Template-assisted fabrication of PVK microwire arrays for high-performance flexible photodetectors

Abstract

The development of flexible photodetectors is crucial for advancing wearable electronics and optoelectronic systems, but it faces significant challenges, such as maintaining high performance under mechanical strain and achieving cost-effective fabrication. Here, we fabricated a photodetector using poly(N-vinylcarbazole) (PVK) microwire arrays through a template-assisted method. The resulting devices exhibit high responsivity and exceptional mechanical flexibility, with the ability to maintain their photoelectric properties even when bent up to 150°. The photodetector exhibits high responsivity of 0.9 A W−1 and detectivity of 1.6 × 1010 Jones. This study demonstrates the potential of PVK microwire arrays for imaging applications, highlighting their suitability for integration into flexible and wearable devices.