Slot-Die Coating of Double Polymer Layers for the Fabrication of Organic Light Emitting Diodes

被引：22

作者：

Amruth, C. ^{[1
]}

Colella, Marco ^{[2
]}

Griffin, Jonathan ^{[3
]}

Kingsley, James ^{[3
]}

Scarratt, Nicholas ^{[3
]}

Luszczynska, Beata ^{[1
]}

Ulanski, Jacek ^{[1
]}

机构：

[1] Lodz Univ Technol, Dept Mol Phys, PL-90924 Lodz, Poland

[2] Univ Durham, Dept Phys, Durham DH1 3LE, England

[3] Ossila Ltd, Sheffield S4 7WB, S Yorkshire, England

来源：

MICROMACHINES | 2019年 / 10卷 / 01期

基金：

欧盟地平线“2020”;

关键词：

slot-die coating; organic light emitting diodes (OLEDs); printed electronics; large area electronics; BLENDS; EFFICIENCY; ELECTRON; PERFORMANCE;

D O I：

10.3390/mi10010053

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

This study presents the slot-die coating process of two layers of organic materials for the fabrication of organic light emitting diodes (OLEDs). Poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS), which is commonly used in OLEDs and in organic photovoltaic devices as the hole injection layer (HIL), has been deposited via slot-die coating. Uniform films of PEDOT:PSS were obtained after optimizing the slot-die processing parameters: substrate temperature, coating speed, and ink flow rate. The film quality was examined using optical microscopy, profilometry, and atomic force microscopy. Further, poly(9,9-dioctylfluorene) (F8) and poly(9,9-dioctylfluorene-alt-benzothiadiazole) (F8BT), a well know polymer blend F8:F8BT, which is used as an emissive layer in OLEDs, has been slot-die coated. The optoelectronic properties of the slot-die coated F8:F8BT films were examined by means of photoluminescence (PL) and electroluminescence (EL) studies. The fabricated OLEDs, consisting of slot-die coated PEDOT:PSS and F8:F8BT films, were characterized to record the brightness and current efficiency.

引用

页数：14

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