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Obituary for Professor Volker Romheld (1941-2013)
(Springer, Dordrecht, 2014)
Degradation of thin 4,4′-bis(2,2′diphenyl vinyl)-1,1′-biphenyl films by UV light
(Materials Research Society of Serbia, 2014)
We studied degradation of 4,4′-bis(2,2′diphenyl vinyl)-1,1′-biphenyl (DPVBi), well know OLED material. Thermally evaporated thin films of DPVBi were irradiated with UV light in ambient, vacuum and under different oxygen ...