| 초록 |
Hierarchical micro-/nanoarchitectures based on multiscale hybridization of nanomaterials is one of approaches to improve the functionality and performance of flexible photodetectors. We demonstrate hierarchical perovskite nanoribbon (NR) arrays with internal nanorods. The effective photon management of hierarchical perovskite NRs provides high photoresponsivity with broad detection range. The ferroelectricity and highly anisotropic alignment of perovskite NR arrays allow self-powered and polarization-sensitive detection. In addition, we develop flexible photodetectors with omnidirectional detection capability based on hierarchical ZnO nanowires on honeycomb Si membranes. The omnidirectional property enables clear imaging and wide-range detection of objects even though the photodetectors are located on the curved surface. The hierarchical photodetectors can be applied to high-performance flexible optoelectronic systems such as augmented reality, robotics, and wearable electronics. |
