Achieving High-Performance Nondoped OLEDs with Extremely Small Efficiency Roll-Off by Combining Aggregation-Induced Emission and Thermally Activated Delayed Fluorescence
Sign Up to like & getrecommendations! Published in 2017 at "Advanced Functional Materials"
DOI: 10.1002/adfm.201606458
Abstract: Luminescent materials with thermally activated delayed fluorescence (TADF) can harvest singlet and triplet excitons to afford high electroluminescence (EL) efficiencies for organic light-emitting diodes (OLEDs). However, TADF emitters generally have to be dispersed into host… read more here.
Keywords: thermally activated; efficiency roll; activated delayed; efficiency ... See more keywords
High Performance NIR OLEDs with Low Efficiency Roll‐Off by Leveraging Os(II) Phosphors and Exciplex Co‐Host
Sign Up to like & getrecommendations! Published in 2021 at "Advanced Functional Materials"
DOI: 10.1002/adfm.202102787
Abstract: Near‐infrared (NIR) organic‐light emitting devices (OLEDs) with high radiance are useful for applications including invisible marking, communication, and biomedical imaging. However, performances of NIR OLEDs are typically limited by their severe efficiency roll‐offs at high… read more here.
Keywords: high performance; efficiency roll; nir oleds; performance nir ... See more keywords
Chiral Octahydro-Binaphthol Compound-Based Thermally Activated Delayed Fluorescence Materials for Circularly Polarized Electroluminescence with Superior EQE of 32.6% and Extremely Low Efficiency Roll-Off.
Sign Up to like & getrecommendations! Published in 2019 at "Advanced materials"
DOI: 10.1002/adma.201900524
Abstract: Circularly polarized organic light-emitting diodes (CP-OLEDs) are particularly favorable for the direct generation of CP light, and they demonstrate a promising application in 3D display. However, up to now, such CP devices have suffered from… read more here.
Keywords: thermally activated; circularly polarized; efficiency roll; octahydro binaphthol ... See more keywords
High‐Performance Narrowband Pure‐Red OLEDs with External Quantum Efficiencies up to 36.1% and Ultralow Efficiency Roll‐Off
Sign Up to like & getrecommendations! Published in 2022 at "Advanced Materials"
DOI: 10.1002/adma.202201442
Abstract: High‐color‐purity blue and green organic light‐emitting diodes (OLEDs) have been resolved thanks to the development of B/N‐based polycyclic multiple resonance (MR) emitters. However, due to the derivatization limit of B/N polycyclic structures, the design of… read more here.
Keywords: ultralow efficiency; red oleds; efficiency roll; external quantum ... See more keywords
Metal‐Perturbed Multiresonance TADF Emitter Enables High‐Efficiency and Ultralow Efficiency Roll‐Off Nonsensitized OLEDs with Pure Green Gamut
Sign Up to like & getrecommendations! Published in 2022 at "Advanced Materials"
DOI: 10.1002/adma.202208378
Abstract: Multiresonance (MR)‐induced thermally activated delayed fluorescence (TADF) emitters based on B‐ and N‐embedded polycyclic aromatics are desirable for ultrahigh‐definition organic light‐emitting diodes (OLEDs) due to their high photoluminescence quantum yield (PLQY) and narrow bandwidth. But… read more here.
Keywords: tadf emitter; efficiency roll; emitter; multiresonance ... See more keywords
New-Fashioned Universal and Functional Host-Material from a Near-Ultraviolet Organic Emitter for High-Efficiency Organic Light-Emitting Diodes with Low Efficiency Roll-Offs.
Sign Up to like & getrecommendations! Published in 2022 at "Small"
DOI: 10.1002/smll.202204029
Abstract: In this work, a near-ultraviolet (NUV) emitter, 2MCz-CNMCz, with hot-exciton property is designed based on a "long-short axis" strategy, which exhibits good thermal stability, bipolar carrier transport ability, and high T1 energy level. Its nondoped… read more here.
