Lately, SemiLEDs has made a breakthrough on its latest ultraviolet LED chips which are capable of emitting radiation at a wavelength of 390-420 nm with 40% external quantum efficiencies (EQEs). The EQE is an LED’s ability to convert electrons into photons. The devices have been tested at 350 mA  and up to an output power of 500 mW and a typical 3.3V forward voltage. The exact output power depends on the wavelength. The present SemiLEDs UV LED products are available in wavelengths ranging from 365nm-420nm, in chip sizes of 1.07 mm x 1.07 mm an...

SemiLEDs Corporation (NASDAQ: LEDS), a leading developer and manufacturer of LED chips and LED components, today announced that its UV LED chips are capable of emitting radiation at a wavelength of 390-420 nm with 40% external quantum efficiencies (EQE – a LED’s ability to convert electrons into photons) at 350 mA (up to 500 mW output power*, typical 3.3V forward voltage). “Our patented structure and metal alloy substrate allow us to produce and supply to the industrial curing market UV LEDs that are capable of operating at high c...