Luminescence of porous silicon/terbium organic complex hybrid

A simple but effective doping method to introduce organometallic complexes into porous silicon was developed. Upon hybridization with a Tb-sulfosalicy lic complex, porous silicon emits bright green emission when excited with a n UV light. The photoluminescence spectrum shows that only Tb3+ ions emit e fficiently while the luminescence of porous silicon and organic ligands are almost thoroughly quenched. Based on the Fourier transform infrared and ph otoluminescence measurements, it is proposed that Tb3+ complex was physical ly adsorbed in the pores of porous silicon. The origin of Tb3+ PL was also elucidated from the PL excitation spectrum measurement. (C) 2000 American I nstitute of Physics. [S0003-6951(00)00144-3].