Table 1 Surface groups and quantitative composition for the samples of the functionalized porous silicon
From: Impact of Water Adsorption on Nonlinear Optical Properties of Functionalized Porous Silicon
No | Treatment | Sample | Surface layer | f Si, % | f R, % | f por, % |
|---|---|---|---|---|---|---|
1 | Aged | PS | SiH x, O3SiH, SiOH | 31.5 | – | 68.5 |
1’ | Refreshed | PS-ref | SiH x | 22.6 | – | 77.4 |
2 | Alkylation | PS-C10 | -(CH2)9CH3 | 22.2 | 9.7 | 68.1 |
3 | PS-C18 | -(CH2)17CH3 | 22.6 | 18.4 | 59.0 | |
4 | Chem. oxidized | PS-ox | SiO2 (SiOH) | 28.8 | 6.1 | 65.1 |
PS-ox-H2O | SiO2 (SiOH) | 28.8 | 6.1 | 65.1 a |