New printing technique could democratize printed electronics

Nanowerk  April 8, 2023 An international team of researchers (Spain, Saudi Arabia, USA – University of Nevada) developed inexpensive benchtop plotters in combination with refillable writing pens and markers as a powerful route to print nanomaterial-based inks on paper substrates using inks of many different solution-processable nanomaterials. It is a robust, precise plotter and allowed printing pattern features with pitch separation as narrow as 80 μm. They illustrated printing van der Waals materials, organic semiconductors, hybrid perovskites and colloidal nanoparticles with a broad range of properties. The system was used to create several example applications such as an all-printed, paper-supported photodetector. […]

New conductive polymer ink opens for next-generation printed electronics

Science Daily  April 21, 2021 Today, the most used conducting polymer is the p-type conductor PEDOT:PSS. However, many electronic devices require a combination of p-types and n-types to function. There is no n-type equivalent to PEDOT:PSS. An international team of researchers (Sweden, South Korea) has developed a conductive n-type polymer ink, BBL:PEI which is stable in air and at high temperatures. It comes in the form of eco-friendly ink with ethanol as the solvent. The ink can be deposited by simply spraying the solution onto a surface, making organic electronic devices easier and cheaper to manufacture. Printable n-type mixed ion-electron […]

Molecular bridges power up printed electronics

Nanowerk  February 25, 2021 Semiconducting transition metal dichalcogenides (TMDs) can be used to make conductive inks to manufacture printed electronic and optoelectronic devices. However, defects in their structure may hinder their performance. To boost the electrical performance of TMD based devices an international team of researchers (France, Ireland, UK) has developed ‘molecular bridges’- small molecules that interconnect the TMD flakes. The molecular bridges double up as walls, healing the chemical defects at the edges of the flakes and eliminating electrical vacancies that would otherwise promote energy loss and they provide researchers with a new tool to tailor the conductivity of […]