期刊
ORGANIC ELECTRONICS
卷 6, 期 1, 页码 35-45出版社
ELSEVIER
DOI: 10.1016/j.orgel.2005.02.002
关键词
-
资金
- Engineering and Physical Sciences Research Council [GR/S58331/01] Funding Source: researchfish
We have investigated a series of different blends of the device applicable conjugated polymers poly(9,9-dioctylfluorene) [178] and poly(9,9-dioctylfluorene-alt-benzothiadiazole) [F8BT]. Scanning force microscopy indicates that blend films of F8 and F8BT spin-cast from toluene have more coarsely structured phase-separated domains, whereas films cast from chloroform are much more finely structured. This conclusion is confirmed using photoluminescence (PL) measurements, where we show that the degree of energy transfer from F8 to F8BT can be used as a measure of de-mixing in the blend. We have investigated different F8:F8BT blend films as the active semiconductor in light emitting diodes (LEDs). We find that the electroluminescence (EL) efficiency of the LED is a strong function of the relative composition of the blend, with highest efficiency occurring in blends of 95:5 F8:F8BT. In this particular polymer system, the morphological structure of the blend appears less important in determining LED efficiency than does the blend composition. (c) 2005 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据