According to the American physicist organizational network recently reported that Japanese researchers have developed a new technology can replace the copper OLED (organic light-emitting diodes) used in the production of precious metals, which further reduced its cost.
OLED is an increasingly widely used as a display and lighting technology, especially its application in the display is to get a lot of consumers. With traditional LCD (liquid crystal display), , compared, OLED displays with high contrast, thin, wide viewing angle, low energy consumption, fast response, characterized by brilliant colors, green is considered the next-generation display technology.
On the LCD, each pixel is actually a small filter, and the light is behind these pixels, a large backlight. But OLED is different, each pixel is a small light source and, therefore, no backlight. This means that you need to display black, the pixel region can be completely extinguished without consuming electricity. Therefore, compared with LCD, OLED display better, more energy saving. But OLED is used as needed in the production of such reserves Iridium less precious metals, in part for the promotion of OLED technology created obstacles.
Recently, Japan RIKEN (RIKEN) Innovation Center scientists Osawa Masahisa and Canon Inc. of Japan, researchers have developed a new method that can replace these metals with copper.
Daze is a long time that has long been known copper complexes is a potential alternative alternative, less expensive copper complexes, iridium complexes of the cost is 1 / 2000, if the application can be bound to reduce the production of OLED costs. However, prior to the study of the new copper complexes of the external quantum efficiency (EQE) are relatively low. Although this complex can easily be activated to the high-energy state, but will be distorted, , the dissipation of energy in the form of light emission than the energy even more, so far, and luminous efficiency of iridium complexes.
To solve this problem, the researchers changed the molecular environment in which the copper, the copper ions wrapped in several organic ligands being. Experiments confirmed that their approach has been launched on the green of the OLED was a success, , this modified copper complexes outside the electronic efficiency of iridium complexes with very little.
Next, the team will be deployed in the copper complexes in which the work equipment, and verify the display outside the green light in effect. Source: www.mhcmp.com