University of Utah develops new OLED technology

Researchers report in the latest issue of the journal Science, that they are developing a new type of OLED using a device called an organic spin valve. This device has a three-layer structure with an organic layer in the middle which is equivalent to a semiconductor and a ferromagnetic metal layer on both sides. The organic layer uses a polymer called "æ°˜-DOO-PPV" which emits orange light at a lower cost and improves luminous efficiency. The entire unit is extremely thin and can be mounted inside the tube.

OLED refers to the technology that organic materials emit light under the action of electric field. It has the advantages of active illumination, no backlight, bright color and low power consumption. Researchers believe that OLEDs are expected to replace LEDs currently used in many electronic products such as computers, televisions, and lighting equipment after effectively improving OLED luminous efficiency and reducing manufacturing costs.

Researchers say that this technology still has a lot of limitations. It can only work in low temperature environments for a while, and further technology needs to be improved to meet the requirements for working at room temperature. In addition, it is also desirable to be able to produce OLEDs that produce white light.