Dominance of Exciton Lifetime in the Stability of Phosphorescent Dyes
Sign Up to like & getrecommendations! Published in 2019 at "Advanced Optical Materials"
DOI: 10.1002/adom.201901048
Abstract: Organic light‐emitting devices (OLEDs) are widely used for mobile displays, but the relatively short lifetime of blue OLEDs remains a challenge in many applications. Typically, instability is viewed as a material‐specific chemical degradation problem. It… read more here.
Keywords: triplet exciton; exciton lifetime; lifetime; dominance exciton ... See more keywords
Anisotropic Triplet Exciton Diffusion in Crystalline Functionalized Pentacene
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Physical Chemistry C"
DOI: 10.1021/acs.jpcc.0c07608
Abstract: Exciton multiplication through singlet fission (SF) offers scope for next-generation photovoltaic devices to exceed the Shockley–Queisser limit. Organic SF chromophores typically exhibit significan... read more here.
Keywords: exciton diffusion; anisotropic triplet; diffusion crystalline; exciton ... See more keywords
Mechanism of Ultrafast Triplet Exciton Formation in Single Cocrystals of π-Stacked Electron Donors and Acceptors.
Sign Up to like & getrecommendations! Published in 2022 at "Journal of the American Chemical Society"
DOI: 10.1021/jacs.2c08584
Abstract: Ultrafast triplet formation in donor-acceptor (D-A) systems typically occurs by spin-orbit charge-transfer intersystem crossing (SOCT-ISC), which requires a significant orbital angular momentum change and is thus usually observed when the adjacent π systems of D… read more here.
Keywords: triplet exciton; triplet; pyr; formation ... See more keywords
Nanoscale triplet exciton diffusion via imaging of up-conversion emission from single hybrid nanoparticles in molecular crystals.
Sign Up to like & getrecommendations! Published in 2017 at "Nanoscale"
DOI: 10.1039/c7nr01569k
Abstract: Up-conversion materials composed of donor and acceptor molecules which convert low energy photons into higher energy ones by triplet-triplet annihilation can improve the sensitivity of photocatalysts or the efficiency of solar cells. The use of… read more here.
Keywords: exciton diffusion; diffusion; triplet exciton; triplet ... See more keywords
Impact of molecular structure on singlet and triplet exciton diffusion in phenanthroline derivatives
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Materials Chemistry C"
DOI: 10.1039/d0tc00716a
Abstract: We demonstrate the impact of subtle changes in molecular structure on the singlet and triplet exciton diffusion lengths (LD) for derivatives of the archetypical electron-transport material 4,7-diphenyl-1,10-phenanthroline (BPhen). Specifically, this work offers a systematic characterization… read more here.
Keywords: diffusion; singlet triplet; triplet exciton; molecular structure ... See more keywords
Solution-processed white OLEDs with power efficiency over 90 lm W-1 by triplet exciton management with a high triplet energy level interfacial exciplex host and a high reverse intersystem crossing rate blue TADF emitter.
Sign Up to like & getrecommendations! Published in 2022 at "Materials horizons"
DOI: 10.1039/d1mh02060a
Abstract: Solution-processed white organic light-emitting diodes (WOLEDs) have shown much lower device efficiency than their vacuum-deposited counterparts, due to the lack of triplet exciton management in a single-emissive-layer device structure, which will induce triplet-triplet annihilation (TTA)… read more here.
Keywords: tadf; solution processed; triplet exciton; triplet ... See more keywords
A novel electroplex host with dual triplet exciton up-converting channels suppressing triplet exciton induced degradation mechanisms in blue organic light-emitting diodes
Sign Up to like & getrecommendations! Published in 2021 at "Journal of Materials Chemistry C"
DOI: 10.1039/d1tc03225a
Abstract: A novel electroplex host with two triplet exciton up-converting channels for suppressed triplet exciton triggered degradation mechanisms was developed using an electron transport type host (n-type host) with thermally activated... read more here.
Keywords: triplet exciton; novel electroplex; triplet; electroplex host ... See more keywords
Triplet exciton diffusion in metalorganic phosphorescent host-guest systems from first principles
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review B"
DOI: 10.1103/physrevb.99.205201
Abstract: We present an ab initio computational study of triplet exciton diffusion in four phosphorescent emitters commonly used in organic light-emitting diodes (OLEDs). By kinetic Monte Carlo simulations, triplet diffusion lengths are obtained for these emitters… read more here.
Keywords: diffusion metalorganic; triplet exciton; diffusion; exciton diffusion ... See more keywords