Organic materials for Printed Electronics

Polymer-based Materials for Printed Electronics: Enabling High Efficiency Solar Power and Lighting

Polymer Semiconductors

Plextronics’ Plexcore® technology platform is comprised of semiconducting polymers and solution-processable inks that are designed to maximize the efficiency, lifetime and stability of PE devices. Plexcore OS, in particular, is a p-type organic semiconductor based on regioregular poly 3-hexylthiophene, RR-P3HT (Figure 1), a semi-crystalline, semiconducting polymer with exceptional spectroscopic and electronic properties. The material is easily synthesized via a method developed Plextronics’ co-founder, Dr. Richard D. McCullough. Plexcore OS 2100 (Aldrich Prod. No. 698997) is a grade of P3HT specifically designed for OPV and demonstrates the following properties:

Figure 1 Poly 3-hexylthiophene (Aldrich Prod. Nos. 698997, 698989)

  • Electronics grade purity ( 7% cell efficiencies will require tailoring of all of these properties in combination. o the best performance of organic solar cells for commercial applications. Plextronics is actively pursuing development of higher efficiencies with the Plexcore PV platform. NREL-certified efficiencies in excess of 5% have already been achieved with improvements in materials and morphology.

    Table 1 Factors Influencing OPV Effi ciency

    Polymer Conductors

    Regioselective polymerization techniques used for synthesizing P3HT allow fine control of the absolute structure of the polymeric materials which support a variety of functionalities, thus enabling a greatly expanded platform for polymer design. For example, Plextronics has developed an inherently doped sulfonated solution of Poly(thiophene-3-[2-(2-methoxyethoxy) ethoxy]-2, 5-diyl) (see Figure 7). IL) for OLED devices and as a hole transport layer (HTL) for OPV devices. Plextronics provides 2% concentration solutions for application as an HIL - Plexcore OC 1100 (Aldrich Prod. No. 699799) and Plexcore® OC 1200 (Aldrich Prod. No. 699780).

    Figure 7 Poly(thiophene-3-[2-(2-methoxyethoxy)ethoxy]-2, 5-diyl), sulfonated (Aldrich Prod. Nos. 699799, 699780)

    Some of the performance benefits that Plexcore® OC offers as an HIL include:

  • Reduced acidity, preventing anode degradation and ensuring improved device lifetime.
  • Tunable properties such as work function, resistivity, surface energy, and viscosity, enabling researchers to optimize device performance.
  • Compatible with multiple solvent systems and aqueous-based solutions, facilitating a variety of processing techniques.
Springer Applications of Organic and Printed Electronics: A Technology-Enabled Revolution (Integrated Circuits and Systems)
Book (Springer)

Membrane Switches are touch-sensitive input

by HelpfulHitler

Membrane Switches are touch-sensitive input devices for activating and de-activating circuits.
Mistakenly called dome switches, the dome can be formed, but isnt the switch.Printed on flexible, heat-stabilized materials using conductive inks, they offer superior reliability, low-cost performance and increased graphic appeal.
Whatever the application from control panels,scales, all devices, fuel dispensing systems, white goods, retail POP displays, measuring and detection equipment, electronics, and many more.
While other layers make the membrane switch function, it's the graphic overlay that directly interfaces between the user and device

Agfa Demos Integration of Print into Manufacturing  — PCB007
.. (e.g. printing on deco paper for laminate), marking and coding, Agfa also showed a complementary offer of dispersions and coating solutions, pellets, screen and inkjet printing inks, as well as conductive nano-silver and polymer inks for printed ..

Springer Printed Organic and Molecular Electronics
Book (Springer)
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