| 초록 |
In this work, we have designed, synthesized and characterized four novel hole transporting materials (HTMs) with two different building blocks with same tryphenylamine central core. Which were synthesized by using well known Suzuki coupling reaction with considerable yields. All materials were revealed stable decomposition temperature over 410 °C at 5% weight reduction except HTM 4a. HTM 4b and 5b were exhibited higher glass transition temperature of 216 °C and 181 °C due to its higher rigidity structure. In order to study the device performances, red phosphorescence based devices were fabricated. Additionally, we have constructed the reference device based on NPB as hole transporting material. The device based on HTM 5a as hole transporting material showed excellent maximum current and power efficiencies of 30.3 cd/A and 34.7 lm/W when compare to other synthesized HTMs. HTM 5a was showed similar device characteristics with reference device |
