Displays

Zhenyao Technology, a China-based global provider of e-paper application solutions, recently launched a 31.5-inch full-color e-paper display advertising screen equipped with perovskite photovoltaic cells by Yanhe Solar. 

The product reportedly achieves completely passive operation for the first time in commercial-grade e-paper display devices, requiring no external power supply or replacement of the built-in battery, and can operate continuously using only ambient light. 

A Kookmin University team has been selected for a government-backed nanomaterials technology development program focused on next-generation display materials. The project, supported by South Korea’s Ministry of Science and ICT and the National Research Foundation, brings together a multidisciplinary team to advance metal-halide color conversion materials.

The initiative centers on developing ultrathin perovskite-based color conversion layers for AR/VR and metaverse displays. The team will leverage AI-driven inverse design, combined with a closed-loop high-throughput screening platform, to accelerate materials discovery and optimization.

Perovskite-Info is happy 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 May 2026, with all the latest commercial and research activities.

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 from Shaanxi University of Science & Technology, Henan Academy of Sciences and North China Electric Power University have developed a dual-active-site ligand strategy to address one of the most persistent challenges in mixed-halide perovskite nanocrystal LEDs: halide ion migration and the resulting spectral instability.

Mixed Br/I CsPbI₃₋ₓBrₓ nanocrystals are widely considered the most viable route to achieving pure-red emission in the 620-650 nm range required by the Rec. 2020 display standard (CIE coordinates ~0.708, 0.292). However, under an applied electric field, mobile halide ions (Br⁻ and I⁻) readily migrate through vacancy-mediated hopping pathways. This leads to phase segregation into bromide-rich and iodide-rich domains, causing irreversible spectral shifts, efficiency loss, and device degradation. While external quantum efficiencies (EQEs) of pure-red perovskite LEDs have exceeded 20% in recent years, operational spectral stability remains a key bottleneck.

Researchers from Zhejiang University and Wenzhou University have developed a new strategy to reconcile high luminance and high photoluminescence quantum yield (PLQY) in perovskite nanocrystal (PNC)‑based glass composites - a key challenge hindering commercial application of next‑generation display technologies. 

By introducing fluoride ions through NaF doping, the team successfully modified the glass network to optimize crystallization behavior of all‑inorganic CsPbX₃ (X = Cl, Br, I) PNCs, achieving both full‑spectrum emission and superior optical performance. The fluoride ions depolymerize the originally compact three‑dimensional glass network, lowering the glass transition temperature and creating a favorable micro‑environment for PNC nucleation and growth. This structural modification enables precise control of crystallization and minimizes self‑absorption, resulting in high‑quality nanocrystals uniformly embedded within the transparent matrix.

Researchers at CEA-Leti (Université Grenoble Alpes) have developed green and red-emitting thin-film perovskite color conversion layers (CCLs) using pulsed laser deposition (PLD), targeting GaN-based microLED displays for AR/MR applications.

GaN-based microLEDs offer a superior image quality with high dynamic range and saturated colors for AR/MR glasses, smartwatches, and more. However, achieving full-color pixels remains difficult since conventional InGaN/GaN multi-quantum wells (MQWs) emit a single color based on indium content - blue (~10% In), green (~25% In with lower efficiency), or red requiring separate InGaP materials. Mass-transfer works for larger displays but fails for microdisplays needing sub-1μm pixel pitches, where growing all three colors adjacently is still years from production.

Researchers from Seoul National University, Daegu Gyeongbuk Institute of Science and Technology (DGIST) and Korea Basic Science Institute (KBSI) have developed a new method to mass produce ultra-high color purity perovskite nanocrystals (PeNCs), without the need for high temperature, vacuum, or specialized gas facilities. 

In this new study, Seoul National University's Professor Tae-Woo Lee's research team proposed a new synthesis method that overcomes the limitations of existing PeNC production techniques and identified a previously unknown synthesis mechanism. Conventionally, high quality PeNCs have been synthesized using the 'Hot-injection' method, which involves injecting materials into a hot solution above 150 °C. However, this approach presented several drawbacks, including safety risks such as fire or explosion due to high temperatures and rapid temperature drops, as well as the necessity for specialized facilities to block oxygen and moisture. As an alternative, room temperature (20-25 °C) synthesis methods such as 'ligand-assisted reprecipitation' have been suggested, but they faced limitations where the rapid precipitation rate led to inconsistent quality and a sharp decline in productivity during mass production.

Henan University researchers have developed lanthanide-based, lead-free double perovskite nanocrystals that combine ultra‑narrow green emission with record‑high efficiency and excellent stability, targeting next‑generation high‑definition displays and scintillators. 

The key challenge they address is that while lead halide perovskite nanocrystals offer excellent PLQY and narrow emission, their toxicity and poor environmental stability are serious drawbacks, and most lead‑free double perovskites either have broad self‑trapped‑exciton emission with low PLQY or, in the lanthanide‑based case, very weak absorption which limits practical brightness.

Perovskite-Info is happy 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 January 2026, with all the latest commercial and research activities.

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.

A team of researchers, which was led by Seoul National University and included teams from SN Display, Imperial College London, University of Cambridge, Hanyang University, KAIST, University of Tennessee, Universidad de Valencia, and PEROLED, has demonstrated a hierarchical-shell perovskite platform that delivers near-unity efficiency together with commercial-grade stability and full display-scale manufacturability. The team stated that this work could pave the way for next-generation vivid-color display technologies. 

A HS enables lattice-interface interlocking, transforming colloidal perovskite nanocrystals into commercially viable solid-state emitters. Image from: Science

The researchers developed a hierarchical-shell architecture that chemically interlocks perovskite nanocrystals with inter-bonded PbSO₄, SiO₂, and polymer layers, suppressing lattice softening, ion migration, and interfacial degradation that previously limited stability. This design enabled solid-state perovskite nanocrystal films to reach a photoluminescence quantum yield of 100% and an external quantum yield of 91.4%, the highest reported among solid-state emitters such as phosphors, organic emitters, quantum dots, and other halide perovskites. Because the emitters retain intrinsically narrow linewidths of about 20 nm, they can satisfy and even exceed the Rec. 2020 color standard, allowing more vivid, lifelike colors than typical OLED and quantum-dot displays.