ITO-free, inkjet-printed transparent organic light-emitting diodes with a single inkjet-printed Al:ZnO:PEI interlayer for sensing applications

Shu, Zhe; Beckert, Erik; Eberhardt, Ramona; Tünnermann, Andreas

doi:10.1039/c7tc04084a

Cited by 36 publications

(17 citation statements)

References 37 publications

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“…Facing the shortage reserves of Indium, ZnO based TCOs draw people's attention because of their abundant reserves . In AZO or GZO, the substitution of Al 3+ or Ga 3+ for Zn 2+ provides an excess of electrons, forming n‐type semiconductors . By adjusting dopant concentration, one can get various distributions of refractive index and even gradient‐index in AZO/ZnO or GZO/ZnO mixtures.…”

Section: Methodsmentioning

confidence: 99%

Transparent Conductive Oxides and Their Applications in Near Infrared Plasmonics

Wang

Chen

et al. 2019

Physica Status Solidi (a)

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Transparent conductive oxides (TCOs) have been widely used as an important component of optoelectronic devices. They are required to exhibit high performance in both visible-range transparency and electronic conductivity simultaneously. In near infrared (NIR) wavelength, these highly doped semiconductor oxide materials exhibit a drop in their real part of dielectric permittivity from positive to negative. In other words, the epsilon-near-zero (ENZ) frequency of TCO is located in NIR spectral regime. On the other hand, the imaginary part of the permittivity is relatively low which implies less optical loss when compared to noble metals. This "metal-like" permittivity dispersion characteristic of TCOs means their capability to support surface plasmons (SPs) in the NIR regime. In this paper, a summary of various physical parameters of commonly used TCOs such as ITO, AZO, and FTO, etc., is given. These parameters include carrier density, carrier mobility, plasma frequency, and ENZ wavelength. The difference among these parameters determines their diverse performance in infrared range. In this paper, the important role of TCOs for applications in the NIR/IR wavelength ranges are reinforced, as they are demonstrated in the visible range.

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Section: Methodsmentioning

confidence: 99%

Transparent Conductive Oxides and Their Applications in Near Infrared Plasmonics

Wang

Chen

et al. 2019

Physica Status Solidi (a)

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“…Several other types of transparent electrodes have been investigated, including high conductivity polymers such as PEDOT:PSS, graphene‐based and other novel material electrodes, carbon nanotubes, Ag and Cu nanowires, Cu mesh, and a variety of thermally evaporated metal grids . Transparent metal oxides, used together with a metal (grid) contact, can also be evaporated or sputtered, while some metal oxides such as ZnO, Al‐doped ZnO, and WO 3 are routinely being deposited by solution‐processing, including inkjet‐printing …”

Section: The Printed Transparent Conductive Electrode In Organic Elecmentioning

confidence: 99%

Implementing Inkjet‐Printed Transparent Conductive Electrodes in Solution‐Processed Organic Electronics

Hermerschmidt

Choulis

List‐Kratochvil

2019

Adv Materials Technologies

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Through the use of solution‐based materials, the field of printed organic electronics has not only made new devices accessible, but also allows the process of manufacture to move toward a high throughput industrial scale. However, while solution‐based active layer materials in these systems have been studied quite intensely, the printed electrodes and specifically the transparent conductive anode have only relatively recently been investigated. In this progress report, the use of metal nanoparticles within printed organic electronic devices is highlighted, specifically their use as replacement of the commonly used indium tin oxide transparent conductive electrode within organic photovoltaics (OPVs) and organic light emitting diodes (OLEDs). A cross fertilization between the applications is expected since an OPV device is essentially an inversely operated OLED. This report aims to highlight the use of inkjet‐printed nanoparticles as cost‐effective electrodes for printed optoelectronic applications and discusses methods to improve the conductive and interfacial properties. Finally, in an outlook, the use of these types of metal nanoparticle inks to manipulate light management properties, such as outcoupling, in the device is investigated.

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“…[13][14][15][16][17][18][19] But only a few studies reported all solution-processed OLEDs compared to OPVs. [20][21][22][23][24][25] The choice of the materials is the first step to address a lowcost R2R fabrication process. The widely used indium tin oxide (ITO) electrode represents almost half of the cost of an OLED device or an OPV device.…”

Section: Introductionmentioning

confidence: 99%

All solution-processed ITO free flexible organic light-emitting diodes

Murat

Petersons²,

Lanka

et al. 2020

Mater. Adv.

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ITO-free, inkjet-printed transparent organic light-emitting diodes with a single inkjet-printed Al:ZnO:PEI interlayer for sensing applications

Abstract: ITO-free, vacuum-free, inkjet-printed transparent yellow OLEDs with a one-step inkjet-printed Al:ZnO:PEI interlayer.

Cited by 36 publications

References 37 publications

Transparent Conductive Oxides and Their Applications in Near Infrared Plasmonics

Transparent Conductive Oxides and Their Applications in Near Infrared Plasmonics

Implementing Inkjet‐Printed Transparent Conductive Electrodes in Solution‐Processed Organic Electronics

All solution-processed ITO free flexible organic light-emitting diodes

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