| Affiliation: | Department of Electrical Engineering, The Institute of Optics, Department of Physics and Astronomy, and Laboratory for Laser Energetics, Computer Studies Building, Room 514, University of Rochester, Rochester, NY 14627, USA |
| Abstract: | The properties and origins of the red, blue and infrared photoluminescence bands of porous silicon are reviewed and discussed in the light of the models that have been proposed to explain the experimental and theoretical results. The red band is due to quantum confinement possibly supplemented by surface states; the blue band is linked to the presence of silicon dioxide; the infrared band is correlated with dangling bonds and bandgap luminescence in large crystallites. The fabrication and characterization of light-emitting devices made of porous silicon are reported and discussed with respect to critical issues such as the device stability, efficiency, modulation speed, emission wavelength, and compatibility with microelectronic processing. |
