The project Skolkovo "Lighting technology based on organic light-emitting diodes" Company "OptoGaN" managed to achieve record performance OLED
Thanks to its unique technology, which is used in the emission layer of organic light-emitting diodes polymer nanocomposites based on inorganic quantum dots, which are effective radiative recombination centers, the company "OptoGaN-SRF", within the framework of the project "Skolkovo" "Lighting technology based on organic light-emitting diodes" managed to achieve record levels of organic light-emitting diodes based on organic polymers. Thus, when the term of life of 50 000 hours of OLED efficiency was — 35 lm / W and a brightness — 1000 cd/m2.
By changing the size and elemental composition of the quantum dots can be specified emission wavelength of the organic light emitting diode. Thus, through use of quantum dots in an emission layer can be obtained by radiation in the red, blue and green regions of the spectrum, which upon mixing is white. For the manufacture of the polymer nanocomposite used colloidal quantum dots based on semiconductor compounds AIIBVI, produced by the original patented technology, developed together with the company "STRC" Nanotech-Dubna ".
"The barrier of 35 lm / W is significant for the technology, which uses exactly the polymers and their nanocomposites, applied by the method of liquid printing. Such technology can significantly (10 times) reduce the cost of production of organic light-emitting diodes as compared to the already state of art technology of vacuum deposition of small organic molecules in the manufacture of OLED. Furthermore, it allows LEDs flexible and transparent substrates, and also significantly increase the area of the illuminated surface that essentially impossible in case molecular deposition, because the size of the chamber dimensions are determined by the diode and the deposition conditions of uniformity of the spray " — Says chief scientist of "OptoGaN-OCP" Dr. Paul Brunkow.
The structure of the organic LED is patented and includes original injection and transport layers are optimized in the course of close scientific cooperation with the PN Lebedev Physics Institute. PN Lebedev. In the future, the company plans to continue to develop and raise the efficiency index of up to 60 lumens / watt.