聚合物发光二极管效率与双极电荷阱浓度的关系

4区材料科学 Q2 Engineering

Advances in Materials Science and Engineering Pub Date : 2009-08-05 DOI:10.1155/2009/503042

L. Morgado, L. Alcácer, J. Morgado

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引用次数: 2

摘要

通过同时掺杂空穴和电子俘获分子N, N-双(3-甲基苯基)-N, N-二苯基联苯胺和2-(4-联苯基)-5-(4-叔丁基苯基)-1,3,4-恶二唑，优化了聚[(9,9-二辛基氟壬基-2,7-二基)-1,4-二苯基- 2,3 -恶二唑](F8BT)基发光二极管的效率。结果表明，以聚苯乙烯磺酸掺杂聚(3,4-乙烯二氧噻吩)作为空穴注入层材料和镁阴极的器件，当掺杂质量比为0.34%的聚(3,4-乙烯二氧噻吩)时，效率几乎增加了一倍(从2.5到3.7 cd/A)。

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Polymer Light-Emitting Diodes Efficiency Dependence on Bipolar Charge Traps Concentration

The efficiency of light-emitting diodes (LEDs) based on poly[(9,9-dioctylfluorenyl-2,7-diyl)- alt-1,4-benzo- { 2, 1  -3 } -thiadiazole)], F8BT, is optimized upon simultaneous doping with a hole and an electron trapping molecule, namely, N, N  -Bis(3-methylphenyl)-N, N  -diphenylbenzidine and 2-(4-biphenylyl)-5-(4-tert-butylphenyl)-1,3,4-oxadiazole, respectively. It is shown that, for devices with poly(3,4-ethylene dioxythiophene) doped with polystyrene sulfonic acid as hole-injection layer material and magnesium cathodes, the efficiency is nearly doubled (from ca. 2.5 to 3.7 cd/A) upon doping with ca. 0.34% by weight of both compounds.

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来源期刊

Advances in Materials Science and Engineering Materials Science-General Materials Science

CiteScore

3.30

自引率

0.00%

发文量

审稿时长

4-8 weeks

期刊介绍： Advances in Materials Science and Engineering is a broad scope journal that publishes articles in all areas of materials science and engineering including, but not limited to: -Chemistry and fundamental properties of matter -Material synthesis, fabrication, manufacture, and processing -Magnetic, electrical, thermal, and optical properties of materials -Strength, durability, and mechanical behaviour of materials -Consideration of materials in structural design, modelling, and engineering -Green and renewable materials, and consideration of materials’ life cycles -Materials in specialist applications (such as medicine, energy, aerospace, and nanotechnology)