Epistar AlGaInP LED Breaks Efficacy Record by 26%
Epistar says that it has successfully developed a new generation of Aquarius-series AlGaInP LEDs emitting at an efficacy claimed to be 26 % higher than the previously announced record on March 15, 2010.
The new record was set by a 0.36mm x 0.36 mm chip in the Aquarius-series and reaches 168 lm/W at a dominant wavelength of 610 nm driven by 20mA current (180 lm/w at 6mA). Applying Epistar Lab’s novel light-extracting technology, the new Lambertian transmission has been demonstrated to increase the efficacy from 133 lm/w to 168 lm/w. 
Fig. 1: New generation of Aquarius-series chips have higher efficacy and lower forward voltage as compared to previously announced AX14.
Figure 1 shows the new generation of Aquarius-series chips with higher efficacy and lower forward voltage as compared to the previously announced AX14. The chip has a horizontal structure and is designed to satisfy chip-on-board packages for lighting applications which require multiple chips in series on nonconductive substrates.
Epistar says this world-leading performance promises to make these small chips a preferred choice for outdoor display, and RGB BLU applications. Furthermore, this advance should allow exceptional warm white LED solutions with higher efficacy and a better color rendering index to be provided via color mixing than can be achieved through conventional conversion of blue LEDs with phosphors.
So far, this new generation of Aquarius-series AlGaInP LED has been primarily demonstrated in Epistar Labs, but plans are already in motion to transfer the technology to Epistar's product line.
Epistar Labs will continue to develop higher efficacy of its AlGaInP LEDs enabling lighting solutions with both high CRI and high efficacy warm white light for lighting applications as well as high performance in RGB BLU.