Keywords: efficiency roll; host; efficiency; host material ... See more keywords
Utilizing triazine/pyrimidine acceptor and carbazole-triphenylamine donor based bipolar novel host materials for highly luminescent green phosphorescent OLEDs with lower efficiency roll-off
Sign Up to like & getrecommendations! Published in 2018 at "Dyes and Pigments"
DOI: 10.1016/j.dyepig.2018.05.022
Abstract: Abstract In this work, two novel bipolar host materials were designed, synthesized and applied in green phosphorescent based OLEDs. Both the host materials, 4-(2-(4,6-diphenyl-1,3,5-triazin-2-yl)-9H-carbazol-9-yl)-N,N-diphenylaniline ( TRZ 1 ) and 4-(2-(4,6-diphenylpyrimidin-2-yl)-9H-carbazol-9-yl)-N,N-diphenylaniline ( PYR 1 ) exhibited… read more here.
Keywords: green phosphorescent; pyr; efficiency roll; host materials ... See more keywords
Tetraphenylethylene-substituted phenothiazine-based AIEgens for non-doped deep-blue organic light-emitting diodes with negligible efficiency roll-off
Sign Up to like & getrecommendations! Published in 2019 at "Dyes and Pigments"
DOI: 10.1016/j.dyepig.2018.09.033
Abstract: Abstract Deep-blue organic light-emitting diodes (OLEDs) with low efficiency roll-off and high color purity are critical for the tetraphenylethylene-based AIEgens derivative. In this work, the novel blue emitter, 3-(1-phenyl-1H-phenanthro[9,10-d]imidazol-2-yl)-10-(4-(1,2,2-triphenylvinyl)phenyl)-10H-phenothiazine (TPEPPI), was designed and synthesized to… read more here.
Keywords: efficiency; based aiegens; efficiency roll; deep blue ... See more keywords
Phosphorescent OLEDs with extremely low efficiency roll-off enabled via rationally designed benzimidazole-based bipolar hosts
Sign Up to like & getrecommendations! Published in 2020 at "Dyes and Pigments"
DOI: 10.1016/j.dyepig.2020.108477
Abstract: Abstract Phosphorescent organic light-emitting diodes (PhOLEDs) have manifested enormous potential for display and lighting applications because of their high internal and external quantum efficiencies, nevertheless, severe efficiency roll-off at high luminance remains a major bottleneck… read more here.
Keywords: extremely low; phosphorescent oleds; efficiency roll; low efficiency ... See more keywords
Orange red iridium complexes with good electron mobility and mild OLED efficiency roll-off
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Organometallic Chemistry"
DOI: 10.1016/j.jorganchem.2018.09.008
Abstract: Abstract Two iridium(III) complexes with 1-(3,5-bis(trifluoromethyl)-pyridin-4-yl)isoquinoline (tntpiq) as main ligand, 2-(5-pyridin-4-yl)-1,3,4-oxadiazol-2-yl)phenol (pop) and 2-(5-pyridin-4-yl)-1,3,4-thiadiazol-2-yl)phenol (psp) as ancillary ligands were investigated. Both complexes emit orange red lights with different photoluminescence efficiencies (Ir(tntpiq)2(pop): λem = 585 nm, Φ = 0.41 and Ir(tntpiq)2(psp):… read more here.
Keywords: efficiency roll; orange red; pyridin; efficiency ... See more keywords
The effect of the exciplex heterojunction interlayer on efficiency roll-off in non-doped blue phosphorescent organic light-emitting diodes
Sign Up to like & getrecommendations! Published in 2020 at "Optical Materials"
DOI: 10.1016/j.optmat.2019.109561
Abstract: Abstract High exciton density will cause triplet-triplet annihilation (TTA)/triplet-polaron annihilation (TPA) and result in low efficiency of blue phosphorescent organic light-emitting diodes (OLEDs) at high voltage. The carriers and excitons can be effectively localized through… read more here.
Keywords: effect; efficiency; efficiency roll; heterojunction interlayer ... See more keywords