Below-band gap absorption in microstructured silicon

Presentation Date: 

Tuesday, October 24, 2000

Location: 

Optical Society of America Annual Meeting (Providence, RI)

Presentation Slides: 

We report two remarkable properties of silicon surfaces that are microstructured with laser-assisted etching: the absorptance for wavelengths between 0.25 and 2.5 micrometers is 97% or more, and photoelectrons are produced at 1.3 micrometers. We also report chemical and structural analysis of the microstructured material.