Optical and electronic characterization of the band structure of blue methylene and rhodamine 6G-doped TiO2 sol-gel nanofilms. - Sergio A. Tomás; Rodolfo Palomino; R. Lozada; E. F. da Silva Jr; Elder A. de Vasconcelos; W. M. de Azevedo; C. Persson; I. Pepe; Dennis G. F. David; Antônio Ferreira da Silva (Microelectron. J., 2005)