%0 Journal Article %T Spontaneous emission spectra of organic molecules in synthetic opal photonic crystals %A Guziy O.O. %A Abu Sal B. %A Moiseyenko V.N. %A Dergachov M.P. %J Ukrainian Journal of Physical Optics %D 2008 %I Institute of Physical Optics %X The emission of rhodamine 6G and 2,5-bis(2-benzoxazolyl)hydroquinone molecules embedded in synthetic opal photonic crystals are studied in the spectral range of 520¨C620 nm. It is found that the intensity of spontaneous emission is suppressed in the spectral region corresponding to the photonic stop band and is amplified on its ¡°blue¡± side. %K photonic crystals %K photonic forbidden gap %K stop band %K fluorescence spectra %K photon density of states %U http://www.ifo.lviv.ua/journal/2008/2008_3_9_02.html