OLED with Hole-Transporting Layer Fabricated by Ink-Jet Printing

被引：2
|
作者：
Villani, F. [1 ]
Vacca, P. [1 ]
Miscioscia, R. [1 ]
Nenna, G. [1 ]
Burrasca, G. [1 ]
Fasolino, T. [1 ]
Minarini, C. [1 ]
della Sala, D. [2 ]
机构：
[1] Portici ENEA Res Ctr, I-80055 Portici, NA, Italy
[2] Casaccia ENEA Res Ctr, I-00123 Santa Maria Di Galeria, Italy
来源：
MACROMOLECULAR SYMPOSIA | 2009年 / 286卷
关键词：
electrical and optical properties; hole-transporting layers; ink-jet printing; OLED; polymer; PATTERN-FORMATION; DEVICES; POLYMERS; DIODES; DROPS;
D O I：
10.1002/masy.200951213
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
We report about the fabrication of organic light-emitting diodes (OLEDs) ink-jet printing a hole-transporting polymer (PF6, poly(9,9-dihexyl-9H-fluorene-2,7-diyl)) on flexible substrate (PET) and performing the other layers through vacuum thermal evaporation. The aim of the work is to employ the ink-jet printing (IJP) technology, familiar as a method for printing on paper, in optoelectronic applications and to determine how the deposition method affects the functional material film properties and hence the ultimate device performances. In this line of work, ink-jet printed polymer films are compared to same spin-coated polymer from the electro-optical point of view: both prepared materials are adopted as HTLs of electroluminescent devices. All manufactured OLEDs are characterized and their behaviours are investigated and analyzed with theoretical models. The results show differences in current density and optical behaviours between the devices fabricated by means of the above mentioned technologies which can be justified in terms of different trap distribution induced by impurity energy levels associated to each process.
引用
收藏
页码：101 / 106
页数：6
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