Developers at OSRAM Opto Semiconductors have succeeded in increasing the efficiency of red thin-film LEDs by 30% – a new record. The latest generation of thin-film chips benefit from an optimized chip platform which has potential for further improvements. This boost in efficiency is opening up new LED applications in general illumination, in projection and in the industrial sector.
The chip is accommodated in a Golden Dragon Plus package and emits at a wavelength of 615 nm (l dominant). At present there is no LED with higher efficiency at this wavelength. Its efficiency has been measured at 44% (49% at 70mA), and even exceeds 50% for a wavelength of 642 nm.
Higher efficiency means greater output for the same current and lower power consumption in the relevant applications. You can read some of the coverage this new record at PhysOrg.com or see the official release here.