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Laser-textured silicon photodiode with broadband spectral response
Zhi Li1, Barada K Nayak, Vikram V Iyengar
1Department of Electrical and Computer Engineering, University of Virginia, Charlottesville, Virginia 22904, USA.
Applied Optics
|June 16, 2011
Abstract:
A femtosecond-laser-textured Si photodetector is reported. Broadband spectral optical response is detected from UV to NIR. A quantum efficiency of greater than 80% from 490 nm to 780 nm has been achieved. The quantum efficiency at 245 nm is 62%, which is comparable to UV-enhanced Si photodiodes. The bandwidth of a 250-μm-diameter device is 60 MHz.
