Research On The Improvevment Of Blue Fluourescent Emitting Organic Light-emitting Diodes

We have manufactured four blue fluourescent emitting organic light-emitting diodes with LN-1103 SA type Multi Organic Vapor Phase Deposition System.The structure of those diodes is ITO/ MoO3(2 nm)/ NPB(40 nm)/ 1314-TPPI(50-X nm)/ 3TPymb(X nm)/ LiF(0.8nm)/Al,X is assigned to zero,ten,twenty,thirty for the four diffirent diodes.There are two types Brightness&Spectrum tester that are used to test the performance of the four diodes,we have got the relationship curve between current density and voltage,luminance and voltage,current efficiency and voltage,power efficiency and voltage,EL and wavelength.Through the analysis of results of those curves above,we can corroborate that it can improve the performance of blue fluourescent emitting organic light-emitting diodes if we add proper thickness of 3TPymb material as an electron buffer layer. It can raise the conversion efficiency of The internal quantum without changing the characteristics of luminescence improve the overall performance.