Without METAL, the light-emitting efficiency as high as
Do not think that O led technology almost by Korea oligopoly, in fact, the high-end OLED technology continue to develop, not only in Japan, academic institutions continue sophisticated O led lights technology, hoping to achieve more energy-efficient, lower cost production process more simple effect.
"Apex organic optoelectronics research center" (OPERA) from Kyushu University in Japan recently developed only with fluorescent material, but the luminous efficiency of more than 90% of the Hyperfluorescence luminous efficiency of the effect and the use of rare metals "phosphorus" considerable, but the cost is a significant reduced.
Basically, the existing OLED MR16 LED light-emitting materials based on light-emitting principle different, can be broadly divided into fluorescent and phosphorescent materials. The light emitting efficiency of the fluorescent material maximum 25%, and the phosphorescent material is 100%. But when the luminous efficiency of the new material to photoexcitation is as high as with the phosphorescent material. According to the the OPERA center long Kyushu University professor Anda 1000 wave vector of the argument, this is because the new material produced in the thermal activity type delayed fluorescence (TADF) "phenomenon.
Wide selection while maintaining high efficiency light emission color is also a major feature of the material. OPERA produced organic EL panel with luminous colors of blue, green, yellow-green, yellow and orange. The the yellow luminescent materials photoexcitation luminous efficiency of only 26 ± 1%, but the green and yellow-green light-emitting materials luminous efficiency of 74 to 94%, about 47% of the blue and orange light-emitting materials. Although this difference remains to be done, but the OPERA's Andaman Professor commercialization of new materials, you do not need phosphorus this rare metal so it will have a significant impact on organic GU10 LED OLED materials, a relatively greater impact on costs.