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Osram Opto Semiconductors Claims Prototype infrared Chip is 72% Efficient

Time: 2012-7-28 14:56:12  |  Source:Greenergy technology co., ltd  |  Author: admin

December 5, 2012...Osram Opto Semiconductors has produced a new 1 mm2 infrared chip prototype that the company says has achieved a new record with an efficiency of up to 72 percent at 100 milliamps using thin-film technology. The company asserts that at 930 milliwatts from an operating current of 1 amp, its light output under laboratory conditions is 25 percent higher than that of the chips currently available on the market, which means that future infrared LEDs can be made even more energy-efficient.

The efficiency, known as wall plug efficiency (WPE), indicates the ratio of the radiated power to the electrical input power. It was measured at room temperature at a DC current of up to 1 amp. With a wavelength of 850 nanometers, the chip has been designed specifically for infrared illumination applications.

The results were achieved at Osram R&D laboratory in Regensburg, Germany. The company says that the prototype infrared chip has a high quantum efficiency that remains around 65 percent up to 1 amp. Osram Opto Semiconductors says that the 850 nanometer wavelength of the chip prototype is perfect for infrared illumination, particularly for surveillance tasks and use with CCTV cameras. The LED also has potential safety applications in the automotive sector, such as precrash sensors and illumination sources for night vision systems.

“The way in which the efficiency and brightness have been increased can be transferred from 850 nanometers to other wavelengths,” said Markus Bröll, Project Manager for the development of IRED chips at Osram Opto Semiconductors in Regensburg. “This means that it will be possible to create highly energy-efficient solutions for infrared lighting in the future." Fewer components will be needed in multi-chip applications, he added, saving both money and energy.

The results of this development work are now being implemented stage by stage. The new chip is expected to go into series production by the middle of 2013.

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