Black silicon: Microstructuring silicon with femtosecond lasers

Presentation Date: 

Wednesday, November 14, 2001


Physics Colloquium, University of Massachusetts-Lowell (Lowell, MA)

Presentation Slides: 

Our research group has produced a novel form of microstructured silicon ("black silicon") with many surprising properties: near unity absorption, even below the band gap; production of photoelectrons in the visible and infrared; visible luminescence; and a strong field emission current. This talk will describe these properties and what is understood so far about their structural and chemical origin.