Bright, saturated, red-to-yellow organic light-emitting devices based on polarization-induced spectral shifts
Bright, saturated, red-to-yellow organic light-emitting devices based on polarization-induced spectral shifts
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DOI：
10.1016/s0009-2614(98)00168-7
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发表时间：
1998-05-01
影响因子：
2.8
通讯作者：
Forrest, SR
中科院分区：
文献类型：
--
作者：
Bulovic, V;Shoustikov, A;Forrest, SR
我们展示了红色、橙色和黄色有机发光器件（OLED），其电致发光层由掺杂有激光染料 DCM2 的三（8-羟基喹啉）铝（Alq(3)）组成，发射颜色取决于 DCM2 的浓度。发现峰值发射波长偏移高达 50 nm，这是由于强偏振效应造成的。对于红色和黄橙色 OLED，测得的最大亮度为 1400 cd/m(2) 和 15200 cd/m(2)，在 100 mA/cm(2) (14 V) 和 10 mA/cm(2) (12 V) 下分别达到 100 cd/m(2) 的亮度。这些器件的电流与电压依赖性与陷阱限制传导一致，不受 DCM2 存在的影响。 (C) 1998 Elsevier Science B.V. 保留所有权利。
We demonstrate red, orange, and yellow organic light-emitting devices (OLED) with the electroluminescent layer consisting of aluminum tris(8-hydroxyquinoline) (Alq(3)) doped with laser dye DCM2, with the emission color dependent on the concentration of DCM2. A peak emission wavelength shift of up to 50 nm is found to be due to strong polarization effects. For red and yellow-orange OLEDs, a maximum luminance of 1400 cd/m(2) and 15200 cd/m(2) is measured, with a luminance of 100 cd/m(2) attained at 100 mA/cm(2) (14 V) and 10 mA/cm(2) (12 V), respectively. The current versus voltage dependencies of these devices are consistent with trap-limited conduction, unaffected by the presence of DCM2. (C) 1998 Elsevier Science B.V. All rights reserved.