Displays - Page 2

Perovskite-Info is proud to announce an update to our Perovskite for the Display Industry Market Report. This market report, brought to you by the world's leading perovskite and OLED industry experts, is a comprehensive guide to next-generation perovskite-based solutions for the display industry that enable efficient, low cost and high-quality display devices. The report is now updated to February 2024, with all the latest commercial and research activity. This was a major version, with over 15 updates, new companies and new technologies covered.

Reading this report, you'll learn all about:

• Perovskite materials and their properties
• Perovskite applications in the display industry
• Perovskite QDs for color conversion
• Prominent perovskite display related research activities

The report also provides a list of perovskite display companies, datasheets and brochures of pQD film solutions, an introduction to perovskite materials and processes, an introduction to emerging display technologies and more.

Researchers at Lawrence Berkeley National Laboratory (Berkeley Lab), led by Prof. Peidong Yang, have developed a new 3D printing ink based on perovskite materials, that exhibits near unity photoluminescence quantum yield (PLQY). Interestingly, as it is a 3D printable ink, it is possible to create luminescent objects from it, as seen in the image below:

Eiffel Tower luminescent structures, made from 3D-printed supramolecular ink (Berkeley Lab)
 

The researchers brand the new ink as 'supramolecular ink', and say it is produced without any rare metals. It is a combination of several powders containing hafnium (Hf) and zirconium (Zr), and is made at room temperatures. In a process called supramolecular assembly, tiny molecular building block structures are self-assembled within the ink. These supramolecular structures enable the material to achieve stable and high-purity synthesis at low temperatures.

A team of researchers, led by Maksym Kovalenko at ETH Zurich and Empa, working in collaboration with scientists from the U.S. and Ukraine, recently demonstrated how the promising properties of perovskite quantum dots can be improved further. They used chemical methods for surface treatment and quantum mechanical effects that had never before been observed in perovskite quantum dots. 

Perovskite quantum dots can be mixed with liquids to form a dispersion, which makes them easy to process. Moreover, their special optical properties make them shine more brightly than many other quantum dots. They can also be produced more cheaply, which makes them interesting for applications in displays, for instance. On top of all this, the newly developed phospholipid molecules create a protective layer around the perovskite nanocrystal and make it possible to disperse it in non-aqueous solutions. They also ensure that the quantum dot emits photons more continuously. 

Swiss additive manufacturing startup Scrona and Avantama, developer and manufacturer of high-tech materials for electronics, have jointly announced that they have successfully processed high-performance perovskite quantum dot (QD) ink using Scrona's electrohydrodynamic (EHD) inkjet printing. 

This collaboration combines the benefits of the inkjet process with high-patterning resolution to drive a new generation of efficient and cost effective MicroLED displays, while also increasing color purity and brightness, and improving overall pixel production tact time. 

Researchers at Seoul National University and Korea Advanced Institute of Science and Technology (KAIST) have developed highly efficient tandem perovskite light-emitting diodes (PeLEDs). This advancement may expedite the commercialization of perovskite light-emitting materials in next-generation display technologies.

The Ministry of Science and ICT (MSIT) announced that the team, led by Professor Lee Tae-woo from Seoul National University’s College of Engineering, has successfully created a high-efficiency and long-life hybrid tandem light-emitting device. This device combines metal halide perovskites with organic light-emitting diodes.

Researchers at Yonsei University and Korea University have integrated perovskite films with two-dimensional electronics to address current obstacles that hinder the commercialization of perovskite LEDs (PeLEDs). 

The scientists developed centimeter-scale integrated PeLED displays achieving key metrics on par or better than existing standards. This work suggests the potential transition of PeLEDs from lab concept to next-generation commercial displays.

Helio Display Materials has announced it will be moving its perovskite-based display materials (that were jointly invented within Cambridge and Oxford Universities) to pilot-scale production.

The materials generate light of the desired color by converting light rather than filtering it which provides power savings of up to 40% and a step change improvement in color gamut. With perovskites, the wavelength of emitted light can be tuned by chemical composition. This contrasts with quantum dots which rely on quantum confinement in identically sized nanometer scale particles. Color by composition massively simplifies the manufacturing process for perovskites vs. quantum dots and allows the use of standard chemical industry processes and equipment.

Perovskite nanocrystals (PNCs)/polymer nanocomposites can combine the advantages of both materials, but achieving the fabrication of PNCs/polymer nanocomposites by bulk polymerization has proven Very challenging. A team of scientists, led by Professor Bai Yang from Jilin University in China, has adopted a a two-type ligand strategy to fabricate bulk PNCs/polystyrene (PS) nanocomposites, including a new type of synthetic polymerizable ligand.

The CsPbCl₃ PNCs/PS nanocomposites reportedly showed extremely high transparency that can be ascribed to the Rayleigh scattering as the PNCs distribute uniformly without obvious aggregation. Based on this behavior, the team first exploited the potential of PNCs to serve as scatters inside light guided plate (LGP), whose surface illuminance and uniformity can be improved, and this new kind of LGP is compatible with advanced liquid crystal display technology. 

Australia-based Greatcell Solar Materials produces and supplies perovskite materials, and is one of the industry's pioneer companies. We conducted an interviw with Dr. Yanek Hebting, Greatcell's general manager, who updates us on the company's business, material and his views on the perovskite industry.

Hello Dr. Hebting, Thank you for this Q&A. Can you introduce us to Greatcell Solar Materials?

Greatcell Solar Materials Pty Ltd was created in October 2018 as the spin-off of the Materials Division of Greatcell Solar, formerly Dyesol. Greatcell Solar Materials is a manufacturer and supplier of materials (including perovskite precursors, dyes, ligands, titania pastes, electrolytes as well as components) for energy system applications to the photovoltaics research sector and the electronics industry.

All products are manufactured and shipped from our facility in Queanbeyan, NSW Australia.

Can you tell us a bit about the demand for perovskite materials? Does it come mostly for research, or pilot lines?

As COVID restrictions around the world have eased and global activity resumed, the demand for perovskite materials has significantly increased since.
Greatcell Solar Materials provides both bulk quantities for industrial partners as well as small quantities for research purposes. The demand for research purpose will always be a part of the demand, it is exciting to see some pilot lines take fruition and begin the process of commercialization.

Researchers at MIT have developed a bottom-up approach for precise and scalable formation of perovskite nanocrystal arrays with deterministic control over size, number, and position. The new platform enables researchers to 'grow' halide perovskite nanocrystals with precise control over the location and size of each individual crystal, integrating them into nanoscale light-emitting diodes.

Halide perovskite materials have largely been implemented into thin-film or micron-sized device applications. Precisely integrating these materials at the nanoscale could open up even more remarkable applications, like on-chip light sources, photodetectors, and memristors. However, achieving this integration has remained challenging because this delicate material can be damaged by conventional fabrication and patterning techniques.