High triplet energy electron transport type exciton blocking materials for stable blue phosphorescent organic light-emitting diodes

作者：Kang Yu Jin; Lee Jun Yeob^*

来源：Organic Electronics, 2016, 32: 109-114.

DOI：10.1016/j.orgel.2016.02.025

• Exciton blocking layer
• Dibenzothiophene
• Dibenzofuran
• Diphenyltriazine

High triplet energy electron transport materials with dibenzothiophene and dibenzofuran cores modified with a diphenyltriazine unit were investigated as electron transport type exciton blocking materials for stable blue phosphorescent organic light-emitting diodes. The two exciton blocking materials showed high triplet energy above 2.80 eV and enhanced quantum efficiency of the blue phosphorescent devices by more than 40% while maintaining stability of the pristine blue devices without the high triplet energy exciton blocking layer.

• 出版日期2016-5