Skip to Main content Skip to Navigation
Journal articles

White-light electroluminescence from a layer incorporating a single fully-organic spiro compound with phosphine oxide substituents

Abstract : We have investigated the potential as an OLED emitter of a spiro compound with phosphine substituents initially designed as a host layer for triplet emitters. This is motivated by the fact that the spiro architecture is expected to reduce the detrimental impact of intermolecular interactions, thus allowing for the use of a single-component layer. Moreover, theoretical calculations suggest that this compound displays all features required for a thermally-assisted delayed fluorescence (TADF) behavior. The photophysical properties of the compound in solution are extremely unusual, as illustrated in particular by a dual emission band with relative intensities strongly depending on the experimental conditions. Although no TADF behavior is evidenced in OLED devices, the compound unexpectedly generates a white light signal, which is interpreted as the result of the formation of both intramolecular and intermolecular (exciplex) charge-transfer states.
Document type :
Journal articles
Complete list of metadatas

Cited literature [39 references]  Display  Hide  Download

https://hal-univ-rennes1.archives-ouvertes.fr/hal-02997298
Contributor : Laurent Jonchère <>
Submitted on : Tuesday, November 10, 2020 - 9:32:42 AM
Last modification on : Wednesday, November 11, 2020 - 3:25:46 AM

File

 Restricted access
To satisfy the distribution rights of the publisher, the document is embargoed until : 2021-04-01

Please log in to resquest access to the document

Identifiers

Citation

P Tourneur, Fabien Lucas, Cassandre Quinton, Y Olivier, R Lazzaroni, et al.. White-light electroluminescence from a layer incorporating a single fully-organic spiro compound with phosphine oxide substituents. Journal of Materials Chemistry C, Royal Society of Chemistry, 2020, 8 (41), pp.14462-14468. ⟨10.1039/D0TC03285A⟩. ⟨hal-02997298⟩

Share

Metrics

Record views

36