High-temperature polymer electrolyte membrane fuel cell (HT-PEMFC) can be applied in electric vehicles and marine power supplies.
Analytical Chemistry
Apr 25, 2022
0
36
Professor Hiromi Nakano of Toyohashi University of Technology used a material with a unique periodical structure (smart material: Li-M-Ti-O [M = Nb or Ta]) as a host material to synthesize new Mn4+-activated phosphors that ...
Materials Science
Jul 20, 2021
0
6
To be more energy efficient, many people have replaced their incandescent lights with light-emitting diode (LED) bulbs. However, those currently on the market emit a lot of blue light, which has been linked to eye troubles ...
Condensed Matter
Apr 28, 2021
0
14
By efficiently converting the blue light emitted from InGaN chips into yellow light and mixing them into white light, classic yellow Y3Al5O12: Ce (YAG) phosphor has proved itself to be the most prominent phosphor in white ...
Materials Science
Oct 27, 2020
0
8
Real-time measurements captured by researchers at the Department of Energy's Oak Ridge National Laboratory provide missing insight into chemical separations to recover cobalt, a critical raw material used to make batteries ...
Materials Science
Aug 04, 2020
0
148
A recent study, affiliated with South Korea's Ulsan National Institute of Science and Technology (UNIST) has reported a phosphate-based electrocatalyst of Fe3Co(PO4)4/reduced-graphene-oxide (rGO) (1) for OER, which is predicted ...
Analytical Chemistry
Feb 20, 2020
0
16
Mechanoluminescence (ML) is a type of luminescence induced by any mechanical action on a solid, leading to a range of applications in materials research, photonics and optics. For instance, the mechanical action can release ...
A Queen's University Belfast researcher has developed a low cost technique to convert left over barley from alcohol breweries into carbon, which could be used as a renewable fuel for homes in winter, charcoal for summer barbecues ...
Materials Science
Nov 26, 2019
7
999
Concrete is the most widely used man-made material, commonly used in buildings, roads, bridges and industrial plants. But producing the Portland cement needed to make concrete accounts for 5-8% of all global greenhouse emissions. ...
Materials Science
Nov 19, 2019
0
10
The advent of the white light emitting diode (LED), which consists of a blue LED with a phosphor layer, greatly reduces the energy consumption for lighting. Despite the fast-growing market, white LEDs are still being designed ...
Optics & Photonics
Oct 09, 2019
0
20
A phosphor, most generally, is a substance that exhibits the phenomenon of luminescence. Somewhat confusingly, this includes both phosphorescent materials, which show a slow decay in brightness (>1ms), and fluorescent materials, where the emission decay takes place over tens of nanoseconds. Phosphorescent materials are known for their use in radar screens and glow-in-the-dark toys, whereas fluorescent materials are common in CRT and plasma video display screens, sensors, and white LEDs.
Phosphors are often transition metal compounds or rare earth compounds of various types. The most common uses of phosphors are in CRT displays and fluorescent lights. CRT phosphors were standardized beginning around World War II and designated by the letter "P" followed by a number.
Phosphorus, the chemical element named for its light-emitting behavior, emits light due to chemiluminescence, not phosphorescence.
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