Inkjet printed fluorescent nanorod layers exhibit superior optical performance over quantum dots

Halivni, Shira; Shemesh, Shay; Waiskopf, Nir; Vinetsky, Yelena; Magdassi, Shlomo; Banin, Uri

doi:10.1039/c5nr06248a

Cited by 37 publications

(30 citation statements)

References 54 publications

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“…Jabbour and co-workers also demonstrated patterning by inkjet printing technology of QVGA displays with QDs inks emitting in the red, green and blue [150]. Besides QDs, fluorescent inks based on semiconductor nanorods have also demonstrated to lead to highly concentrated printed layers with little emission shift and high quantum emission yield [151]. …”

Section: Inkjet Printing Of Light Emitting Devicesmentioning

confidence: 99%

Inkjet Printing of Functional Materials for Optical and Photonic Applications

et al. 2016

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Inkjet printing, traditionally used in graphics, has been widely investigated as a valuable tool in the preparation of functional surfaces and devices. This review focuses on the use of inkjet printing technology for the manufacturing of different optical elements and photonic devices. The presented overview mainly surveys work done in the fabrication of micro-optical components such as microlenses, waveguides and integrated lasers; the manufacturing of large area light emitting diodes displays, liquid crystal displays and solar cells; as well as the preparation of liquid crystal and colloidal crystal based photonic devices working as lasers or optical sensors. Special emphasis is placed on reviewing the materials employed as well as in the relevance of inkjet in the manufacturing of the different devices showing in each of the revised technologies, main achievements, applications and challenges.

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Section: Inkjet Printing Of Light Emitting Devicesmentioning

confidence: 99%

Inkjet Printing of Functional Materials for Optical and Photonic Applications

et al. 2016

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“…In contrast to conventional techniques (dip‐coating, spin‐coating, spray‐coating) the inkjet printing process exhibits benefits of faster manufacturability, a lower material to sample casualty rate, and the production of defined areas with less coating material. Plenty of scientists are using inkjet printing for the deposition of metal NCs or semiconductor NCs to manufacture structured electronic components for chip design and sensing . In addition, some works on laser induced 3D printing for the fabrication of porous materials can be found .…”

Section: Introductionmentioning

confidence: 99%

Patterning of Nanoparticle‐Based Aerogels and Xerogels by Inkjet Printing

Lübkemann

Miethe

Steinbach

et al. 2019

Small

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Nanoparticle‐based voluminous 3D networks with low densities are a unique class of materials and are commonly known as aerogels. Due to the high surface‐to‐volume ratio, aerogels and xerogels might be suitable materials for applications in different fields, e.g. photocatalysis, catalysis, or sensing. One major difficulty in the handling of nanoparticle‐based aerogels and xerogels is the defined patterning of these structures on different substrates and surfaces. The automated manufacturing of nanoparticle‐based aerogel‐ or xerogel‐coated electrodes can easily be realized via inkjet printing. The main focus of this work is the implementation of the standard nanoparticle‐based gelation process in a commercial inkjet printing system. By simultaneously printing semiconductor nanoparticles and a destabilization agent, a 3D network on a conducting and transparent surface is obtained. First spectro‐electrochemical measurements are recorded to investigate the charge–carrier mobility within these 3D semiconductor‐based xerogel networks.

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“…QDQRs are applied as fluorescent reporters e.g., in bioanalysis and microscopy, 1,2 and optoelectronic components in photovoltaics, light-emitting diodes (LEDs), and liquid crystal displays (LCDs). [3][4][5][6] Such QDQRs can have different aspect ratios, i.e., different ratios of their length and thickness, and are commonly covered by a coordinatively bound shell of organic ligands controlling their stability and dispersibility. A typical example are CdSe/ZnS or CdSe/CdS QDQRs bearing non-polar surface ligands like hydrophobic amines, phosphonic acids, TOP/TOPO, or mixtures of these ligands.…”

Section: Introductionmentioning

confidence: 99%

Excitation wavelength dependence of the photoluminescence quantum yield and decay behavior of CdSe/CdS quantum dot/quantum rods with different aspect ratios

Geißler

Würth

Wolter

et al. 2017

Phys. Chem. Chem. Phys.

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The excitation wavelength (λ) dependence of the photoluminescence (PL) quantum yield (Φ) and decay behavior (τ) of a series of CdSe/CdS quantum dot/quantum rods (QDQRs), consisting of the same spherical CdSe core and rod-shaped CdS shells, with aspect ratios ranging from 2 to 20 was characterized. λ between 400-565 nm were chosen to cover the first excitonic absorption band of the CdSe core material, the onset of absorption of the CdS shell, and the region of predominant shell absorption. A strong λ dependence of relative and absolutely measured Φ and τ was found particularly for the longer QDQRs with higher aspect ratios. This is attributed to combined contributions from a length-dependent shell-to-core exciton localization efficiency, an increasing number of defect states within the shell for the longest QDQRs, and probably also the presence of absorbing, yet non-emitting shell material. Although the Φ values of the QDQRs decrease at shorter wavelength, the extremely high extinction coefficients introduced by the shell outweigh this effect, leading to significantly higher brightness values at wavelengths below the absorption onset of the CdS shell compared with direct excitation of the CdSe cores. Moreover, our results present also an interesting example for the comparability of absolutely measured Φ using an integrating sphere setup and Φ values measured relative to common Φ standards, and underline the need for a correction for particle scattering for QDQRs with high aspect ratios.

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Inkjet printed fluorescent nanorod layers exhibit superior optical performance over quantum dots

Cited by 37 publications

References 54 publications

Inkjet Printing of Functional Materials for Optical and Photonic Applications

Inkjet Printing of Functional Materials for Optical and Photonic Applications

Patterning of Nanoparticle‐Based Aerogels and Xerogels by Inkjet Printing

Excitation wavelength dependence of the photoluminescence quantum yield and decay behavior of CdSe/CdS quantum dot/quantum rods with different aspect ratios

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