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Technology

Organic electronics are providing a range of new opportunities for various applications. This new technology bears possesses the potential to improve existing products in numerous aspects and over the full spectrum of product characteristics. Among them are power efficiency, size and weight, design, and – eventually – product cost, to name only a few. Additionally, the novel devices will allow for completely new product features, like flexible displays or transparent light sources, which can, e.g. be integrated in windowpanes.


Purification

High purity materials are the key for any application in today’s production and R&D processes. In particular for organic opto-electronic devices the purity and reproducibility of materials has been shown to have major impact on device performance. Organic light emitting diodes (OLEDs) or organic photovoltaic cells (OPV) will not succeed without proper purification techniques to result in materials of “opto-electronic grade”. Many other applications in life science, fine chemistry, food and pharmacy do also rely on high purity compounds.

The predominant process we apply for purification is well accepted and commonly known as sublimation under vacuum or gas flow conditions. In addition we operate systems for zone refinement, vacuum drying and further customized systems which can be adapted to customer requirements.

Schematic of a sublimation setup
Schematic view of a sublimation setup

Our proprietary process via sublimation uses several individual purification steps, which have to be controlled precisely. In combination they guarantee for high quality and efficiency.

Our purification systems are designed in-house and operated by CreaPhys to have maximum process control and flexibility. All systems can be operated fully automated to guarantee reproducible high quality and generate individual process protocols for quality management. System capacities range from few hundred milligram to several kilogram per batch. Today CreaPhys has a capacity of several tens of kilograms per month. The capacities may be extended within short period on customer request.

Available Purification methods:

  • Vacuum sublimation
  • Sublimation under gas flow
  • Zone refinement
  • Vacuum drying

Deposition

The process of thin film deposition by physical vapour deposition, mainly thermal evaporation, is already known for many decades. Nowadays the production chain of many products is inconceivable without vacuum evaporation. Even though alternative methods are available, new innovative applications as organic light emitting diodes mostly rely on vacuum deposition methods. The preparation of (in‑)organic thin films benefit from several advantages of vacuum processing, e.g. creation of complex layer structures and independence of environmental influences.

CreaPhys focuses on technologies for vacuum based deposition processes, mainly physical vapour deposition (PVD), for the surface treatment or modification of materials. We provide a number of different products together with intense technological background. Our products include deposition sources for thin film deposition, components for vacuum systems, complete high vacuum (HV) and ultra-high vacuum (UHV) deposition systems and a variety of accessories.

A Stack of coated glass substrates