program
dc.contributor.departmentKAUST Solar Center (KSC)
dc.identifier.journalAdvanced Functional Materials
dc.eprint.versionPost-print
dc.contributor.institutionDepartment of Materials and Centre for Plastic Electronics, Imperial College London, Prince Consort Road, London, SW7 2BP, Department of Materials and Centre for Plastic Electronics, Imperial College London, Prince Consort Road, London, SW7 2BP, UK, , United Kingdom
dc.contributor.institutionDepartment of Physics and Centre for Plastic Electronics, Blackett Laboratory, Imperial College London, Exhibition Road, London, SW7 2BW, Department of Physics and Centre for Plastic Electronics, Blackett Laboratory, Imperial College London, Exhibition Road, London, SW7 2BW, UK, , United Kingdom
dc.contributor.institutionDepartment of Physics, University of Oxford, Clarendon Laboratory, Parks Road, Oxford, OX1 3PU, Department of Physics, University of Oxford, Clarendon Laboratory, Parks Road, Oxford, OX1 3PU, UK, , United Kingdom
kaust.personAnthopoulos, Thomas D.


Files in this item

Thumbnail
Name:
Georgiadou et al. Adv. Funct. Mater. 2019_1901371.pdf
Size:
1.939Mb
Format:
PDF
Description:
Accepted Manuscript
Embargo End Date:
2020-05-08

This item appears in the following Collection(s)

Show simple item record