Coverage Contact Control of Benzoxazole-Based SAMs to Enhance the Operational Performance of Perovskite Nanocrystal Light-Emitting Diodes

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dc.contributor.authorVillanueva-Antoli, Alexiscs
dc.contributor.authorMarín-Moncusí, Laiacs
dc.contributor.authorPuerto-Galvis, Carlos E.cs
dc.contributor.authorSánchez, Rafael S.cs
dc.contributor.authorSimancas, Jorgecs
dc.contributor.authorBarea, Eva Mariacs
dc.contributor.authorRodriguez Pereira, Jhonatancs
dc.contributor.authorPareja-Rivera, Carinacs
dc.contributor.authorGualdron-Reyes, Andres F.cs
dc.contributor.authorPalomares, Emiliocs
dc.contributor.authorMartínez-Ferrero, Eugeniacs
dc.contributor.authorMora-Sero, Ivancs
dc.coverage.issue10cs
dc.coverage.volume12cs
dc.date.accessioned2025-10-21T12:05:01Z
dc.date.available2025-10-21T12:05:01Z
dc.date.issued2025-05-01cs
dc.description.abstractPerovskite light-emitting diodes (PeLEDs) have emerged as a prominent topic within optoelectronic research. Despite remarkable advancements, this technology still faces challenges that must be addressed for successful commercialization. Typical device architectures employ PEDOT:PSS as hole transporting material (HTM). However, besides its expensive cost, PEDOT:PSS has been reported to cause issues with efficiency and long-term stability. Molecular self-assembled monolayers (SAMs) have arisen as potential HTMs, not just to overcome these drawbacks but to enhance the interface properties and performance of LEDs. This technology has been efficiently applied in PeLEDs, but its use in devices based on perovskite nanocrystals (PNCs) remain underexplored. In this work, two benzoxazole derivatives have been analyzed as SAMs to conform the hole selective contact in CsPbBr3 PNCs-based LEDs. The devices demonstrate improved optoelectronic properties compared to the reference composed of PEDOT:PSS, attributed to a suitable band alignment and an enhanced charge injection. Furthermore, optimizing the deposition technique of SAMs on the conducting substrate by dip- or spin-coating has allowed the preparation of efficient LEDs exhibiting external quantum efficiencies (EQEs) up to 6.8% with 300 s of operational stability. This research aims to provide extensive insights into applying SAMs to design PeLEDs with improved carrier mobility.en
dc.description.abstractPerovskite light-emitting diodes (PeLEDs) have emerged as a prominent topic within optoelectronic research. Despite remarkable advancements, this technology still faces challenges that must be addressed for successful commercialization. Typical device architectures employ PEDOT:PSS as hole transporting material (HTM). However, besides its expensive cost, PEDOT:PSS has been reported to cause issues with efficiency and long-term stability. Molecular self-assembled monolayers (SAMs) have arisen as potential HTMs, not just to overcome these drawbacks but to enhance the interface properties and performance of LEDs. This technology has been efficiently applied in PeLEDs, but its use in devices based on perovskite nanocrystals (PNCs) remain underexplored. In this work, two benzoxazole derivatives have been analyzed as SAMs to conform the hole selective contact in CsPbBr3 PNCs-based LEDs. The devices demonstrate improved optoelectronic properties compared to the reference composed of PEDOT:PSS, attributed to a suitable band alignment and an enhanced charge injection. Furthermore, optimizing the deposition technique of SAMs on the conducting substrate by dip- or spin-coating has allowed the preparation of efficient LEDs exhibiting external quantum efficiencies (EQEs) up to 6.8% with 300 s of operational stability. This research aims to provide extensive insights into applying SAMs to design PeLEDs with improved carrier mobility.en
dc.formattextcs
dc.format.extent7cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationAdvanced Materials Interfaces. 2025, vol. 12, issue 10, 7 p.en
dc.identifier.doi10.1002/admi.202400884cs
dc.identifier.issn2196-7350cs
dc.identifier.other197227cs
dc.identifier.urihttps://hdl.handle.net/11012/255593
dc.language.isoencs
dc.relation.ispartofAdvanced Materials Interfacescs
dc.relation.urihttps://advanced.onlinelibrary.wiley.com/doi/10.1002/admi.202400884cs
dc.rightsCreative Commons Attribution 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/2196-7350/cs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subjectcontactsen
dc.subjectLED (light-emitting diode)en
dc.subjectnanocrystalsen
dc.subjectperovskiteen
dc.subjectSAM (self-assembled monolayers)en
dc.subjectcontacts
dc.subjectLED (light-emitting diode)
dc.subjectnanocrystals
dc.subjectperovskite
dc.subjectSAM (self-assembled monolayers)
dc.titleCoverage Contact Control of Benzoxazole-Based SAMs to Enhance the Operational Performance of Perovskite Nanocrystal Light-Emitting Diodesen
dc.title.alternativeCoverage Contact Control of Benzoxazole-Based SAMs to Enhance the Operational Performance of Perovskite Nanocrystal Light-Emitting Diodesen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-197227en
sync.item.dbtypeVAVen
sync.item.insts2025.10.21 14:05:01en
sync.item.modts2025.10.21 13:33:35en
thesis.grantorVysoké učení technické v Brně. Středoevropský technologický institut VUT. Pokročilé nízkodimenzionální nanomateriálycs
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