Title: Contribution of excitation in Si nanoparticles to Sm photoluminescence from Sm-doped porous silicon
Abstract: We demonstrate that the Sm photoluminescence processes (including photoexcitation, transfer, and recombination) for Sm-doped porous Si and Sm-doped ${\mathrm{SiO}}_{2}$ are different: In the case of Sm-doped porous Si, there is a process by which electron-hole pairs are excited in Si nanoparticles and then transfer to Sm-related luminescence centers to recombine, in addition to the normal process of Sm-doped ${\mathrm{SiO}}_{2}.$ The ratio of contribution to Sm luminescence of such a process to a normal one decreases with increasing the oxidation temperature. However, it has a complicated relationship with the photoexcitation wavelength. We suggest a method which makes it possible to calculate its value.
Publication Year: 1998
Publication Date: 1998-01-15
Language: en
Type: article
Indexed In: ['crossref']
Access and Citation
Cited By Count: 7
AI Researcher Chatbot
Get quick answers to your questions about the article from our AI researcher chatbot