This work deals with all aspects of luminescent materials basic, applications and advanced developments.Solid state lighting is an emerging field of research.The book is focus on synthesis of nanophosphors and their applications. We have studied series of rare earth activators e.g., Ce3+, Pr3+, Sm3+, Eu3+, Eu2+, Gd, Dy, Yb in its bulk as well as nanocrystalline form has been synthesized. Material characterization by XRD and SEM was carried out and photoluminescence excitation and emission spectra were measured to explore the possibility of using these phosphors for solid state lighting...

One of the purposes of our work was the development of self-assembled photonic crystal for lowthreshold lasers. We have studied the spectral properties of two types of active PC matrix fabricated by horizontal self-assembly of dye doped polystyrene colloids in ambient conditions. We used nanospheres doped with Rhodamine-B and Fluored dyes with a diameter of 280 nm and 246 nm respectively, as determined by SEM observation and Bragg reflection analysis.