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An joint R&D team from National Taiwan University (NTU) and National Tsing Hua University (NTHU) has synthesized a platinum complex compound that can form a linear array able to extend efficient light-emitting wavelengths to the near infrared (IR) spectrum (740nm).
The achievement far advances the world record of the efficiency of near IR OLED and is a breakthrough in an emission energy gap law, that is, OLED materials emit little or no light when their light-emitting energy gap decreases close to the near IR spectrum and there is large decay of light arising from exciton-phonon coupling. The platinum complex can result in a large reduction in the negative impact of exciton-phonon coupling thereby allowing efficient light emission at the near IR spectrum.
Near IR OLEDs offer a diversity of lighting and relatively low production costs and can be used, for example, in vehicle proximity sensors. In addition, as near IR light can penetrate organic tissues, near IR OLEDs offer medical applications.
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An joint R&D team from National Taiwan…
