| Summary: | 碩士 === 國立臺灣海洋大學 === 光電科學研究所 === 97 === In this thesis, we study new ET-type host materials to apply in
PhOLEDs. The morphological, thermal, and photophysical properties and
electron mobility of these ET-type host materials are affected the device
performance.
In the first part of the work, we found that a series of 1,3,5-triazine
core materials could be used as ET-type host materials. T2T-based devices
achieved high external quantum efficiency (ηext) of 17.5% and power
efficiency (ηp) of 65.2 lm W-1. In the second part of the work, we used both
HT-type host material (DTAF) and ET-type host material (27SFBI) doped
with red complex (OS1) to form simple bi-layer device structure with
double-emission layers (D-EMLs). By this concept, we successfully
simplify structure and improve device efficiency (ηext ~12.3% ).
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