Tunable Multiband Halide Perovskite Tandem Photodetectors with Switchable Response.

ABSTRACT: Photodetectors with multiple spectral response bands have shown promise to improve imaging and communications through the switchable detection of different photon energies. However, demonstrations to date have been limited to only two bands and lack capability for fast switching in situ. Here, we exploit the band gap tunability and capability of all-perovskite tandem solar cells to demonstrate a new device concept realizing four spectral bands of response from a single multijunction device, with fast, optically controlled switching between the bands. The response to monochromatic light is highly selective and narrowband without the need for additional filters and switches to broader response bands on applying bias light. Sensitive photodetection above 6 × 10¹¹ Jones is demonstra

SUBMITTER: Moseley ODI 

PROVIDER: S-EPMC9782784 | biostudies-literature | 2022 Dec

REPOSITORIES: biostudies-literature