Photoactive periodic media

Ben-Messaoud, Tahar; Riordon, Jason; Melanson, Alexandre; Ashrit, P. V.; Haché, Alain
March 2009
Applied Physics Letters;3/16/2009, Vol. 94 Issue 11, p111904
Academic Journal
Photoactive (photochromic) multilayers of MoO3/SiO2 are studied optically before and after UV excitation. Enhancement in photochromic activity is observed over a wide spectrum and in particular near the photonic band edges where optical changes are up to 25 times greater than in similarly prepared bulk, nonperiodic samples. Applications to light-sensitive devices are discussed.


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