Long-time stabilization of porous silicon photoluminescence by surface modification

作者：Mahmoudi Be^*; Gabouze N; Guerbous L; Haddadi M; Beldjilali K

来源：Journal of Luminescence, 2007, 127(2): 534-540.

DOI：10.1016/j.jlumin.2007.03.002

• porous silicon
• hydrocarbon layer
• photoluminescence
• FTIR spectroscopy
• PL stabilization

We present results on the photoluminescence (PL) properties of porous silicon (PS) as a function of time. Stabilization of PL from PS has been achieved by replacing silicon-hydrogen bonds terminating the surface with more stable silicon-carbon bonds. The composition of the PS surface was monitored by transmission Fourier transform infrared (FTIR) spectroscopy at intervals of 1 month in ageing time up to 1 year. The position of the maximum PL peak wavelength oscillates between a blue-shift and a red-shift in the 615-660 nm range with time.

• 出版日期2007-12