Journal of Materials Chemistry C Editor's choice web collection: ‘Spiro compounds for electronics’
Cyril Poriel introduces the Journal of Materials Chemistry C Editor's choice web collection on advances in ‘Spiro compounds for electronics’.
Paper
Highly efficient, ultralow turn-on voltage red and white organic light-emitting devices based on a novel exciplex host
We have prepared high-performance white OLEDs based on exciplex systems and blue ultra-thin FIrPic layers, exhibiting a low turn-on voltage of 2.2 V with a maximum power efficiency of 34.1 lm W−1, and the CIE coordinate (0.33,0.33) at 1000 cd m−2.
Cyanophenyl spiro[acridine-9,9′-fluorene]s as simple structured hybridized local and charge-transfer-based ultra-deep blue emitters for highly efficient non-doped electroluminescent devices (CIEy ≤ 0.05)
Cyanophenyl substituted spiro[acridine-9,9′-fluorene]s featured with HLCT excited states yielded highly efficient non-doped OLEDs with emissions in high-definition television standard blue color, CIEy ≤ 0.05, and CEmax/EQEmax of 6.54 cd A−1/4.63%.
Novel spiro[fluorene-9,9′-xanthene]-based hole transport layers for red and green PHOLED devices with high efficiency and low efficiency roll-off
Spiro[fluorene-9,9′-xanthene]-based HTMs for high efficiency red and green PHOLEDs with low efficiency roll-off.
Synthesis of spirodithienogermole with triphenylamine units as a dopant-free hole-transporting material for perovskite solar cells
Spiro-condensed dithienogermoles with electron-donating aromatic substituents were prepared, one of which was examined as the hole-transporting material of perovskite solar cell, providing the maximal photo-current conversion efficiency of 14.67%.
Multiple photoluminescence of spiro[acridine-fluorene]-based o-carboranyl compounds with potential as a visual sensory material
Two spiro[acridine-9,9′-fluorene]-based closo-o-carboranyl compounds were prepared and they demonstrated the application potential of π-aromatic conjugated o-carboranyl compounds as visual sensory materials.
Universal host materials for red, green and blue high-efficiency single-layer phosphorescent organic light-emitting diodes
As simplifying the device structure is a key step for the future of organic electronic, we report herein high efficiency universal host materials for red, green and blue Single-Layer Phosphorescent OLEDs.
Spiro-type host materials with rigidified skeletons for RGB phosphorescent OLEDs
A universal host material for red, green and blue phosphors raises challenges for the fabrication of efficient phosphorescent organic light-emitting diodes (PHOLEDs).
Non-fullerene small molecule acceptors with three-dimensional thiophene/selenophene-annulated perylene diimides for efficient organic solar cells
Three-dimensional non-fullerene acceptors with a spiro core linked with S/Se fused perylene diimides possess appropriate energy levels, twisted molecular configuration and high carrier mobility, leading to a PCE of 6.95% for organic solar cells.
A cost-device efficiency balanced spiro based hole transport material for perovskite solar cells
The new hole-transport material (HTM), spiro-omethoxyimidazole (spiro-OMeIm) and its application in perovskite solar cells (PSCs) is presented as a less costly alternative to the benchmark spiro-MeOTAD, working towards the future development of low-cost PSCs.
High-efficiency pure blue thermally activated delayed fluorescence emitters with a preferentially horizontal emitting dipole orientation via a spiro-linked double D–A molecular architecture
A spiro-linked double D–A molecular architecture has been introduced to construct blue thermally activated delayed fluorescence (TADF) emitters with a preferentially horizontal emitting dipole orientation.
Effect of structural engineering of π-spacers on anti-aggregation of D–A–π–A dyes
SPDF and EIMW act as efficient anti-aggregation π-spacers due to the rigid ‘T’ configuration of the former and the large steric hindrance of the latter.
Thermally activated delayed fluorescence emitters with low concentration sensitivity for highly efficient organic light emitting devices
By introducing a fluorene group, the molecular rigidity and intermolecular steric hindrance of SPFS-PXZ are greatly improved. As a result, SPFS-PXZ successfully realizes high external quantum efficiencies with low concentration sensitivity in OLEDs.
High-performance organic light-emitting diodes with low-efficiency roll-off using bulky tetradentate [Pt(O^N^C^N)] emitters
Double-host OLEDs with three bulky tetradentate [Pt(O^N^C^N)] emitters achieve a high EQEmax of >20%, a PEmax of >100 lm W−1, and low efficiency roll-off within 10 000 cd m−2.
A spiro-silafluorene–phenazasiline donor-based efficient blue thermally activated delayed fluorescence emitter and its host-dependent device characteristics
A blue TADF emitter based on a spiro-connected silafluorene–phenazasiline donor with an EQE of 20.6% and CIE coordinates of (0.150, 0.184).
Two spirobifluorene-based fluorescent probes with aggregation-induced emission properties: synthesis and application in the detection of Zn2+ and cell imaging
The synthesis and application of two spirobifluorene-based probes with AIEE properties have been reported for the first time.
Diazaspirocycles: novel platforms for efficient phosphorescent organic light-emitting diodes
Diazaspirocycle molecular platforms were used to construct hosts for efficient phosphorescent organic light-emitting diodes.
About this collection
Journal of Materials Chemistry C Advisory Board member Prof. Cyril Poriel (Université de Rennes and CNRS, France) has selected a collection of outstanding recent papers on spiro compounds for electronics, across JMC C and Materials Advances.