Printable CsPbBr<sub>3</sub> perovskite quantum dot ink for coffee ring-free fluorescent microarrays using inkjet printing

Gao, Aijing; Yan, Jia; Wang, Zhaojin; Liu, Pai; Wu, Dan; Tang, Xiaobing; Fang, Fan; Ding, Shihao; Li, Xiang; Sun, Jiayun; Cao, Meijuan; Wang, Liduo; Li, Luhai; Wang, Kai; Sun, Xiao Wei

doi:10.1039/c9nr09651e

Cited by 85 publications

(76 citation statements)

References 45 publications

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“…obtained coffee ring‐free CsPbBr 3 fluorescent microarrays by inkjet printing a mixed solvent ink. [ 25 ] Lien et al. prepared patterned CsPbBr 3 QD CCFs by using the inkjet printing and UV‐light curing.…”

Section: Introductionmentioning

confidence: 99%

In Situ Inkjet Printing Patterned Lead Halide Perovskite Quantum Dot Color Conversion Films by Using Cheap and Eco‐Friendly Aqueous Inks

et al. 2020

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Inkjet‐printed perovskite quantum dot (PQD) color conversion films (CCFs) have great potentials for mini/micro‐LED displays because of their ultrahigh color purity, tunable emissions, high efficiency, and high‐resolution. However, current PQD inks mainly use expensive, toxic, and flammable organic substances as solvents. In this work, water is proposed to be used as the solvent for inkjet printing PQD/polymer CCFs. The green‐emitting patterned MAPbBr3/polyvinyl alcohol (PVA) films are in situ prepared by using halides and the PVA‐based aqueous ink. The as‐printed CCFs exhibit a high‐resolution dot matrix of 90 µm with a bright green emission (λem = 526 nm), a high photoluminescence quantum yield of 85%, and a narrow full width at half maximum of 22 nm. They have both air‐ and photo‐stabilities under ambient conditions, and each pixel of CCFs is relatively uniform in morphology and fluorescence when the substrate temperature is 80 °C. The patterned blue‐emitting MAPbClxBr3‐x/PVA and red‐emitting Cs0.3MA0.7PbBrxI3‐x/PVA can also be printed by aqueous inks. These results indicate that the designed aqueous inks are promising for in situ inkjet printing high resolution and reliability PQD CCFs for mini/micro‐LED displays.

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Section: Introductionmentioning

confidence: 99%

In Situ Inkjet Printing Patterned Lead Halide Perovskite Quantum Dot Color Conversion Films by Using Cheap and Eco‐Friendly Aqueous Inks

et al. 2020

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“…Far-field measurement of tags of optical nanomaterials for security purposes has been discussed in existing literature, including constellation mapping 35 , or spatially-dependent division of the tag into individual measurement points for individual spectra 36,37 . Nanoparticle PUFs based on inks with random pinning points have been measured with fluorescence microscopy 38,39 and smartphone cameras 19 .…”

Section: Resultsmentioning

confidence: 99%

Hotspot generation for unique identification with nanomaterials

Abdelazim

Fong

McGrath

et al. 2021

Sci Rep

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Nanoscale variations in the structure and composition of an object are an enticing basis for verifying its identity, due to the physical complexity of attempting to reproduce such a system. The biggest practical challenge for nanoscale authentication lies in producing a system that can be assessed with a facile measurement. Here, a system is presented in which InP/ZnS quantum dots (QDs) are randomly distributed on a surface of an aluminium-coated substrate with gold nanoparticles (Au NPs). Variations in the local arrangement of the QDs and NPs is shown to lead to interactions between them, which can suppress or enhance fluorescence from the QDs. This position-dependent interaction can be mapped, allowing intensity, emission dynamics, and/or wavelength variations to be used to uniquely identify a specific sample at the nanoscale with a far-field optical measurement. This demonstration could pave the way to producing robust anti-counterfeiting devices.

