An approach for preparation of porous silicon/rare earth hybrid — Immersion method

Abstract

A simple but effective doping method, immersion method, was presented. Rare earth complexes [Na3Tb(DPA)3·9H2O and Na3Eu(DPA)3·9H2O] were introduced into porous silicon (PS), where H2DPA is 2,6-dicarboxy pyridine acid. Rare earths were proved to dope into PS effectively by photoluminescence (PL) and X-ray energy dispersive spectroscopy (EDS). And the prepared hybrid samples of PS/RE were found to emit intense room-temperature red and green luminescence while the luminescence of porous silicon are almost thoroughly quenched.