Integration of filter membrane and Ca2 Nb 3O10 nanosheets for high performance flexible UV photodetectors

We report that the integration of filter membrane and Ca 2 Nb 3 O 10 nanosheets (FM@CNO) UV photodetector (UV PD) shows high performance and excellent flexibility. The Ca 2 Nb 3 O 10 nanosheets were prepared by a facile solid-state reaction and liquid exfoliation process. The Ca 2 Nb 3 O 10 nanosheets can be integrated into the pores of a filter membrane via a simple vacuum filtration method. The FM@CNO UV PD shows high performance under 300 nm light illumination at 5 V bias, including high responsivity (0.08 AW ???1 ), high detectivity (1.1 ?? 10 12 Jones), high UV/visible rejection ratio (3.86 ?? 10 3 ) and fast speed (0.12/1.24 ms). Furthermore, the FM@CNO device exhibits excellent flexibility after many bending cycles. In addition, the FM@CNO array device was used as a pixel array detector for UV imaging. This work provides a novel approach to achieve high performance flexible PDs based on filter membrane and two dimensional materials. ?? 2022 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.

Automated summary

The integration of filter membrane and Ca2Nb3O10 nanosheets (FM@CNO) UV photodetector shows high performance and flexibility. The Ca2Nb3O10 nanosheets were prepared through a simple reaction and exfoliation process, and integrated into the filter membrane via vacuum filtration. The FM@CNO UV PD exhibits high responsivity, detectivity, UV/visible rejection ratio, and fast speed under 300 nm light illumination at 5 V bias. Additionally, the device remains flexible after bending cycles and can be used for UV imaging.