Near-infrared emission from organic light-emitting diodes based on copper phthalocyanine with a periodically arranged Alq3:CuPc/DCM multilayer structure

被引：7

作者：

Guo Zhen-Giang ^{[1
]}

Cheng Chuan-Hui ^{[2
]}

Fan Zhao-Qi ^{[2
]}

He Wei ^{[2
]}

Yu Shu-Kun ^{[1
]}

Chang Yu-Chun ^{[1
]}

Du Xi-Guang ^{[3
]}

Wang Xu ^{[4
]}

Du Guo-Tong ^{[1
,2
]}

机构：

[1] Jilin Univ, Coll Elect Sci & Engn, State Key Lab Integrated Optoelect, Changchun 130012, Peoples R China

[2] Dalian Univ Technol, Sch Phys & Optoelect Technol, State Key Lab Mat Modificat Laser Ion & Elect Bea, Dalian 116024, Peoples R China

[3] NE Normal Univ, Dept Chem, Changchun 130024, Peoples R China

[4] Jilin Univ, Dept Chem, State Key Lab Supramol, Changchun 130012, Peoples R China

来源：

CHINESE PHYSICS LETTERS | 2008年 / 25卷 / 02期

关键词：

D O I：

10.1088/0256-307X/25/2/098

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We demonstrate near-infrared organic light-emitting devices with a periodically arranged tris(8-quinolinolato)aluminum (Alq(3)):copper phthalocyanine (CuPc)/4-(dicyanomethylene)-2-methyl-6-(4-dimethylaminost-yry)-4H-pyran (DCM) multilayer structure. DCM and Alq(3) doped with CuPc were periodically deposited. Room-temperature electrophosphorescence was observed at about 1.1 mu m due to transitions from the first excited triplet state to the singlet ground state (T-1 - S-0) of CuPc. In this device, we utilize the overlap between the Q band pi - pi* at about 625 nm of the absorption spectra of CuPc and the PL spectra of the DCM. The near-infrared emission intensity of the CuPc-doped Alq(3) device with DCM increases about 2.5 times larger than that of the device without DCM. We attribute the efficiency enhancement to the better overlap between the PL spectra of DCM and the absorption spectra of CuPc.

引用

页码：715 / 718

页数：4

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