Articles you may be interested inDistinguishing triplet energy transfer and trap-assisted recombination in multi-color organic light-emitting diode with an ultrathin phosphorescent emissive layer
The current status of the development of Organic Vapor Phase Deposition technology (OVPD) for the manufacturing of OLEDs will be reviewed. The basic OVPD principle is explained and typical performance data will be presented. Starting from a small scale R&D setup, the development of larger OVPD systems up to the first mass production unit is described. Special emphasis is put on the scalability of the process. The successful up‐scaling of the OVPD principle is supported by extensive numerical modeling that is also described.
We investigate the temperature-and flux-dependent roughening of amorphous organic thin films of N,N-diphenyl-N,N-bis(1-naphthyl)-1-1 biphenyl-4,4 diamine (α-NPD) molecules grown by organic vapor phase deposition. We find that organic thin films become unstable at high temperatures and low deposition rates as well as at low temperatures and high deposition rates. Based on a detailed stochastic analysis of the morphology we suggest probable mechanism for the roughening phenomena. Indeed, this result allows us to identify the optimum deposition conditions for relevant technological applications.
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