Results 31 to 40 of about 849,538 (300)
aot, 2013 Abstract ‘External quantum efficiency’, that is, the number of photons generated per electron passing through the p-n junction of an LED is probably the most important number to quantify the performance of an LED chip. Although advances in epitaxy have increased the fraction of radiative recombination to extremely high values, the ...
Julius Muschaweck, Christopher Wiesmann
openaire +1 more source
Coal Gasification Slag-Derived Ceramsite for High-Efficiency Phosphorus Removal from Wastewater
NanomaterialsCoal gasification slag (CGS), an industrial solid waste produced during high-temperature (1200–1600 °C) coal gasification, was utilized as the primary raw material, combined with minor additions of coal gangue and calcium oxide, to synthesize ceramsite ...
Yu Li +6 more
doaj +1 more source
Thin-film photonic crystal LEDs with enhanced directionality
, 2010 The use of photonic crystals for light extraction from light-emitting diodes (LEDs) gives the possibility to shape the farfield emission pattern. This is of particular interest for étendue-limited LED applications that require a more directional ...
Bergenek, Krister
core +1 more source
Light extraction from organic light emitting diodes (OLEDs)
Journal of Physics: Photonics, 2022 Abstract Organic light emitting diode (OLED) technology continues to make strides, particularly in display technology, with costs decreasing and consumer demand growing. Advances are also seen in OLED solid state lighting (SSL) though broad utilization of this technology is lagging.
Ruth Shinar, Joseph Shinar
openaire +1 more source
Recent advances in light outcoupling from white organic light-emitting diodes
, 2015 M.C.G. is grateful to the Scottish Funding Council (via SUPA) for financial support.Organic light-emitting diodes (OLEDs) have been successfully introduced to the smartphone display market and have geared up to become contenders for applications in ...
Gather, M.C., Reineke, S.
core +1 more source
Relationship between magnesium-bearing magnetite formation and magnetite oxidation
Journal of Materials Research and TechnologyThe impact of different oxidation atmospheres on the formation of magnesium-bearing magnetite in the Fe3O4–MgO and Fe2O3–MgO systems was investigated using FactSage 8.3 thermodynamic modeling, XRD, XPS, and SEM-EDS. This study also examined the influence
Fang Zhang +6 more
doaj +1 more source
"Effect of lanthanum p-aminosalicylate on vulcanization characteristics of natural rubber"
Hecheng xiangjiao gongyeLanthanum chloride and sodium p-aminosalicylate were used as raw materials to synthesize a new environmental-friendly accelerator lanthanum p-aminosalicylate (PAS-La) by precipitation method.
"LIU Yong-gang, HAO Wei, ZHANG Wen-tao, LIU Zhao-gang, HU Yan-hong, WU Jin-xiu, MA Rui-feng, DU Gui-fang"
doaj +1 more source
IEEE Photonics Journal, 2019 AlGaN alloys have been widely used to make ultraviolet light-emitting diodes (UV-LEDs) because its energy bandgap covers 200–360 nm wavelength range.
Pengwei Du, Zhiyuan Cheng
doaj +1 more source
Advanced LED Solid-State Lighting Optics
Crystals, 2020 Light-emitting diodes (LEDs) have been intensively studied for white-light lighting since their luminous efficacy exceeds 50 lm/W. Currently, the luminous efficacy of an LED light tube/bulb is almost above 100 lm/W.
Ching-Cherng Sun +2 more
doaj +1 more source
The moss Bryum argenteum var. muticum Brid. is well adapted to cope with high light in continental Antarctica [PDF]
, 2012 The net photosynthetic rate (NP), chlorophyll fluorescence, carotenoid content and chlorophyll content of the cosmopolitan moss Bryum argenteum were measured in the field at Botany Bay, southern Victoria Land, continental Antarctica (77°S).
M. Schlensog +11 more
core +1 more source