Abstract
Tin-based perovskites have attracted more and more attention in recent years due to their non-toxic properties. However, the poor stability of Tin-based perovskites severely limits its further applications. In order to obtain more stable Tin-based perovskites, in this work, Cs ions are introduced as a precursor besides SnF2 during the synthesis of Tin-based perovskites. Further, poly(N-vinylcarbazole) (PVK) is introduced into the above perovskites to improve the separation rate of photogenerated carriers and to suppress both O2 and H2O diffusion into Tin-perovskites. Enhanced-performance Tin-based perovskite photodetectors with hybrid bulk-heterojunctions were obtained, and our experimental data showed that the responsivity and the specific detectivity of the photodetectors ITO/ZnO/FA0.9Cs0.1SnBr3:PVK/MoO3/Ag reached to 409.8 A/W and 1.23 × 1014 Jones, respectively, under 25.3 μW/cm2 405 nm illumination at − 0.2 V. In addition, the devices also show great stability, whose photocurrent decreases only slightly after its deposing in glove box for 14 days. Thus, such a kind of combing A-site cation engineering with surface-passivating engineering on hybrid bulk-heterojunction provides a facile method for high-performance Tin-perovskite photodetectors with high-stability.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: 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.
