Centimeter-size single crystal of a lead-free double perovskite for broad-spectrum polarization-sensitive detection. Issue 47 (29th November 2022)

• Record Type: Journal Article
• Authors: Li, Zhou; Chen, Qin; Wang, Ziyang; Fan, Yipeng; Zhu, Tingting; Ji, Chengmin; Kuang, Xiaojun; Luo, Junhua
• Is Part Of: Journal of materials chemistry. Volume 10:Issue 47(2022)
• Page Start: 18063
• Page End: 18068
• Publication Date: 2022-11-29
• Subjects: Materials -- Periodicals; Chemistry, Analytic -- Periodicals; Optical materials -- Research -- Periodicals; Electronics -- Materials -- Research -- Periodicals; 543.0284
• DOI: 10.1039/d2tc03201e
• Languages: English
• ISSNs: 2050-7526

Abstract

Abstract : By designing the crystal synthesis, a "green" large-size single-crystal hybrid double perovskite (IPA)4 AgBiI8 was grown for the first time. It enables broad-spectrum polarization-sensitive responses. Abstract : Two-dimensional (2D) lead-based hybrid perovskites with highly intrinsic anisotropy and entertaining semiconductor properties are well suited for polarization-sensitive photodetection. Nonetheless, their chemical instability and environmental hazards hinder their further application. Recenly, 2D double perovskites have received much attention as excellent green alternatives to lead-based perovskites. However, the application of 2D double perovskite in broad-spectrum polarization-sensitive detection has not been explored. In this work, we first grew centimeter-sized crystals (11 × 3 × 1 mm 3 ) of 2D hybrid double perovskite (IPA)4 AgBiI8 (IPA is iodopropylamine) with narrow bandgap of Eg = 1.87 eV. Remarkably, the single-crystal photodetectors of (IPA)4 AgBiI8 show broad-spectrum polarization-sensitive response, even at 660 nm, with a large dichroism ratio ( I ph c / I ph b ≈ 1.23), a large detectivity up to ∼10 10 Jones, and a relatively rapid response time (∼450 μs). All these outstanding features combine to produce (IPA)4 AgBiI8, an excellent polarized photodetector material. This work introduces a novel 2D hybrid double perovskite material for broad-spectrum polarization-sensitive photodetection.