|
|||||
|
|
Thermally promoted addition of undecylenic acid on thermally hydrocarbonized porous silicon optical reflectors |
|
| Authors: | Tero Jalkanen Ermei M?kil? Tetsuo Sakka Jarno Salonen Yukio H Ogata |
| Affiliation: | 1.Institute of Advanced Energy, Kyoto University, Uji, Kyoto, 611-0011, Japan;2.Department of Physics and Astronomy, University of Turku, Turku, FI-20014, Finland;3.Turku University Centre for Materials and Surfaces, University of Turku, Turku, FI-20014, Finland |
| Abstract: | Thermally promoted addition of undecylenic acid is studied as a method for modifying porous silicon optical reflectors that have been pre-treated with thermal hydrocarbonization. Successful derivatization of undecylenic acid is demonstrated and confirmed with Fourier transform infrared and X-ray photoelectron spectroscopies. The results indicate that the hydrocarbonization pre-treatment considerably improves stability against oxidation and chemical dissolution in basic environments. The two-step treatment also does not cause an appreciable change on sample reflectance spectra, which enables the use of the functionalized structures in optical sensing applications. |
| Keywords: | Porous silicon Interference filter Optical microcavity Chemical stability |