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ETH Zürich researchers develop microchip-style OLED manufacturing
Researchers at ETH Zürich have developed a new method to manufacture ultra-small OLED pixels using photolithography, a high-precision technique typically reserved for semiconductor microchips.
Previously, the organic materials used in OLEDs were incompatible with the harsh solvents and chemicals required for photolithography, which would degrade the organic molecules. To overcome this, the team created a new class of long-chain luminescent polymers that function as photoresists. These polymers utilize a ‘core-shell’ molecular architecture: a color-emitting organic core is protected by a star-like outer shell that reacts to UV light.
When exposed to UV radiation, the outer arms of these molecules cross-link, making the material insoluble and allowing for the creation of fine-scale geometric structures. This breakthrough, published in the journal Nature, paves the way for much smaller, brighter displays suitable for augmented reality (AR) glasses and high-resolution camera viewfinders.
Entities
Chih-Jen Shih · ETH Zurich · Nature · University of Helsinki · Yinyin Bao
Claims
What the coverage asserts, and how many sources carry each claim.
- [● 2 SOURCES] The research findings were published in the journal Nature. www.bionity.com · www.chemie.de
- [● 2 SOURCES] Researchers developed a new class of long-chain molecules that can be processed into OLED pixels via direct exposure. www.bionity.com · www.chemie.de
- [● 2 SOURCES] Researchers at ETH Zurich created light-emitting polymers that function as photoresists for photolithography. www.bionity.com · www.chemie.de
- [● 2 SOURCES] The developed polymers can be applied directly onto semiconductor chips. www.bionity.com · www.chemie.de
- [● 2 SOURCES] The new polymers can withstand the harsh chemical conditions used in semiconductor manufacturing. www.bionity.com · www.chemie.de