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Hamamatsu Corp. - Earth Innovations LB 2/24

Building a Better Detector with Black Silicon

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Photodetector shows responsiveness to wavelengths as large as 1.6 μm.

Hank Hogan

Exploiting an accidental discovery, researchers at the University of Texas at Austin, at Harvard University in Cambridge, Mass., and at the University of Virginia in Charlottesville have developed a silicon photodetector that has a high responsivity from 600 to 1100 nm. Built of black, or microstructured, silicon, the detector’s photoresponse extends to 1.6 μm, well beyond the 1.07 μm provided by standard silicon. Photodetectors based on black silicon — formed by irradiating silicon with femtosecond laser pulses while exposing it to a sulfur-containing gas — exhibit a spectral...Read full article

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    Published: October 2006
    industrialmicronsMicroscopyResearch & TechnologySensors & Detectorssilicon photodetectorsulfur hexafluoride

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