Bifunctional Green Iridium Dendrimers with a “Self‐Host” Feature for Highly Efficient Nondoped Electrophosphorescent Devices

Abstract

Better without doping: Use of a dendron with a high carbazole density around an iridium core has been found to improve the performance of nondoped electrophosphorescent devices more effectively than the use of higher-generation dendrimers. A promising efficiency as high as 45.7 cd A−1 (13.4 %) together with a high luminance is obtained for 6 B-G1 (see picture). These values are very close to those of the corresponding doped device. Detailed facts of importance to specialist readers are published as ”Supporting Information”. Such documents are peer-reviewed, but not copy-edited or typeset. They are made available as submitted by the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.