Results 1 to 10 of about 1,149,105 (118)

Composite Nanostructures for the Production of White Light [PDF]

open access: yesMolecules
In this work, two different composite nanostructures, YAG:Ce and Ga0.9In0.1N, were prepared by the Urea Glass Route method and tested for the production of white light. The first composite was prepared by synthetizing the Ga0.9In0.1N nanoparticles in the
Giovanni Russo   +7 more
doaj   +2 more sources

Tunable Emission and Color Temperature of Yb3+/Er3+/Tm3+-Tridoped Y2O3-ZnO Ceramic Nano-Phosphors Using Er3+ Concentration and Excitation Pump Power

open access: yesNanomaterials, 2022
In this study, a series of well-crystallized Yb3+/Er3+/Tm3+-tridoped Y2O3-ZnO ceramic nano-phosphors were prepared using sol–gel synthesis, and the phosphor structures were studied using X-ray diffraction, scanning electron microscopy, and ...
Boxu Xu   +9 more
doaj   +1 more source

Blue Photons from Broad-Spectrum LEDs Control Growth, Morphology, and Coloration of Indoor Hydroponic Red-Leaf Lettuce

open access: yesPlants, 2023
For indoor crop production, blue + red light-emitting diodes (LEDs) have high photosynthetic efficacy but create pink or purple hues unsuitable for workers to inspect crops.
Qingwu Meng, Erik S. Runkle
doaj   +1 more source

White Photoluminescence in Dy-Doped Oxyfluoride Glasses

open access: yesOptics, 2023
Dy3+-doped, Ag and Dy3+-co-doped, and Tm3+ and Dy3+-co-doped oxyfluoride glasses have been prepared by a conventional melt-quenching method. White and yellowish light emissions were generated in the glasses under excitation in the range from 350 to 390 ...
Xianmei Chen   +4 more
doaj   +1 more source

Effects of chromaticity difference from Planckian locus duv of lighting on tinted color of illumination and brightness in space (part 1): Experiment using a scale model with uniform luminance distribution

open access: yesJapan Architectural Review, 2022
The purpose of this study was to identify the combined effects of illuminance, correlated color temperature, and chromaticity shift from the Planckian locus duv on the perception of the tinted color of illumination and spatial brightness.
Etsuko Mochizuki, Takayuki Murakumo
doaj   +1 more source

Improvement of Luminescence Properties of Eulytite Single-Phase White Emitting Ca3Bi (PO4)3: Ce3+/Dy3+ Phosphor

open access: yesMolecules, 2023
To reduce the issue of tri-primary color reabsorption, a new approach for single-phase phosphors as light-emitting diodes (LEDs) has been recommended.
Mengjiao Xu   +4 more
doaj   +1 more source

The Impact of LED Lighting Spectra in a Plant Factory on the Growth, Physiological Traits and Essential Oil Content of Lemon Balm (Melissa officinalis)

open access: yesPlants, 2022
With the recent development of LED lighting systems for plant cultivation, the use of vertical farming under controlled conditions is attracting increased attention.
Hail Z. Rihan   +5 more
doaj   +1 more source

Effect of night interruption with colorful LED lamps and fertilizer treatments on growth and flowering characteristics of Phalaenopsis orchid [PDF]

open access: yesZīst/shināsī-i Giyāhī-i Īrān, 2021
Phalaenopsis (the moth orchid; Phalaenopsis spp.) is currently the most sold indoor potted crop in the world’s major floriculture markets. The effects of light quality in night interruption (NI) and NPK fertilizers were examined on the vegetative growth ...
Abolfazl Satari   +2 more
doaj   +1 more source

Room-Temperature Phosphorescent Co-Crystal Showing Direct White Light and Photo-Electric Conversion

open access: yesFrontiers in Chemistry, 2021
The development of molecular crystalline materials with efficient room-temperature phosphorescence has been obtained much attention due to their fascinating photophysical properties and potential applications in the fields of data storage, bioimaging and
Xiao-Gang Yang   +6 more
doaj   +1 more source

Breaking of Wavelength-Dependence in Holographic Wavefront Sensors Using Spatial-Spectral Filtering

open access: yesSensors, 2023
Nowadays, wavefront sensors are widely used to control the shape of the wavefront and detect aberrations of the complex field amplitude in various fields of physics. However, almost all of the existing wavefront sensors work only with quasi-monochromatic
Nikita Stsepuro   +3 more
doaj   +1 more source

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