Results 31 to 40 of about 59,112 (250)

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

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

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

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

Absorbance based light emitting diode optical sensors and sensing devices [PDF]

open access: yes, 2008
The ever increasing demand for in situ monitoring of health, environment and security has created a need for reliable, miniaturised sensing devices. To achieve this, appropriate analytical devices are required that possess operating characteristics of ...
Acharya   +138 more
core   +3 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

Organic Light‐Emitting Diode in Phototherapy Applications

open access: yesAdvanced Photonics Research
After decades of development, organic light‐emitting diode (OLED) technology has matured significantly. OLED displays are now ubiquitous in consumer electronics and household appliances. As another major application branch, OLED lighting has also entered
Yingguang Zhu   +9 more
doaj   +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

Recent advances in solid-state organic lasers

open access: yes, 2011
Organic solid-state lasers are reviewed, with a special emphasis on works published during the last decade. Referring originally to dyes in solid-state polymeric matrices, organic lasers also include the rich family of organic semiconductors, paced by ...
Ahmad   +195 more
core   +3 more sources

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