Process-dependent conductivity and film homogeneity of slot-die-coated PEDOT:PSS–PVA composite films

Riegel, A.‐L.; Reichelt, Nora; Scharfer, Philip; Schabel, Wilhelm

doi:10.1007/s11998-017-9981-y

Cited by 2 publications

(1 citation statement)

References 51 publications

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“…The manufacturing of organic electronic devices using solution-based deposition techniques, such as coating and printing, have drawn extensive attention because they can be upgraded to industrial scale [1,2,3,4,5]. From the commercial point of view these techniques have distinguishable advantages, such as the low-cost of processing and high throughput, as well as being more suitable for fabrication of flexible electronic devices in comparison to vacuum deposition techniques [6,7,8,9].…”

Section: Introductionmentioning

confidence: 99%

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

Amruth

Colella

Griffin³

et al. 2019

Micromachines

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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.

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