3D Lead‐Free Double Perovskite via Anchoring A‐Site Cation for Ultralow Dose and Stable X‐Ray Detection DOI

Qingshun Fan,

Haojie Xu,

Zeng‐Kui Zhu

et al.

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: April 7, 2025

Abstract 3D lead‐free hybrid double perovskites exhibit remarkable potential for direct X‐ray detection owing to their strong photon attenuation capabilities, efficient charge mobility, and low‐cost fabrication. However, the development of new based on large organic cations remains challenging due Goldschmidt tolerance factor constraint, which impedes further exploration in radiation detection. Herein, a perovskite (Mor) 2 RbSbI 6 ( 1 , Mor = morpholinium) is synthesized, featuring dense framework anchored by A‐site cations. The high‐quality single crystals present high mobility‐lifetime product (1.52 × 10 −3 cm V −1 ) low dark current drift, enabling it achieve simultaneously sensitivity (1.09 4 µC Gy air −2 an ultralow limit (3.1 nGy s under identical operating voltage. Meanwhile, cation anchoring strategy prevents ion migration‐induced structural collapse during detection, thereby improving its hardness stability. These findings provide crystal insights design types materials “green” high‐performance detectors.

Language: Английский

Halogen Engineering Enables Tunable Dielectric Response and Dimensional Regulation in Organic–Inorganic Hybrid Halides DOI

Lei Pan,

Gele Teri,

Cha-Hui Du

et al.

Crystal Growth & Design, Journal Year: 2025, Volume and Issue: 25(5), P. 1597 - 1604

Published: Feb. 24, 2025

Organic–inorganic metal halides (OIMHs) have attracted great interest in the design of various functional materials due to their advantages easy processability, rich structural diversity, and assembly flexibility. However, rational control stacking patterns OIMHs for regulation has been a long-standing challenge. Particularly, little is known about intrinsic relationship between dimensions dielectric response at molecular scale. Here, we investigated modulation effect cationic halogen engineering (N,N-dimethylethanolamine)PbBr3 on stacking, as well its impact thermal, electrical, optical physical properties. Halogen brings varied from one-dimensional (1D) hexagonal perovskite structure two-dimensional (2D) layered an interlocking 1D chain structure. These attributes demonstrated be closely related interactions crystal lattice, leading variation sequential increase phase transition temperature differences response, with similar bandgaps that are mainly determined by inorganic frameworks. This study offers new insights into performance optimization organic–inorganic hybrids.

Language: Английский

Citations

0
Multiple Ferroic Orderings in Lead-Free Hybrid Material Induced by Molecular Asymmetric Modification DOI
Bo Zhuang,

Lei Pan,

Zhi-Long Li

et al.

ACS Materials Letters, Journal Year: 2025, Volume and Issue: unknown, P. 1540 - 1546

Published: March 24, 2025

Language: Английский

Citations

0
Two 3D Rare-Earth Double Perovskite Materials Constructed with a Pair of Enantiomers DOI
Sun Xiao,

Yuting Li,

Xinyu Qiu

et al.

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 6, 2025

Organic-inorganic hybrid chiral small-molecule materials combine the inherent properties of both components; however, studies integrating chirality with rare-earth double-perovskite are limited. In this work, we synthesized two enantiomers three-dimensional (3D) double-perovskites, [R-3-HDMP]2CsEu(NO3)6 (1) and [S-3-HDMP]2CsEu(NO3)6 (2), by reacting R-3-HDMP S-3-HDMP (where 3-HDMP = 3-hydroxy-N,N-dimethylpyrrole) CsNO3 Eu(NO3)3 in a 2:1:1 ratio within an acidic solution. Both R-3-HDMPI S-3-HDMPI crystallize space group P212121 at room temperature, exhibiting transition from SHG-on to SHG-off (SHG second harmonic generation) upon heating cooling. The temperature-dependent X-ray single-crystal diffraction analysis carried out on compound 1 2, before after phase transition, disclosed transformation their groups noncentrosymmetric centrosymmetric. Additionally, incorporation elements as B-site cations imparts exceptional fluorescence compounds. These effectively merge unique characteristics molecules luminescence structures, paving way for innovative optical devices advanced information processing technologies.

Language: Английский

Citations

0
3D Lead‐Free Double Perovskite via Anchoring A‐Site Cation for Ultralow Dose and Stable X‐Ray Detection DOI

Qingshun Fan,

Haojie Xu,

Zeng‐Kui Zhu

et al.

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: April 7, 2025

Abstract 3D lead‐free hybrid double perovskites exhibit remarkable potential for direct X‐ray detection owing to their strong photon attenuation capabilities, efficient charge mobility, and low‐cost fabrication. However, the development of new based on large organic cations remains challenging due Goldschmidt tolerance factor constraint, which impedes further exploration in radiation detection. Herein, a perovskite (Mor) 2 RbSbI 6 ( 1 , Mor = morpholinium) is synthesized, featuring dense framework anchored by A‐site cations. The high‐quality single crystals present high mobility‐lifetime product (1.52 × 10 −3 cm V −1 ) low dark current drift, enabling it achieve simultaneously sensitivity (1.09 4 µC Gy air −2 an ultralow limit (3.1 nGy s under identical operating voltage. Meanwhile, cation anchoring strategy prevents ion migration‐induced structural collapse during detection, thereby improving its hardness stability. These findings provide crystal insights design types materials “green” high‐performance detectors.

Language: Английский

Citations

0