Study of efficient and stable organic light-emitting diodes with 2-methyl-9,10-di(2-naphthyl)anthracene as hole-transport material by admittance spectroscopy

被引：23

作者：

Ho, Meng-Huan ^{[1
]}

Hsieh, Ming-Ta ^{[2
]}

Lin, Kuan-Heng ^{[3
]}

Chen, Teng-Ming ^{[1
]}

Chen, Jenn-Fang ^{[2
]}

Chen, Chin H. ^{[3
]}

机构：

[1] Natl Chiao Tung Univ, Dept Appl Chem, Hsinchu 300, Taiwan

[2] Natl Chiao Tung Univ, Dept Electrophys, Hsinchu 300, Taiwan

[3] Natl Chiao Tung Univ, Microelect & Informat Syst Res Ctr, Display Inst, Hsinchu 300, Taiwan

来源：

APPLIED PHYSICS LETTERS | 2009年 / 94卷 / 02期

关键词：

charge injection; doping; electric admittance; fluorescence; hole mobility; organic light emitting diodes; ELECTROLUMINESCENCE; ELECTRON; MOBILITY; ALUMINUM; DEVICES; DEGRADATION;

D O I：

10.1063/1.3072616

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

An organic light-emitting device with enhanced efficiency sby employing 2-methyl-9,10-di(2-naphthyl)anthracene (MADN) as hole-transport material (HTM) has been developed. The admittance spectroscopy studies indicate that using MADN as HTM can reduce the amount of hole carriers injected into the device leading to a well-balanced carrier recombination. The green fluorescent 10-(2-benzothiazolyl)-1,1,7,7-tetramethyl-2,3,6,7-tetrahydro-1H,5H,11H-benzo[l]pyrano-[6,7,8-ij]quinolizin-11-one doped tris(8-quinolinolato)aluminum device achieved a current efficiency of 21.8 cd/A and a power efficiency of 10.4 lm/W at 20 mA/cm(2) that are 65% higher than those of the control device. The green-doped device also achieved a long half-decay lifetime of 22 000 h at an initial brightness of 500 cd/m(2).

引用

页数：3

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