Nanowerk January 5, 2023 An international team of researchers (Spain, Saudi Arabia, China) integrated semiconducting devices on cellulose paper substrate through a simple abrasion technique that yielded high-performance photodetectors. A solvent-free WS2 film deposited on paper favored an effective electron-hole separation and hampered recombination. The prototype photodetectors exhibited a sensitive photoresponse over a wide spectral range spanning from ultraviolet (365 nm) to near-infrared (940 nm). They found that ambient oxygen molecules decreased the photoresponse and stability of the photodetector. By controlling environmental exposure, they were able to increase the performance of the detector. They built a spectrometer using a paper-based […]
Tag Archives: Disposable electronics
Berkeley engineers develop origami electronics from cheap, foldable paper
UC Berkeley July 6, 2018 An international team of researchers (USA – UC Berkeley, Redstone Arsenal, China) has developed a direct‐write laser‐patterning technology to engrave random shapes of metal‐carbide–graphene composites (MCG) on different types of paper (A4, wiper, filter paper, etc.). These commercial papers are soaked with solutions containing metal ions in gelatin media, which is the major component of the “jelly”. The MCG–paper substrates are applied in a 3D foldable energy generator, electrochemical sensors, and supercapacitors. They see many potential applications for the new, disposable paper electronics, circuitry to detect heavy metal contamination could be “written” on paper to […]