Ultra-Flexible Pixelated Perovskite Photodetectors Enabled by Honeycomb Polymer Grids for High-Resolution Imaging.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 40091486.
- Also identified by DOI 10.1002/adma.202415068 and PMC identifier 12038531.
- Licence recorded as CC BY.
- The licence permits redistribution, so the abstract is shown in full and the full text is available from the publisher.
Abstract
A nature-inspired fabrication method based on a photolithography-free flexible polymer grid is reported for high-resolution pixelation of perovskite photodiode arrays with exceptional mechanical ductility and a morphology resembling that of natural compound eyes. The resulting pixelated perovskite photosensitive layer has a ≈1 µm pixel size with 2000 Pixels per inch (PPI) resolution when fully assembled as a photodetector array, delivering a detectivity of >10<sup>13</sup> Jones while providing cross-talk free imaging. Using a polymer grid effectively releases stress on the perovskite platform, greatly increasing the mechanical agility of the otherwise brittle perovskite film. This novel fabrication methodology and device design offer new possibilities for applications in robotics, biomedical imaging, and virtual and augmented reality.