| 초록 |
Two related emitting compounds as shown in next page, namely, 9,10-Bis-[1,1';3',1'']terphenyl-5'-yl-1,5-di-o-tolyl-anthracene [TP-DTA-TP] and 9,10-Bis-[1,1';3',1'']triphenylbenzene-5'-yl-1,5-di-o-tolyl-anthracene [TPB-DTA-TPB] were synthesized through typical boration, Suzuki and Sandmeyer reactions. In here, the EL performance was improved by varying the chemical structures of the side groups. Physical properties such as optical, electrochemical, and electroluminescent properties were investigated. OLED device using TP-DTA-TP showed C.I.E. value of (0.36, 0.53) and luminance efficiency of 3.58 cd/A at 10mA/cm2. TPB-DTA-TPB device exhibited C.I.E. value of (0.17, 0.23) and high luminance efficiency 4.85 cd/A at 10mA/cm2. It was found that TPB-DTA-TPB showed better luminance efficiency and better C.I.E. value than TP-DTA-TP device because it had the increased size of side group. |
