Journal
ADVANCED MATERIALS
Volume 18, Issue 14, Pages 1915-+Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.200600588
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Slow photons in photonic crystals are shown to optically amplify the photoactivity of anatase TiO2 in an inverse opal structure. An enhancement in TiO2 absorption as a result of slow photons leads to a larger population of electronhole 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.
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