Electron dynamics in unoccupied molecular orbitals of two blue-light-emitting organic electroluminescent materials

被引：6

作者：

Karlsson, HS ^{[1
]}

Read, K

Haight, R

机构：

[1] Royal Inst Technol, Dept Mat Phys, SE-10044 Stockholm, Sweden

[2] Univ Michigan, Ctr Ultrafast Opt Sci, Ann Arbor, MI 48109 USA

[3] IBM TJ Watson Res Ctr, Yorktown Hts, NY 10598 USA

来源：

JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A-VACUUM SURFACES AND FILMS | 2002年 / 20卷 / 03期

关键词：

D O I：

10.1116/1.1467666

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The lowest unoccupied molecular orbital (LUMO) in the two blue-light-emitting organic luminescent materials bis(2-methyl-8-quinolinolato)(para-phenyl-phenolato)aluminium and 1,4-bis(2,2-diphenylvinyl)biphenyl was studied by femtosecond laser pump-and-probe photoemission and compared with tris(8-hydroxyquinoline)aluminum. We have determined the energy gap between the LUMO and the highest occupied molecular orbital and studied the LUMO decay dynamics in these materials. The differences in decay rates are shown to be related to the morphology of the evaporated films. (C) 2002 American Vacuum Society.

引用

页码：762 / 765

页数：4

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