A bioinspired Au-Cu_1.97S/Cu₂S film with efficient low-angle-dependent and thermal-assisted photodetection properties.

ABSTRACT: Inspired by the geological processes, this study develops an innovative low-concentration-ratio H₂ reduction method to reduce the stoichiometric Au-CuS nanoparticles to produce completely reduced stoichiometric Cu₂S with "invisible" Au achieved for solid solution Au enhancement. A stable Au-Cu_1.97S/Cu₂S micro/nano-composite is then formed by spontaneous oxidation. From this composite, in combination with biomimetic technology, an omnidirectional photoabsorption and thermoregulated film (Au-Cu_1.97S/Cu₂S-C-T_FW) is designed and fabricated as a photothermal-assisted and temperature-autoregulated photodetector for broadband and low-angle-dependent photodetection that presents good performance with high responsivity (26.37 mA/W),

SUBMITTER: Tian J 

PROVIDER: S-EPMC7920830 | biostudies-literature | 2021 Mar

REPOSITORIES: biostudies-literature