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“…In this case, the “coffee ring” effect may be inhibited by preventing the pinning of the contact line, tuning the distribution of the capillary flow toward the contact line, and suppressing the solutes being moved to the droplet edge by the capillary flows [45c] . Through mixing a high‐boiling‐point solvent of dodecane with a low‐boiling‐point one of toluene to disperse the perovskite quantum dots, the “coffee ring” effect was effectively suppressed, enabling the fabrication of perovskite microarrays with a uniform and flat surface [ 55 ] (Figure 5g). The mechanism behind the suppressed “coffee ring” by mixing two solvents with different boiling points was explained as the formation of appropriate Marangoni flow, which shows great potential to balance the capillary flow and therefore eliminates the “coffee ring” effect (Figure 5f).…”

Section: Mask‐free Nanostructured Mhpsmentioning

confidence: 99%

Recent Progress on Patterning Strategies for Perovskite Light‐Emitting Diodes toward a Full‐Color Display Prototype

et al. 2021

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Perovskite light‐emitting diodes (PeLEDs) have attracted both academic and industrial interest because of their high efficiency, wide color gamut as well as low material and fabrication costs. However, most state‐of‐the‐art PeLEDs are still fabricated with commonly used spin‐coating methods, which are undesirable for large‐scale commercial production. Achieving highly emissive perovskite microarrays at high spatial resolution with quick and large‐scale growth is one of the critical steps to integrate state‐of‐the‐art PeLEDs into full‐color display panels. Here, the fabrication methods and crystallization processes of perovskite materials are first discussed because they are strongly relevant to the patterning process and the quality of the perovskite pixels. Then, the current strategies to realize perovskite patterns that can be likely integrated into display panels, through mask‐free or mask‐assisted methods, are explored. Self‐emitting and down‐conversion PeLED devices with a patterned perovskite matrix as the emissive layer are also reviewed. Finally, an outlook is provided on how to further improve the optical and electrical properties of the perovskite patterns and the performance of PeLEDs as well as to develop eco‐friendly devices to accelerate the potential commercialization progress of this young technique.

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Printable CsPbBr₃ perovskite quantum dot ink for coffee ring-free fluorescent microarrays using inkjet printing

Abstract: Printable perovskite quantum dot (QD) ink is very important for achieving high quality coffee ring-free fluorescent microarrays for different kinds of emerging perovskite optoelectronic applications using inkjet printing.

Cited by 85 publications

References 45 publications

In Situ Inkjet Printing Patterned Lead Halide Perovskite Quantum Dot Color Conversion Films by Using Cheap and Eco‐Friendly Aqueous Inks

In Situ Inkjet Printing Patterned Lead Halide Perovskite Quantum Dot Color Conversion Films by Using Cheap and Eco‐Friendly Aqueous Inks

Hotspot generation for unique identification with nanomaterials

Recent Progress on Patterning Strategies for Perovskite Light‐Emitting Diodes toward a Full‐Color Display Prototype

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Printable CsPbBr3 perovskite quantum dot ink for coffee ring-free fluorescent microarrays using inkjet printing

Abstract: Printable perovskite quantum dot (QD) ink is very important for achieving high quality coffee ring-free fluorescent microarrays for different kinds of emerging perovskite optoelectronic applications using inkjet printing.

Cited by 85 publications

References 45 publications

In Situ Inkjet Printing Patterned Lead Halide Perovskite Quantum Dot Color Conversion Films by Using Cheap and Eco‐Friendly Aqueous Inks

In Situ Inkjet Printing Patterned Lead Halide Perovskite Quantum Dot Color Conversion Films by Using Cheap and Eco‐Friendly Aqueous Inks

Hotspot generation for unique identification with nanomaterials

Recent Progress on Patterning Strategies for Perovskite Light‐Emitting Diodes toward a Full‐Color Display Prototype

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Product

Resources

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Printable CsPbBr₃ perovskite quantum dot ink for coffee ring-free fluorescent microarrays using inkjet printing