Rare earth glow in the dark material

Rare earth luminescent rare earth 4f electrons by leaping between different energy levels arising due to the excitation of different ways, can be divided into light-emitting photoluminescence (photoluminescence), cathodoluminescence (cathodluminescence),glow in the dark dye , electroluminescence (electroluminescence), Radioluminous (radiation luminescence), X-ray luminescence (X-ray luminescence), friction luminescence (triboluminescence), glow in the dark rock ,chemiluminescence (chemiluminescence) and bioluminescence (bioluminescence) and so on.

Rare earth luminescent with the absorption ability, high conversion efficiency, can emit light from the ultraviolet to the infrared spectrum,glow in the dark material , especially in the visible region has a strong launch capability and so on. Rare earth luminescent materials have been widely used in various aspects of imaging displays, new light, X-ray intensifying screens and so on.

Rare earth glow in the dark material research

Several synthetic methods are reviewed current rare earth luminescent materials at home and abroad, including the conventional solid-state reaction method, several soft chemical method (sol - gel method,glow in the dark material , low temperature combustion method, hydrothermal synthesis, precipitation buffer solution) and Physical synthesis (microwave synthesis, CO2 laser heating vapor deposition synthesis). Summarizes the advantages and disadvantages of each method of synthesis, and synthesis of new rare earth luminescent materials were prospected.

Since 20 since the 1970s with light rare earth phosphor commercialization, luminescent materials research has entered a new stage. Because rare earth luminescent materials have many excellent performance and a wide range of uses, glow in the dark stone has become a hot-emitting materials research.


The new rare earth luminescent materials continue to emerge, and with it the emergence of new synthetic methods,glow in the dark dye , in order to further improve the performance of the luminescent material.

People in real life use, luminescent pigment

Luminous long luminescence characteristics, made weak light source, in the military sector with special uses, put this material is applied to the aviation instruments,fluorescent pigments manufacturer watches and clocks, windows, machine various switches signs, door handles, etc., can also be used along with a variety of translucent plastic pressed into a variety of symbols, parts, supplies (such as power switches, sockets, fishing hooks, etc.).

These light-emitting components after light irradiation, or unexpected power outages at night,glow in the dark stones ， getting up after lightning and so it continues to emit light, so that people around discernible direction, bring convenience to work and life.

The ultra-fine particles of luminous materials incorporated in textiles, to make the color more vivid, luminous textile kids wear,glow in the dark sand can reduce traffic accidents.

Glow in the dark dye in science fiction movies

That art originates from life and above life, a lot of things and not just as something, but they can also bring us a new visual feast. For example, in the eight feast, food can be used not only to eat, but also like painting the same for people to enjoy, let's  have a look at glow in the dark dye 's other purposes?

Brazil born photographer Hid Saib neon magnificent atmosphere, and then to model the face coated with special dyes, a light emitting face and science fiction movies,photoluminescent films , the future of human face agree without prior without previous consultation! So as the future people photography theme, how can we not like this one!

The violet or ultraviolet LED chip coated with trichromatic color phosphors or more

decorative gravelCoated with violet or ultraviolet light LED chip or a plurality of colors of trichromatic phosphors, use of the long-wave ultraviolet light emitting chip (370nm-380nm) or violet (380nm -410nm) to excite phosphors to realize white light emission, the method the color is better, but there are also similar problems, and the second method, and the current high conversion efficiency of the red and green phosphors mostly sulfide system, poor stability of such light-emitting phosphors, the light fades large, so development of efficient, low light decay white LED phosphors has become an urgent task.Photoluminescent Rigid Sheets

(YAG) yellow phosphor coating on blue LED chip can be excited by blue light

glow in the dark materialCoated on a blue LED chip can be excited by blue light (YAG) phosphor yellow, blue and yellow phosphor chip emits white light emitted by the complementary formation. The technology is monopolized Japanese Nichia Corporation, and a principle of the shortcomings of this approach is that the phosphor Ce3 + ion emission spectrum does not have a continuous spectrum characteristics, poor color, it is difficult to meet the requirements of low color temperature of lighting, while the luminous efficiency is not high enough, through the development of new phosphors to improve efficiency.Photoluminescent Rigid Sheet

Phosphor hazards:

Photoluminescent Tumbled GravelsSeveral hazards: As phosphors do neon tubes filled process, contain higher amounts of Hg, and therefore the main source of the harm is its dissemination of Hg vapor, authoritative information: mercury vapor 0.04 to 3 mg, it will chronic poisoning people in the February-March; up to 1.2 to 8.5 milligram quantities, can induce acute mercury poisoning, should the amount of 20 mg, will directly lead to death. Once mercury enters the human body, can be quickly dispersed and accumulated to the kidney, chest and other tissues and organs, chronic mercury poisoning can lead to mental disorders, autonomic disorders. Acute symptoms and headache,luminescent sheet fatigue, fever,

sore gums swelling, erosion bleeding, loose teeth and other parts of the skin red spots, pimples, a few kidney damage, individual kidney pain, chest pain, dyspnea, cyanosis acute interstitial pneumonia. Should custody and improper disposal of mercury, but also cause great harm to the environment, which in various forms into the environment, direct contamination of soil, air and water, and then enter the body through the food chain, endangering people's health living, and therefore must not be fluorescent, neon tubes discarded debris everywhere. If the indoor fluorescent tubes cracked, after available iodine of 1 g / cubic meter plus alcohol fumigation or directly with 1 g / cubic meter iodine dispersed on the ground set of 8 to 12 hours, so volatile or sublimation of iodine and mercury in the air to generate hard volatile mercuric iodide, for reducing the concentration of mercury vapor, but also with 5% to 10% of the ferric chloride or 10% bleach rinse contaminated ground