| 초록 |
New electron type host, 2,8-bis(4,6-bis(3,5-di-tert-butylphenyl)-1,3,5-triazin-2-yl)dibenzo[b,d]furan (DBFtTrz) was synthesized to make intermolecular interaction weaker by substituting tert-butyl group in triazine moiety. In photoluminescence (PL) measurement, the t-butyl substituted electron type host showed blue-shifted emission in exciplex formation both singlet and triplet energy compared with n-type host which has no t-butyl substitution. In device, the new synthesized n-type host pair showed higher external quantum efficiency (17.3%). |
