Abstract
首次报道掺稀土多孔硅的恒电位电解法和稀土硝酸盐-支持电解质-非乙醇有机溶剂的电解体系。这一新方法和新体系具有易于控制电解产物，可掺入高浓度稀土(1021/cm3以上)，自主控制掺入稀土的浓度并显著增强多孔硅室温光致发光的优点。研究了溶剂、外加电压、Eu(NO3)3浓度及电解时间对多孔硅(PS)室温光致发光的影响，优化了恒电位电解法制备掺铕多孔硅的条件，获得了室温光致发光强度高于多孔硅的PS∶Eu，实验发现，掺Eu后波长蓝移。讨论了多孔硅和掺铕多孔硅的光致发光机制。
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) | 750-753 |
| Number of pages | 4 |
| Journal | 高等学校化学学报 |
| Volume | 20 |
| Issue number | 5 |
| Publication status | Published - 10 May 1999 |
User-Defined Keywords
- 多孔硅
- 铕
- 恒电位电解
- 光致发光
- Porous silicon
- Europium
- Constant potential electrolysis
- Photoluminescence