Display Materials

Our offerings support printable manufacturing technologies and eco-friendly solutions, enhancing efficiency and scalability in display production. With a well-established logistics network, ensuring reliable and timely delivery of high-quality products, minimizing disruptions in your production process.

We provide a diverse range of materials, including prefabricated devices (like organic field-effect transistors, OFETs) tailored to meet various display needs. Our customized solutions are designed to enhance performance and drive innovation in your research and applications.

Key Components in display Device Architecture

The display structure includes essential materials such as substrates, hole transport layers, electron transport layers, emissive materials, insulation and encapsulation layers, anodes, and electrodes. Our printable emissive and transport materials streamline production processes, reducing waste while maintaining high performance.

Emissive Layer: Function & Composition

The emissive layer is vital for light production, situated between the hole and electron transport layers. It consists of host materials and dopants that improve light emission efficiency and stability.

OLED Host Materials

Host materials enhance the performance of emissive materials by facilitating charge transport. The types include:

• Thermally Activated Delayed Fluorescence (TADF) Host Materials

  These serve as alternatives to traditional emitters, maximizing internal quantum efficiency. An example is 4,4′-Bis(N-carbazolyl)-1,1′-biphenyl, known for its excellent performance in OLED applications.

• Fluorescent Host Materials

  These materials transfer energy to dopants, stabilizing charge carriers. An example is 4,4′,4′′-tris(carbazol-9-yl)-triphenylamine, which is used as a nucleation reagent to enhance the quality of perovskite films by eliminating pinholes in the film.

• Phosphorescent Host Materials

  These provide high efficiency and vibrant colors. An example is TSPO1, employed in the OLED blocking layer to improve device performance.

   

OLED Dopants and Emitters

Dopants modify the properties of materials to enhance device performance. A notable example is Tris-(8-hydroxyquinoline)aluminum (Alq3), which is used in phosphorescent OLEDs and chemical sensors.

Light-Emitting Polymers for Display Technology

Light-emitting polymers, such as poly[(9,9-dioctylfluorenyl-2,7-diyl)-co-(2,5-p-xylene)], are essential for creating color filters that improve display performance.

Liquid Crystalline Compounds in OLED and LCD Displays

Liquid crystalline materials, including fluorescent photo-conducting liquid crystalline compounds like TpOx-Ph-o-Cl, enhance alignment and response times in OLEDs and LCDs, contributing to improved display performance.

Quantum Dots for Display Applications

Quantum dots emit specific colors based on size, enhancing color quality in displays. Examples include CdSe/ZnS, graphene quantum dots, and InP/ZnS quantum dots, which are utilized in various applications, from alternating current-quantum dot light-emitting diode (AC-QLED) devices to perovskite quantum dot solar cells.

Hole Transport Layer (HTL) Materials in OLEDs

The hole transport layer is crucial for moving holes to the emissive layer. N,N′-Bis(3-methylphenyl)-N,N′-diphenylbenzidine (TPBi) is a widely used HTL, known for its excellent charge transport properties.

Electron Transport Layer (ETL) in OLED Technology

The electron transport layer ensures efficient electron movement to the emissive layer. 4,7-Diphenyl-1,10-phenanthroline (BPhen) is a preferred choice for an ETL due to its high electron mobility.

Insulation and Encapsulation Materials

Insulation and encapsulation materials, including dielectric polymers and perovskite materials, enhance light extraction efficiency and protect display components from environmental factors. Poly(4-vinylphenol) (PVP) is an example of a dielectric polymer that forms a low-cost, non-toxic film to enhance adhesion and insulating layer. Polyimides are also used to encapsulate delicate electronic components due to their excellent thermal and chemical resistance.

Flexible Electrodes

Metal-based conductive inks and carbon nanomaterials enable the fabrication of flexible, lightweight circuits for next-generation displays. In this context, nanomaterials and conductive polymers have been at the forefront of wearable, flexible, lightweight devices. Examples within our products are silver-based nanoparticle inks, graphene dispersions, and conductive polymers such as polypyrrole.

Electronic-Grade Solvents

Electronic-grade solvents are essential for semiconductor and display fabrication. We also offer sustainable green solvents to promote eco-friendly research practices.

Substrates for OLED, LCD, and Photovoltaic Applications

FTO-Coated Substrates

Ready-to-use fluorine-doped tin oxide (FTO)-coated glass slides, providing transparent conductivity and streamlining your research in solar cells, LCDs, and OLEDs to focus on what matters. Sigma-Aldrich is at the forefront of display technology research, offering an extensive range of OLED materials that can enhance your projects.