Ultra‐Flexible Pixelated Perovskite Photodetectors Enabled by Honeycomb Polymer Grids for High‐Resolution Imaging
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.
Authors
- Tobin Jay Marks (ORCID: https://orcid.org/0000-0001-8771-0141)
- Ding Zheng (ORCID: https://orcid.org/0000-0002-6420-733X)
- Fei Qin (ORCID: https://orcid.org/0000-0001-7105-2631)
- Jaehyun Kim (ORCID: https://orcid.org/0000-0002-3937-7599)
- Juan‐Pablo Correa‐Baena (ORCID: https://orcid.org/0000-0002-3860-1149)
- Dan Zhao (ORCID: https://orcid.org/0000-0001-5266-6726)
- Antonio F. Facchetti (ORCID: https://orcid.org/0000-0002-8175-7958)
- Joon‐Seok Kim (ORCID: https://orcid.org/0000-0003-2395-7588)
- Lincoln J. Lauhon (ORCID: https://orcid.org/0000-0001-6046-3304)
- Zhi Wang (ORCID: https://orcid.org/0000-0003-1389-0068)
- Zhaoqian Xie (ORCID: https://orcid.org/0000-0003-1320-817X)
- Jianhua Chen (ORCID: https://orcid.org/0000-0002-4767-6310)
- Yao Yao (ORCID: https://orcid.org/0000-0003-3068-766X)
- Dayong Zhang (ORCID: https://orcid.org/0000-0002-2417-1459)
- Wei Huang (ORCID: https://orcid.org/0000-0002-0973-8015)
- D. Bai
- M. G. Kanatzidis
- Sharma Sakshi
Institutions
- Northwestern University (US)
- Georgia Institute of Technology (US)
- Dalian University of Technology (CN)
Publication Details
- Journal
- Advanced Materials
- Published
- 2025-03-17
- DOI
- https://doi.org/10.1002/adma.202415068
- Citations
- 15
- Primary Topic
- Perovskite Materials and Applications
- Type
- article
- Field-Weighted Citation Impact
- 10.96
Funders
- National Science Foundation
- U.S. Department of Energy
- National Institute of Standards and Technology
- Air Force Office of Scientific Research