Related Experiment Video
Updated: Jul 16, 2025
Light Spot-Based Assay for Analysis of Drosophila Larval Phototaxis
Published on: September 27, 2019
A molecular pyroelectric enabling broadband photo-pyroelectric effect towards self-driven wide spectral
Xi Zeng1,2, Yi Liu1,2, Wen Weng1,2
1State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, China.
Abstract:
Broadband spectral photoresponse has shown bright prospects for various optoelectronic devices, while fulfilling high photoactivity beyond the material bandgap is a great challenge. Here, we present a molecular pyroelectric, N-isopropylbenzylaminium trifluoroacetate (N-IBATFA), of which the broadband photo-pyroelectric effects allow for self-driven wide spectral photodetection. As a simple organic binary salt, N-IBATFA possesses a large polarization (~9.5 μC cm-2), high pyroelectric coefficient (~6.9 μC cm-2 K-1) and figures-of-merits (FV = 187.9 × 10-2 cm2 μC-1; FD = 881.5 × 10-5 Pa-0.5) comparable to the state-of-art pyroelectric materials. Particularly, such intriguing attributes endow broadband photo-pyroelectric effect, namely, transient currents covering ultraviolet (UV, 266 nm) to near-infrared (NIR, 1950 nm) spectral regime, which breaks the restriction of its optical absorption and thus allows wide UV-NIR spectral photodetection. Our finding highlights the potential of molecular system as high-performance candidates toward self-powered wide spectral photodetection.
