Study of Bulk and Surface States in Porous Silicon
Abstract
In this final report we summarize our findings on the study of Porous Silicon (PSi). We synthesized a variety of PSi films ranging from mesostructures to arrays of nanoparticles of the order of 2nm. We could prepare on regular basis optical quality flat self-supported highly luminescent PSi films. The materials were characterized and we studied their optical, structural and electrical properties. We obtained a correlation between the photoluminescence (PL) properties and the density of surface states, the decay time distribution of the PL signal, and nonlinear properties of the material. We carried out studies of electropolymerization of conductive polypyrrol inside the pores and electroluminescence using liquid electrolyte contacts. We finally synthesized and study nanocrystalline-Si/SiO2 structures prepared by RF sputtering and start to study the emissions from rare-earth dopands (Er and Eu) and their relation with the nanostructure. We applied our findings to the development of UV-enhanced Si-based photodetectors.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 14, 2000
- Accession Number
- ADA386049
Entities
People
- Zvi S. Weisz
Organizations
- University of Puerto Rico