Kyushu University in Japan developed organic EL materials with luminous efficiency of 86%
According to Nature Photonics, an international magazine specializing in optoelectronics, the team led by Anda Qianboya, professor of the “Original Organic Optoelectronics Research Center (OPERA)†at Kyushu University, has developed an organic EL (Electro-luminescence) material with a luminous efficiency of up to 86%. The energy content of the new material for organic molecules is greatly increased from the normal 25% to 86.5%. In addition, an important feature of the new materials is that they do not use precious metals. The advent of this new type of organic EL material will make the development of a new generation of low-power TVs and LED lighting equipment more promising.
The new material consists of two kinds of molecules. According to the “Exciplex luminescence†phenomenon, energy moves between adjacent molecules and emits light. In the past, in the field of organic EL, this phenomenon has been considered to reduce the luminous efficiency. This study subverted this "common sense." (China Science and Technology Network)
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