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 What is a phosphor
Structure and Mechanism of phosphors
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This represents emission spectrum and blue emission of KCI single crystal containing 400 ppm of Eu3+ ions. Blue emission whose peak point is at 422 nm is induced from the color center of the Eu2+ signifying that Eu3+ has been reduced into Eu2+.
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Eu3+ ion is represented by fine luminescence bands with FWHM (full width at half maximum- lower than 1nm) which is pertinent to transition in 580 ¡ 740 nm area.
Among these luminescence bands, transition in the 610 ¡ 620 nm area shows hypersensitivity of which intensity varies by tens to hundreds of times
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This represents the luminescence bands in the area of 480~500 nm, 535 ~560 nm and 580 ~590 nm.
Transition seen in the 535 ¡ 560 nm area varies its intensity (hypersensitivity) by tens of times to hundreds of times according to the coordination environment.
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Mechanism of a Li-Ion secondary battery
Material of Lithium Transition Metallic Oxide
Discharge curve of the anode
ASAS(Anti-Reflective&Anti-Static) Coating is to lower the surface reflective light by applying the uniformed layer of the low & high refraction on the panel face and to prevent electrification. Therefore, it can raise the reflective rate of the reflector up to 1.0% without degrading brightness and focus, upgrade the resolution, minimize the eye fatigue, and shield the electromagnetic waves.
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