Compatibility of ZrO2 Nanocrystals in Inorganic-Organic Hybrid Polymer Matrices (ORMOCER)
January 1, 2018
This white paper discusses the combination of best-of-class materials in order to achieve high-quality composites showing a remarkable aging stability. The blue-light stability and the achievable refractive indices are reported.
Utilizing Hansen Solubility Parameters for Formulation Optimization using PixClear® Zirconia Nanocrystals
September 18, 2017
Hansen Solubility Parameters are a quantifiable measure of compatibility that aid in the optimization of formulations for a variety of applications. The HSP values have been determined for Pixelligent’s PixClear® PCPR zirconia nanocrystals. From these tests, PixClear® is shown to have excellent compatibility with a broad range of components that may be used in complex formulations.
Inkjet Printing of Zirconia Nanocomposite Materials
November 9, 2016
The application of Pixelligent’s PixClear® high-refractive index (> 1.7) zirconia nanocomposite films onto glass substrates by way of inkjet printing is discussed in this white paper. Two formulations are highlighted within: one formulation for optically clear films, and the other for OLED lighting internal extraction layers (IEL).
Compatibility of ZrO2 Nanocrystals in Acrylic Monomers
September 14, 2016
This white paper illustrates the optical clarity and compatibility of four PixClear® nanocrystal dispersions (PCPG-2, PCPB-2, PCPN and PCPR) in nine different acrylate monomers with varying chemistries and molecular weights.
Improved Light Extraction for OLED Displays
May 19, 2016
There are many opportunities to increase the brightness and efficiency of OLED displays. In this white paper we describe how Pixelligent's solution processable high refractive index zirconia materials can be used to create extraction structures for display applications
White Paper: Scaling-up Pixelligent Nanocrystal Dispersions
February 17, 2016
We explain how PixClear nanocrystal dispersions were scaled from the lab scale to commercial production volumes while maintaining stringent safety and quality standards.
White Paper: Low Chromatic Aberration Nanocomposites
November 11, 2015
In this paper the Abbe numbers of Pixelligent zirconia nanocrystal containing composites were determined for two acrylic and two silicone based polymer systems. The effect of nanocrystal loading on transparency and Abbe number are examined and compared to similar materials from literature.
White Paper: Resistivity and Dielectric Strength of Nanocomposites
November 11, 2015
The surface resistivity, volume resistivity, and dielectric strength of Pixelligent zirconia nanocrystal/acrylic composites was measured in this study. Native bisphenol A glycerolate dimethacrylate (BPA) was measured as the reference medium, and PixClear PCPR nanocomposites were tested at 50wt% and 90wt% in the same polymer system.
White Paper: Lumen Gain with Zirconia-Silicone Nanocomposites for LED Encapsulation
May 29, 2015
Pixelligent’s zirconia-silicone nanocomposite materials deliver up to 7% lumen output increase to packaged LEDs over a standard methyl silicone alone in a YAG-based phosphor layer. The nanocomposite combines the benefit of high-refractive index without the need for phenyl functional groups in a silicone system and is designed for use in either spray or dispense processes. Lumen efficiency gains over a standard methyl silicone and lumen equivalence compared to a methyl phenyl silicone can be achieved with a conventional LED chip architecture, a dispensable single phosphor-silicone mixture and a hemispherical lens.
Pixelligent Internal Light Extraction Layer for OLED Lighting
May 28, 2015
Pixelligent has successfully developed a complete internal light extraction layer (ILE) for OLED lighting applications based on titania scatterers and Pixelligent’s zirconia nanodispersions. This high-refractive index layer increases light output and can be applied with slot-die coating to provide customers with a single process for an ILE with integrated scatters. The slot-die coating technique is a scalable and low-cost process suitable for large size manufacturing.
White Paper: Transparent High Dielectric Nanocomposite
February 16, 2015
Pixelligent’s transparent ZrO2 nanocrystal/polymer nanocomposite provides a new class of high dielectric constant material that can be applied to many novel applications. Because of our proprietary surface capping technology, the nanocrystals can be incorporated into the polymer up to 80 wt% loading, corresponding to a dielectric constant of 8, without losing optical transparency and processability.
White Paper: Pixelligent LED Encapsulation
September 11, 2014
Pixelligent’s zirconia nanocrystals in commercial silicone LED encapsulants result in high quality zirconia/silicone nanocomposites. The zirconia/silicone nanocomposites have the potential to deliver improved LED performance and reliability. This white paper discusses experimental results demonstrating the ability of silicone compatible nanocrystals to deliver higher refractive indices while maintaining optical clarity and thermal stability of the base silicones.
White Paper: Pixelligent Zirconia Nanocrystals for OLED Applications
September 11, 2014
Although Organic Light Emitting Devices (OLED) have a great promise of providing a novel and highly energy efficient form of general lighting, one of the main barriers to their commercial adoption is the poor extraction efficiency of the light produced in the device. At the heart of this problem is the refractive index mismatch and almost all internal light extraction scheme requires a high refractive index material