Efficient blue organic light-emitting diodes with graded hole-transport layers
D C Müller1, T Braig, H G Nothofer
1Department Chemie Lehrbereich Physikalische Chemie Ludwig-Maximilians-Universität München Butenandtstrasse 11, 81377 München, Germany.
Abstract:
Using a derivative of the blue-emitting polyfluorene (see the graph for the output spectrum and the inset picture for the color), efficient devices exhibiting a power efficiency close to 2.7 cd A(-1) at 100 cd m(-2) light output were realized.
