TY - JOUR
T1 - Sum-frequency generation from surface species in porous silicon
AU - MATTEI, Giorgio
AU - VALENTINI, Veronica
AU - YAKOVLEV, Vladimir
AU - Mani, Alaa Addin
AU - Sartenaer, Yannick
AU - Thiry, Paul
AU - Peremans, André
AU - Caudano, Yves
AU - Dreesen, Laurent
AU - Humbert, Christophe
AU - BUSSON, Bertrand
AU - VIDAL, Franck
AU - TADJEDDINE, Abderrahmane
PY - 2005
Y1 - 2005
N2 - For the first time, the sum-frequency generation (SFG) spectra of surface species have been measured in porous silicon (PS) layers. The range of the vibrations 2000-2300 cm-1 for the native species Si-Hx has been explored. Furthermore for the studied mesoporous materials, it has been found that, as opposed to the infrared absorption, the SFG signal increases with porosity. Finally, the angular dependence and the enhancement of the SFG signal were measured in a one-dimensional PS photonic crystal structure with a defect producing an energy level in the photonic band gap.
AB - For the first time, the sum-frequency generation (SFG) spectra of surface species have been measured in porous silicon (PS) layers. The range of the vibrations 2000-2300 cm-1 for the native species Si-Hx has been explored. Furthermore for the studied mesoporous materials, it has been found that, as opposed to the infrared absorption, the SFG signal increases with porosity. Finally, the angular dependence and the enhancement of the SFG signal were measured in a one-dimensional PS photonic crystal structure with a defect producing an energy level in the photonic band gap.
M3 - Article
VL - 202
SP - 1487
EP - 1491
JO - Physica Status Solidi A -Applications and Material Science
JF - Physica Status Solidi A -Applications and Material Science
IS - 8
ER -