Electrical and electroluminescent properties of poly(p-phenylene vinylene) LB films based LEDs using aluminum metal as the electrode

被引：9
作者：
Wu, AP
Fujiwara, T
Kakimoto, M
Imai, Y
Kubota, T
Iwamoto, M
机构：
[1] TOKYO INST TECHNOL,DEPT ORGAN & POLYMER MAT,MEGURO KU,TOKYO 152,JAPAN
[2] TOKYO INST TECHNOL,DEPT PHYS ELECTR,MEGURO KU,TOKYO 152,JAPAN
来源：
REACTIVE & FUNCTIONAL POLYMERS | 1996年 / 30卷 / 1-3期
关键词：
electroluminescence; Langmuir-Blodgett films; photoluminescence; light emitting diodes; poly(p-phenylene vinylene);
D O I：
10.1016/1381-5148(95)00126-3
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
The electrical properties of poly(p-phenylene vinylene) (PPV) Langmuir-Blodgett (LB) films were investigated, wherein transparent indium-tin oxide (ITO) and aluminum (Al) were used as the electrodes. Their I-V characteristics depended strongly on the thickness of PPV LB film, and the electric conductivity of the PPV LB film was in the range of 10(-12)-10(-15) (S/cm). Their C-V characteristics showed that the capacitance was reversibly proportional to the thickness of PPV LB film and was kept constant when the applied voltage changed from -1.0 V to +1.0 V. These results indicated that PPV LB film was an insulator in this range of applied voltage without doping. Under forward bias, yellow-green light emission was observed in PPV LB film based light emitting diodes (LEDs), the highest light emission reached more than 100 cd/m(2) in the case that PPV LB film was deposited for 80 layers, i.e. a ITO/PPV(80L)Al device.
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收藏
页码：361 / 365
页数：5
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