Results 21 to 30 of about 50,390 (160)

Suppression of external quantum efficiency rolloff in organic light emitting diodes by scavenging triplet excitons

open access: yesNature Communications, 2020
Though organic light-emitting diodes are highly desirable for display and lighting applications, efficiency roll-off at high current densities limits its applicability.
Buddhika S. B. Karunathilaka   +8 more
doaj   +1 more source

Category theory and organic electronics

open access: yesPhysics Open, 2023
Inorganic semiconductors and conducting polymers are described by band conduction models with delocalized electrons, whereas small-molecule organic compounds are described by hopping conduction between localized molecular orbitals.
Jun-ichi Takahashi
doaj   +1 more source

Thermally activated delayed fluorescence with 7% external quantum efficiency from a light-emitting electrochemical cell

open access: yesNature Communications, 2019
Thermally activated delayed fluorescence (TADF) emitters deliver impressive performance in sophisticated multilayer devices. Here, the authors report efficient TADF emission from light-emitting electrochemical cells that feature a solution-processed ...
Petter Lundberg   +5 more
doaj   +1 more source

Chemical doping to control the in-situ formed doping structure in light-emitting electrochemical cells

open access: yesScientific Reports, 2023
The initial operation of a light-emitting electrochemical cell (LEC) constitutes the in-situ formation of a p–n junction doping structure in the active material by electrochemical doping.
Gunel Huseynova   +6 more
doaj   +1 more source

Molecular organic electronic circuits [PDF]

open access: yesProceedings of the 2006 IEEE/ACM international conference on Computer-aided design - ICCAD '06, 2006
Electronic energy disorder associated within amorphous and polycrystaline molecular organic thin film structures strongly affects the macroscopic observable behavior of organic field effect transistors (OFET) and poses practical challenges to implementing OFET circuits.
Vladimir Bulovi   +6 more
openaire   +1 more source

Solid cyclooctatetraene-based triplet quencher demonstrating excellent suppression of singlet–triplet annihilation in optical and electrical excitation

open access: yesNature Communications, 2020
Though reducing non-emissive triplet excited-states using quenchers effectively improves organic semiconductor laser diode (OSLD) performance, existing quenchers are not suitable for devices.
Van T. N. Mai   +11 more
doaj   +1 more source

Understanding degradation of organic light-emitting diodes from magnetic field effects

open access: yesCommunications Materials, 2020
Improving the lifetime of organic light-emitting diodes requires that degradation processes are understood. Here it is demonstrated that magnetic field effects can be used as a non-destructive indicator of device degradation.
Masaki Tanaka   +3 more
doaj   +1 more source

Influence of energy gap between charge-transfer and locally excited states on organic long persistence luminescence

open access: yesNature Communications, 2020
Long-persistent luminescence can be realized in all-organic systems (OLPL) but still with unsatisfactory performance. Here the authors investigate the relationships between energy levels and emission properties in a series of OLPL materials and propose a
Zesen Lin   +3 more
doaj   +1 more source

A high-conductivity n-type polymeric ink for printed electronics

open access: yesNature Communications, 2021
The development of n-type conductive polymer inks is critical for the development of next-generation opto-electronic devices that rely on efficient hole and electron transport. Here, the authors report an alcohol-based, high performance and stable n-type
Chi-Yuan Yang   +18 more
doaj   +1 more source

Nanoparticles for organic electronics applications

open access: yesMaterials Research Express, 2020
Recently, the research in solution-based, small-molecule organic semiconductors has achieved great progress, although their application in organic electronics devices is still restricted by a variety of issues, including crystal misorientation ...
Zhengran He, Ziyang Zhang, Sheng Bi
doaj   +1 more source

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