Bright red light-emitting organic electroluminescent devices having a europium complex as an emitter

Applied Physics Letters - Tập 65 Số 17 - Trang 2124-2126 - 1994
Junji Kido1, Hiromichi Hayase1, Kenichi Hongawa1, Katsutoshi Nagai1, Katsuro Okuyama1
1Department of Materials Science and Engineering, Yamagata University, Yonezawa, Yamagata 992, Japan

Tóm tắt

Organic electroluminescent (EL) devices with a trivalent europium (Eu) complex as an emitter were fabricated. Triple-layer-type cells with a structure of glass substrate/indium-tin oxide/ triphenyldiamine derivative (TPD)/Eu complex: 1,3,4-oxadiazole derivative (PBD)/aluminum complex (Alq)/Mg:Ag exhibit bright red luminescence upon applying dc voltage. The EL spectrum consists of extremely sharp emission bands, which is a typical luminescence spectrum of the Eu complex. Luminance of 460 cd/m2 with an emission peak at 614 nm is achieved at a drive voltage of 16 V. This is the highest luminance so far obtained for the EL cells having a Eu complex as an emitter.

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Thông tin
Thông tin xuất bản

Applied Physics Letters

Tập 65 Số 17

2124-2126

Thông tin tác giả