Effect of high-pressure water-vapor annealing on energy transfer in dye-impregnated porous silicon

Optical and electrical properties of porous silicon impregnated with Congo Red dye

“…In our previous work, 1,14,15 we have shown that FTIR spectroscopy revealed the incorporation of dye molecules in the PS layer. The FTIR spectra of PS alone, CR-PS nanocomposite were shown in Figure 1(a).…”

“…In particular, the open porous structure and the very large specific surface area make porous silicon (PS) ideal candidates to host specific organic molecules (dyes, surfactants, polymers, etc.). [1][2][3][4] The incorporation of organic dyes into solid-state matrix is attracting wide interest because of useful applications such as light concentrators in solar cells, optical waveguides, laser materials, sensors, and nonlinear materials. [5][6][7][8][9][10] Embedding those molecules in a rigid matrix leads to isolating of the active species that suppresses intermolecular interactions and intermolecular rearrangements, protects the active molecule from the environmental attack and/or photofragmentation, and increases the material life time.…”

Functional Device Applications of Nanosilicon

“…Possible application of phosphorescence is photon energy transfer from host matrix to doped guest (dye molecules or rare earth elements). Even in fast luminescent nc-Si layers impregnated with rhodamine B, rhodamine 6G, or both, energy transfer from red emission to doped dyes has been suggested from analysis of the PL polarization memory [7,8]. Energy transfer effect should be enhanced by using blue phosphorescent nc-Si samples as a host, and then could find many functional photonic applications.…”