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Amplified Photochemistry with Slow Photons
Author(s) -
Chen J. I. L.,
von Freymann G.,
Choi S. Y.,
Kitaev V.,
Ozin G. A.
Publication year - 2006
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200600588
Subject(s) - photon , anatase , materials science , absorption (acoustics) , absorption edge , photonics , photochemistry , electron , population , molecule , optoelectronics , optics , photocatalysis , physics , band gap , chemistry , catalysis , biochemistry , demography , quantum mechanics , sociology , composite material
Slow photons in photonic crystals are shown to optically amplify the photoactivity of anatase TiO 2 in an inverse opal structure. An enhancement in TiO 2 absorption as a result of slow photons leads to a larger population of electron–hole pairs and faster degradation of organic molecules. A remarkable twofold enhancement is achieved (see figure) when the energy of the slow photons is optimized with respect to the absorption edge of anatase.