Abstract
A novel electrochemical approach, constant-potential electrolysis and a new electrolyte system, rare earth nitrate-supporting electrolyte substance-nonethanol organic solvent, for doping of porous silicon(PS) with europium were reported. By this approach and system, the doping products were well controlled, and a high concentration of Eu(about 1021/cm3) was doped into PS. The effects of solvents, applied voltage, concentration of Eu(NO3)3 and doping time on photoluminescence of Eu-doped PS were investigated, and the optimum doping conditions were optimized. PS : Eu prepared under suitable conditions was found to emit much more intense visible room-temperature luminescence with blue-shift in wavelength than that of corresponding PS wafer. The photoluminescence mechanism for PS and PS : Eu was also discussed.
| Translated title of the contribution | Preparation of Europium-doped Porous Silicon by Constant-potential Electrolysis and Photoluminescence of Porous Silicon: Eu |
|---|---|
| Original language | Chinese (Simplified) |
| Pages (from-to) | 753 |
| Number of pages | 1 |
| Journal | 高等学校化学学报 |
| Volume | 20 |
| Issue number | 5 |
| Publication status | Published - 10 May 1999 |
Scopus Subject Areas
- Chemistry(all)
User-Defined Keywords
- Constant-potential electrolysis
- Europium
- Photoluminescence
- Porous silicon