Products, Materials & Tools | Jan 09, 2013

SemiLEDs Announces Efficiency Improvement for its EV-LED Family

SemiLEDs announced its recent improvements in both epitaxial quality and chip process to its EV- family of LED chips. These improvements allowed a 10% increase in blue chip brightness and 8% decrease in forward voltage (Vf) during mass production, enabling its clients to achieve over 130 lm/W with cool white and 110 lm/W with warm white. The measurements were taken at 350 mA.

With Enhanced Vertical (EV) technology, SemiLEDs was able to increase brightness and lower defects with its new advancements in Epitaxial and Process Technology. Production monitoring showed an increase of 10% in the brightness distribution and improved leakage current yield. The EV technology not only increased the luminous output, but it also enabled a down shift of Vf distribution by 8%, increasing the efficiency by 6~8% at 350mA.

“We are excited about the improvement. Our RD efforts have paid off to further strengthen SemiLEDs position in the LED market” Said Trung Doan, Chairman and CEO of SemiLEDs.

These improvements make SemiLEDs chips suitable for demanding  directional applications such as street lighting, tunnel lighting and indoor retail lighting.

For more information about SemiLEDs EV LED series, please visit www.semileds.com or contact sales@semileds.com.

About SemiLEDs:
SemiLEDs develops and manufactures LED chips and LED components for general lighting, including street lights and commercial, industrial and residential lighting, along with specialty industrial applications such as UV curing, medical/cosmetic, counterfeit detection, and horticulture. SemiLEDs sells blue, green and ultraviolet (UV) LED chips.

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