By Avantama AG
We have developed highly efficient solution processable inorganic charge transport formulations for optical sensors such as SWIR sensors or fingerprint sensors. Our formulations yield very thin and stable metal oxide layers with either hole transport (HTL) or electron transport (ETL) function. Off-the-shelf ETL and HTL materials, customization on request Our off-the-shelf portfolio comprises almost 30 different standard formulations suitable for both hole and electron transport functions. With a suitable solution for practically every modern printing and coating technique, Avantama can support the production of your electronic device via spin coating, ink jet printing, roll-to-roll coating, and many more. - Various ETL/HTL compositions are available off-the-shelf - ZnO, Al:ZnO - SnO 2; Sb:SnO 2 - NiO - WO 3 - Various solvent systems for different coating/printing processes - Nanoparticle solid loadings: 1 – 10 wt% - Proprietary ligands for: - High ink shelf life (12+ months) - good charge transport - Ink formulations tunable on customer’s specifications (e.g. solid loading, solvent system, etc.) Advantages of Avantama ETL and HTL materials Enabling high-volume mass production of Perovskite PV Compared to other materials in the market, Avantama ava mox materials have the following advantages for the use as ETL and HTL materials: - Solution processable → For e.g. roll-to-roll high-volume Perovskite PV manufacturing - Low-temperature processing (< 80°C) → For temperature-sensitive substrates and fast deposition/drying times - Coatable on various substrates - High ink production reproducibility - High ink shelf life (12+ months) → Key for mass production of Perovskite PV - Nanoparticle and ink production capacity equivalent to 0.2 – 2 GW Perovskite PV/year - Customer-specific ink customization available
Our high-performing perovskite quantum dots can be applied in pixelated photoluminescent form for QD-OLED or QD-uLED displays. Combining OLED and microLED displays with ava pix enables better colors, higher efficiency and lower display manufacturing costs. ava pix are deposited in pixel-form on blue OLED or microLED pixels to convert the blue into green and red sub-pixels. One of the most important requirements is that the very thin pixelated QD layers absorb all blue light to avoid blue leakage in the green and red subpixels. ava pix exhibit by far the highest blue absorbance if compared to InP or CdSe quantum dots. The main reason is that perovskite quantum dots do not have any shell, thus only exhibits full light absorbing properties. The industry leading FWHM (ca. 20nm), high quantum efficiency and the ultra-high optical density of Avantama’s ava pix enable the following benefits: - Thinner QD color conversion layers - Widest color gamut (95% Rec.2020) - Highest peak brightness / lowest power consumption - Widest viewing angle Our ava pix materials are available for ink jet printing and photolithography processes. These materials are under development with selected partners. The perovskite quantum dot inks and formulations are produced at mass production scale. Samsung has already commercialized QD-OLED displays using Indium phosphide QDs. However, as theses QDs are quite limited in brightness and optical density, such QD-OLED displays require an additional green OLED emitter stack to create sufficient green light intensity. This adds cost to the OLED backlight manufacturing costs. Compared to currently used InP QDs in Samsung QD-OLED displays, Avantama pQDs will: - Increase Rec.2020 to 95% - Decrease OLED stack costs at least 20$/m 2 by making the green OLED emitter redundant (Reference: DSCC 2023) For the manufacturing of QD color conversion pixels, Avantama offers ava pix for ink-jet printing and photolithography.
CATEGORY
This electron transportation material comprises a mixture of aluminum-doped zinc oxide particles (Al:ZnO) of just 12 nm dimensions dispersed in a 2.5 cp viscosity propanol solvent. It is ideal for printed electronics using most established printing methodologies, providing low thermodynamic requirements to encourage electron motion irrespective of its application superstructure. This coating formulation enables the low-cost fabrication of ultra-efficient organic light-emitting diodes (OLEDs) and organic photovoltaic cells (OPVs). Alternative coating formulations under the N-20X product terminology include: - N-20X-Flex; - N-20X-Slot; - N-20X-Jet; - N-20X-Screen. Each of these formulations is synthesized to distinct chemical and mechanical parameters to maximize their efficacy in their respective production environments.
CATEGORY
Avantama has developed a series of electron transport materials based on aluminum-doped ZnO nanoparticles in a 2-propanol solvent. The concentration of particles and the particle size distribution can be tailored as required, and the solution is compatible with both Perovskite absorbers and silver anodes. This ensures high device applicability regardless of the architecture or deposition method, with available processing techniques including spin coating and slot die printing.
CATEGORY
Avantama specialises in the development and production of semiconducting nanomaterials that can match the impressive rate of modern research and development into new printed electronics arrays. We have developed a range of inorganic semiconducting nanomaterials suitable for solution processing of OLED and OPV devices. These include tungsten, molybdenum, zinc, and aluminium-doped zinc oxides (WO x, MoO x, ZnO, and Al:ZnO).
CATEGORY
