Slot-die coating of organic thin films for active-matrix organic light-emitting diode displays

Shin, Dong-Kyun; Lee, Jin Young; Hong, Ki-Young; Park, Jongwoon; Seo, Yu-Seok

doi:10.1016/j.tsf.2016.11.001

Cited by 8 publications

(5 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Many articles have reported the slot‐die coating of the hole injecting/transport layers and emissive layers, but very few present the coating of electron injecting/transport layers. [ 24–28 ] Thus, further work on the investigation of slot‐die‐coated electron injection/transport layers is crucial.…”

Section: Introductionmentioning

confidence: 99%

Slot‐Die Coating of All Organic/Polymer Layers for Large‐Area Flexible OLEDs: Improved Device Performance with Interlayer Modification

Amruth

Dubey

Pahlevani

et al. 2021

Adv Materials Technologies

View full text Add to dashboard Cite

Organic light‐emitting diodes (OLEDs) fabricated on flexible transparent substrates have found application in displays, lighting, and signage. Optimization of the fabrication procedures is critical for commercialization to maximize performance and reduce costs. Utilization of the slot‐die coating technique, a solution‐processing roll‐to‐roll method, has emerged as a viable method to manufacture flexible OLED devices. Here, the fabrication of flexible OLEDs via the slot‐die coating technique under ambient condition is reported. The OLEDs have a simple architecture of polyethylene terephthalate (PET)/indium–tin oxide (ITO)/hole injection layer (HIL)/emissive layer (EML)/electron injection layer (EIL)/Ag, where poly(3,4‐ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS) is used as the HIL, Super Yellow (SY, poly(1,4‐phenylenevinylene) copolymer) is used as the EML, and poly((9,9‐bis(3′‐(N,N‐dimethylamino)propyl)‐2,7‐fluorene)‐alt‐2,7‐(9,9‐dioctylfluorene)) (PFN) is used as the EIL. The optimization of the PFN layer using slot‐die coating technique is focused by varying solvent, solvent additives, substrate temperature, and coating speeds. The OLEDs that have PFN layers processed with the known solvent additives, 1,8‐diiodooctane (DIO) or diphenyl ether (DPE), show a performance increase compared to OLEDs based on PFN layers processed with no solvent additives. Finally, large‐area multicolor OLEDs are constructed with organic/polymer layers being slot‐die coated in sequence, of which all display homogeneous luminance under bending/folding conditions, highlighting the potential of this simple device structure and processing method.

show abstract

Section: Introductionmentioning

confidence: 99%

Slot‐Die Coating of All Organic/Polymer Layers for Large‐Area Flexible OLEDs: Improved Device Performance with Interlayer Modification

Amruth

Dubey

Pahlevani

et al. 2021

Adv Materials Technologies

View full text Add to dashboard Cite

show abstract

“…Among various printing and coating techniques that have been developed, the slot-die coating has significant advantages, due to the ability to deposit homogeneous thin films of functional materials with a high degree of reproducibility and with little waste. Many multilayer devices, including organic light emitting diodes (OLEDs) [10], photovoltaics [11], transistors [12], and sensors [13] have been fabricated by partially using this technique for the deposition of some layers. Further, the use of slot-die coating for the up-scaling of OLEDs and photovoltaics using roll-to-roll processing on flexible substrates has been successfully demonstrated [14,15].…”

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

View full text Add to dashboard Cite

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.

show abstract

“…This indicates that the diode exhibits a non-ideal diode behavior which can be attributed to voltage drop through the junction, unavoidable oxide layer, high interface states and series resistance (RS). The value of b higher than that of conventional Au/n-si diodes [16][17][18]. It is concluded that barrier height formed in the Au/n-Si junction can be modified by organic interlayer.…”

Section: Electrical and Photoelectrical Properties Of Au/quercetin-comentioning

confidence: 81%

“…Because, series resistance dominates the voltage drop through the semiconductor-organic interface. To estimate the series resistance and barrier height of diodes Norde proposed a modified current-voltage equation [17] by taking series resistance into account as follows…”

Section: Electrical and Photoelectrical Properties Of Au/quercetin-comentioning

confidence: 99%

Optical, Electrical and Photoelectrical Properties of Quercetin-Co(ii) Complex/N-Si Organic-Inorganic Hybrid Device

Özaydın¹,

TOMBAK²,

Boğa³

et al. 2015

MEJS

View full text Add to dashboard Cite

show abstract

Slot-die coating of organic thin films for active-matrix organic light-emitting diode displays

Cited by 8 publications

References 20 publications

Slot‐Die Coating of All Organic/Polymer Layers for Large‐Area Flexible OLEDs: Improved Device Performance with Interlayer Modification

Slot‐Die Coating of All Organic/Polymer Layers for Large‐Area Flexible OLEDs: Improved Device Performance with Interlayer Modification

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

Optical, Electrical and Photoelectrical Properties of Quercetin-Co(ii) Complex/N-Si Organic-Inorganic Hybrid Device

Contact Info

Product

Resources

About