Abstract
A simple and facile solution phase synthesis of large-scale, micro-to-nanometer sized bismuth triiodide (BiI3) single crystalline hexagonal plates is reported. It is demonstrated that under optimized conditions the reactions result in dominant exposed (001) facets. Because of the large size, high surface-to-volume ratio, and thickness, BiI3 nanoplatelets are attractive as visible light photodetectors. At 1 V bias, the photoresponsivity is 0.87 A W–1; the specific detectivity is 4.8 × 1012 jones with a response rise time of 1 s and a fall time of 0.97 s. The Kelvin probe force microscope images revealed that the surface potential difference across the junction was 42.5 mV, which is attributed to the work function difference between the sample and substrate. The results of this study indicate that single hexagonal platelets of BiI3 are very promising for visible light photodetector applications.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.