Results 31 to 40 of about 58,587 (231)

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

Prediction and Simulation of electrical and optical characteristics of an OLED based on P3BEdotBT3A organic material [PDF]

open access: yesE3S Web of Conferences, 2022
The OLED “organic light-emitting diode” has been highly industrialized for several years, especially since their use in smartphones and televisions. OLEDs have attracted a lot of attention because of their desirable characteristics including their low ...
El karkri Anass   +2 more
doaj   +1 more source

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

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

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

Luminescence in sulfides : a rich history and a bright future [PDF]

open access: yes, 2010
Sulfide-based luminescent materials have attracted a lot of attention for a wide range of photo-, cathodo- and electroluminescent applications. Upon doping with Ce3+ and Eu2+, the luminescence can be varied over the entire visible region by appropriately
Hens, Zeger   +3 more
core   +2 more sources

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

Investigation of Autostereoscopic Displays Based on Various Display Technologies

open access: yesNanomaterials, 2022
The autostereoscopic display is a promising way towards three-dimensional-display technology since it allows humans to perceive stereoscopic images with naked eyes.
Fuhao Chen, Chengfeng Qiu, Zhaojun Liu
doaj   +1 more source

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