The objectives and scope of the investigation has been mentioned. It is stated that the main objective of present study is to investigate the EL of ROPPV films.ROPPV is semiconducting conjugated polymer semiconducting conjugated polymer.The study has been made by intersect that following point: (I) Preparation of thin film and thickness measurement(II)Absorption study of ROPPV polymer,(III) Photo lumenescence studies of 2-5-dialoxy -poly-P-vinelene(ROPPV) Films,(IV)Preparation of EL cells(V) Theoretical studies of EL in thin films. Several intense EL materials have been prepared, Whose EL emission can be seen in the ultraviolet region. An attempt has been to correlated results obtained from the EL & PL studies of ROPPV polymer films. The thickness dependance optical property of ROPPV films is summarized. The theoretical approach is made to the solids comparison made between the theoretical and experimental results The conclusions drawn from the present investigation are summarized and the perspectives for the future research on ROPPV thin films have been given.