University of Utah, the development of new technologies is expected to achieve a true white OLED

Researchers at the University of Utah have developed a new polymer light emitting device that can be used to debug different colors of light, including white light (without the need to mix several transmitters). This new discovery makes it possible for more efficient and cheaper white OLED in the future.

This device is not a OLED, because it is only in other light (such as laser) to stimulate the light, rather than by the current stimulated luminescence. But researchers say the white OLED based on this technology is likely to be achieved, and they also predict that it will be completed in two years.

The basic idea of this device is to take an organic polymer and insert platinum (Pt) atoms at different intervals. Different intervals are used to emit light of different colors, including white. Therefore, the same molecule can emit different colors of light at the same time, thus forming a white light. The researchers created two versions of the same polymer. Pt- 1 emits purple and yellow light, because there is a platinum atom in each unit or link. Each of the three units in the Pt-3 has a platinum atom that emits blue and orange light.

At the University of Utah physics laboratory, the Pt-1 device emits yellow light

Professor Z. VALY Vardeny, who led the research, said: "some of the existing white LED bulb or mobile phone screen in OLED is not really a white LED, but the use of different materials LED emit different colors, then merge or convert these colors to create white light. The polymer emits light in the blue and red spectral range and can be adjusted to cover the entire visible spectrum. Therefore, it can be used as the active layer of white OLED, which is expected to replace the traditional light bulb. "

According to Vardeny, the whole project is funded by the U.S. Department of energy.