| Jan 15, 2026 |
Researchers developed high precision chips and a new measuring adapter enabling simultaneous contact with eight electrode pairs, advancing organic material analysis and future electronics.
(Nanowerk News) Fraunhofer IPMS has made a significant breakthrough in materials research. The newly developed chips, which use interdigital electrodes, enable sensitive and innovative materials to be analyzed much more efficiently. These materials include those used in organic light-emitting diodes (OLEDs), organic solar cells, organic field-effect transistors (OFETs), and metal oxide-based gas sensors. This greatly simplifies the testing process, shortens development times, and represents a significant advancement in next-generation electronic technology development.
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To tailor this performance to different applications, Fraunhofer IPMS has collaborated closely with partners and clients over the past few years. Project manager Henry Niemann explains, “We have continuously refined the chips, for example, by introducing new electrode geometries and materials and making adjustments to the gate oxide material and thickness.”
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| New measurement adapter for simultaneous contacting of up to eight interdigital electrode pairs. (Image: Fraunhofer IPMS)
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Until now, the simple and parallel contacting of multiple electrodes has been a particular challenge. However, with the new measurement adapter, Fraunhofer IPMS has succeeded in closing this gap. The adapter enables the parallel contact of multiple interdigital electrode pairs, significantly increasing the efficiency and quality of the testing process.
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Group leader Alexander Graf adds: “Our customized chips allow materials researchers to accurately measure and optimize important parameters, such as conductivity, field effect, contact resistance, and charge carrier mobility.” This lays the foundation for developing, optimizing, and reproducing materials and processes for customized solutions that meet industry’s specific requirements.
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| Chip AX1580, 15×15 mm², with 8 gold interdigital electrode pairs with a channel width of 10 mm and channel lengths of 2.5, 5, 10, and 20 µm. The chip itself can be used as a gate electrode; the gate oxide between the gate and the interdigital electrodes is typically SiO2 with a thickness of 230 nm. (Image: Fraunhofer IPMS)
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A selection of interdigital electrode chips and the new measurement adapter will be presented at Analytica 2026 at the Fraunhofer booth A3 – #312. There, interested visitors will gain insights into specific application possibilities. Individual appointments can be arranged in advance via the website of the Fraunhofer Institute for Photonic Microsystems IPMS.
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