Visible Photoluminescence from Porous Silicon
Abstract
The photoluminescence properties of porous Si have been systematically investigated by detailed measurements of the excitation and emission spectra. The strong visible light emission is explained by a model in which the radiative recombination of electron-hole pairs created in the silicon nanostructure occurs through the luminescence centers with strong phonon coupling. A wide band gap energy of the porous Si layer compared to that of bulk Si can explain the excitation spectra of the luminescence.
- Publication:
-
Japanese Journal of Applied Physics
- Pub Date:
- September 1992
- DOI:
- 10.1143/JJAP.31.L1358
- Bibcode:
- 1992JaJAP..31L1358M
- Keywords:
-
- Electron Recombination;
- Photoluminescence;
- Silicon;
- Absorption Spectra;
- Emission Spectra;
- Energy Gaps (Solid State);
- Photoexcitation;
- Solid-State Physics