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首页> 外文会议>Symposium on Spatially Resolved Characterization of Local Phenomena in Materials and Nanostructures Dec 2-6, 2002 Boston, Massachusetts, U.S.A. >Organic Light Emitting Devices Fabricated from Semiconducting Nanospheres
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Organic Light Emitting Devices Fabricated from Semiconducting Nanospheres

机译：由半导体纳米球制造的有机发光器件

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摘要

Organic light emitting diodes (OLEDs) have been fabricated from organic semiconducting polymer nanospheres (SPNs) which have been deposited from aqueous dispersions. The active layer of the devices consists of a single, homogeneous layer of light emitting SPNs, as verified by optical, interferometric and surface probe measurements. Different batches of SPNs with different SPN diameters have been tested (69nm, 95nm, 126nm and 150 nm). All SPN-based OLEDs exhibit a light emission onset corresponding to the SPN energy gap (ca. 2.7 eV for m-LPPP, a semiconducting para-phenylene ladder polymer). The low onset is attributed to field enhanced injection of charge carriers at the aluminum cathode due to the formation of stalactite-type nanostructures. A detailed comparison of the SPN-based and bulk semiconducting polymer films reveals no differences in the basic optoelectronic properties.
机译：有机发光二极管（OLED）已由有机半导电聚合物纳米球（SPN）制成，该聚合物已从水分散体中沉积。器件的有源层由发光SPN的单一均匀层组成，这已通过光学，干涉和表面探针测量验证。已经测试了具有不同SPN直径的不同批次的SPN（69nm，95nm，126nm和150nm）。所有基于SPN的OLED均显示出与SPN能隙相对应的发光起点（对于m-LPPP（一种半导体对亚苯基梯形聚合物），约为2.7 eV。低起因归因于由于钟乳石型纳米结构的形成而在铝阴极处增强了载流子的注入。对基于SPN的半导体材料和块状半导体聚合物膜的详细比较显示，基本的光电性能没有差异。

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