Weak X-Ray to Visible Lights Detection Enabled by a 2D Multilayered Lead Iodide Perovskite with Iodine-Substituted Spacer.

ABSTRACT: Broadband photodetectors (PDs) with low detection limits hold significant importance to next-generation optoelectronic devices. However, simultaneously detecting broadband (i.e., X-ray to visible regimes) and weak lights in a single semiconducting material remains highly challenging. Here, by alloying iodine-substituted short-chain cations into the 3D FAPbI₃ (FA = formamidine), a new 2D bilayered lead iodide hybrid perovskite, (2IPA)₂ FAPb₂ I₇ (1, 2IPA = 2-iodopropylammonium), that enables addressing this challenge is reported. Such a 2D multilayered structure and lead iodide composition jointly endow 1 with a minimized dark current (6.04 pA), excellent electrical property, and narrow bandgap (2.03 eV), which further gives it great potential for

SUBMITTER: You S 

PROVIDER: S-EPMC10375184 | biostudies-literature | 2023 Jul

REPOSITORIES: biostudies-literature