Results 31 to 40 of about 59,279 (293)

Progress of display performances: AR, VR, QLED, OLED, and TFT

open access: yesJournal of Information Display, 2019
In 2018, great progress in display performances was achieved in the field of virtual reality (VR), augmented reality (AR), quantum dot light-emitting diode (QLED), and organic light-emitting diode (OLED) displays, in addition to the thin-film transistor (
Ho Jin Jang   +6 more
doaj   +1 more source

Visible Light Communications towards 5G [PDF]

open access: yes, 2015
5G networks have to offer extremely high capacity for novel streaming applications. One of the most promising approaches is to embed large numbers of co-operating small cells into the macro-cell coverage area.
Chvojka, P.   +3 more
core   +2 more sources

Effect of Interlayer Stress on U Bends and Water Droplet Bends

open access: yesJournal of Engineering, 2022
The interlayer stress (IS) analysis of the flexible active-matrix organic light-emitting diode (AMOLED) panel is critical for decreasing the stress concentration and reducing the risk of overall screen failure.
Qiujun Wang   +6 more
doaj   +1 more source

n-ZnO/p-GaN heterojunction light-emitting diodes featuring a buried polarization-induced tunneling junction

open access: yesAIP Advances, 2016
n-ZnO/p-GaN heterojunction light-emitting diodes with a p-GaN/Al0.1Ga0.9N/n+-GaN polarization-induced tunneling junction (PITJ) were fabricated by metal-organic chemical vapor deposition.
Ling Li   +7 more
doaj   +1 more source

White Fluorescent Organic Light-Emitting Diodes with 100% Power Conversion

open access: yesResearch, 2022
Energy-efficient lighting sources are desired to provide another solution of carbon emission reduction. White organic light-emitting diodes are promising, because of theoretical internal quantum efficiencies for 100% electric-to-light conversion. However,
Dongxue Ding   +7 more
doaj   +1 more source

Effect of selected luminescent layers on CCT, CRI, and response times [PDF]

open access: yes, 2019
Phosphors have been used as wavelength converters in illumination for many years. When it is excited with blue light, the frequently used yttrium aluminium garnet doped with cerium (YAG:Ce) phosphor converts a part of blue light to a wideband yellow ...
Jargus, Jan   +4 more
core   +1 more source

Comparison of ophthalmic toxicity of light-emitting diode and organic light-emitting diode light sources. [PDF]

open access: yesSci Rep, 2020
AbstractThe use of organic light-emitting diodes (OLEDs) has rapidly increased in recent years. However, the effect of OLEDs on human health has not been studied yet. We investigated morphologic and functional changes after OLEDs exposure of human ocular cells, including corneal, conjunctival, lens, and retinal pigment epithelial cells, and mouse eyes.
Jun I   +7 more
europepmc   +5 more sources

Polymer nanofibers as novel light-emitting sources and lasing material [PDF]

open access: yes, 2013
Polymer micro- and nano-fibers, made of organic light-emitting materials with optical gain, show interesting lasing properties. Fibers with diameters from few tens of nm to few microns can be fabricated by electrospinning, a method based on electrostatic
Camposeo, Andrea   +2 more
core   +1 more source

Efficient Tandem Organic Light Emitting Diode Using Organic Photovoltaic Charge Generation Layer

open access: yesInternational Journal of Optics, 2018
Highly efficient tandem red OLED is proposed using planar organic heterojunction based charge generation layer (CGL) of C70 (Fullerene)/CoPc (Cobalt Phthalocyanine). The proposed charge generation layer generates charges and exhibits organic photovoltaic
Akanksha Jetly, Rajesh Mehra
doaj   +1 more source

Charge and exciton dynamics of OLEDs under high voltage nanosecond pulse: towards injection lasing

open access: yesNature Communications, 2020
Though efforts toward electrically-pumped lasers based on simple organic light-emitting diode (OLED) structures have been reported, a comprehensive model is needed to elucidate key optoelectronic processes.
Viqar Ahmad   +9 more
doaj   +1 more source

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