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2005
Conference Paper
Titel
Polymer matrix based phosphorescent emitters
Abstract
In this paper, we describe the synthesis of a new polyvinyl-carbazole with blocked 3,6-position. As a result of the substitution with tert.-butyl groups the HOMO energy level is shifted to -5,4 eV which allows a better adaption to the work function of PEDOT/PSS. The improvement in hole injection leads to a more efficient device and therefore it is not necessary to add any further hole transporting material.