Ultrafast near-infrared pyroelectric detector based on inhomogeneous plasmonic metasurface.

ABSTRACT: Pyroelectric (PE) detection technologies have attracted extensive attention due to the cooling-free, bias-free, and broadband properties. However, the PE signals are generated by the continuous energy conversion processes from light, heat, to electricity, normally leading to very slow response speeds. Herein, we design and fabricate a PE detector which shows extremely fast response in near-infrared (NIR) band by combining with the inhomogeneous plasmonic metasurface. The plasmonic effect dramatically accelerates the light-heat conversion process, unprecedentedly improving the NIR response speed by 2-4 orders of magnitude to 22 μs, faster than any reported infrared (IR) PE detector. We also innovatively introduce the concept of time resolution into the field of PE detection, which represent

SUBMITTER: Lu Y 

PROVIDER: S-EPMC11377428 | biostudies-literature | 2024 Sep

REPOSITORIES: biostudies-literature