In this paper, the electroluminescence quenching mechanism in a 5,6,11,12-tetraphenylnaphthacene （Rubrene） doped host-guest system is studied by utilizing a specially designed organic light-emitting diode with an em...In this paper, the electroluminescence quenching mechanism in a 5,6,11,12-tetraphenylnaphthacene （Rubrene） doped host-guest system is studied by utilizing a specially designed organic light-emitting diode with an emission layer consisting of a few periodic host/guest structures. Tris-（8-hydroxyquinoline） aluminium （Alq3） and Rubrene are used as the host and the guest, respectively. The thickness variation of the guest layer in each period enables the study of the effect of molecule aggregation, and the thickness variation of the host layer suggests a long range quenching mechanism of dipole-dipole interaction. The long range quenching mechanism is a Forster process, and the FSrster radius of Rubrene is between 3 and 10 nm.展开更多
基金Project supported by the National Natural Science Foundation of China (Grant Nos. 10974013,10774013,10804006 and 60825407)the Research Fund for the Doctoral Program of Higher Education,China (Grant Nos. 20070004024 and 20070004031)+2 种基金the Beijing Science and Technology New Star Program,China (Grant No. 2007A024),and the 111 Project (Grant No. B08002)the Excellent Doctor’s Science and Technology Innovation Foundation of Beijing Jiaotong University,China (Grant No. 141049522)the Research Grants from the Academy of Sciences for the Third World (TWAS)
文摘In this paper, the electroluminescence quenching mechanism in a 5,6,11,12-tetraphenylnaphthacene （Rubrene） doped host-guest system is studied by utilizing a specially designed organic light-emitting diode with an emission layer consisting of a few periodic host/guest structures. Tris-（8-hydroxyquinoline） aluminium （Alq3） and Rubrene are used as the host and the guest, respectively. The thickness variation of the guest layer in each period enables the study of the effect of molecule aggregation, and the thickness variation of the host layer suggests a long range quenching mechanism of dipole-dipole interaction. The long range quenching mechanism is a Forster process, and the FSrster radius of Rubrene is between 3 and 10 nm.
