Junhua Luo

Ultra‐Efficient Circularly Polarized Luminescence in Chiral In‐Sb Chlorides with Near‐Unity Quantum Yield

Tianqi Chen, Xin Dong, Zhijin Xu, Yaru Geng et autres

ABSTRACT Circularly polarized luminescence (CPL) materials hold significant promise in advanced optoelectronics. However, it still remains challenging to obtain chiral metal halides with simultaneously a large luminescence dissymmetry factor ( g lum ) and high photoluminescence quantum yield (PLQY). Inspired by the …

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Oriented perovskite ferroelectric wafers for sensitive self-driven X-ray detection

Jianbo Wu, Shihai You, Ruiqing Li, Cunjian Lin et autres

Abstract Maintaining macroscopic ferroelectric polarization in the polycrystalline state is always challenging, due to the random orientation of polar axes. This directly leads to reported perovskite polycrystalline wafer X-ray detectors still rely on external voltage bias, resulting in high energy consumption and …

Flexible Single‐Crystalline Perovskite Ferroelectric Thin Film for Efficient Self‐Driven X‐ray Detection

Qianwen Guan, Zhenyue Wu, Huang Ye, Chengshu Zhang et autres

Abstract Flexible X‐ray detectors with a direct‐conversion working mode have attracted tremendous attention in security checks, medical diagnostics, industrial inspection, and scientific research. As promising flexible X‐ray detection materials, organic‐inorganic hybrid perovskites (OIHPs) offer significant advantages, including efficient X‐ray absorption, excellent charge …

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Flexible Single‐Crystalline Perovskite Ferroelectric Thin Film for Efficient Self‐Driven X‐ray Detection

Qianwen Guan, Zhenyue Wu, Huang Ye, Chengshu Zhang et autres

Abstract Flexible X‐ray detectors with a direct‐conversion working mode have attracted tremendous attention in security checks, medical diagnostics, industrial inspection, and scientific research. As promising flexible X‐ray detection materials, organic‐inorganic hybrid perovskites (OIHPs) offer significant advantages, including efficient X‐ray absorption, excellent charge …

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Radiation‐Induced Photovoltaic Effect in Multilayer Dion–Jacobson Hybrid Perovskite Ferroelectric Toward High‐Performance Self‐Driven X‐Ray Detection

Chang Qu, Qianwen Guan, Ye Huang, Lijun Xu et autres

Abstract Multilayered hybrid perovskite ferroelectrics (MHPF) have demonstrated remarkable potential for self‐driven X‐ray detection owing to their intrinsic spontaneous polarization, high absorption coefficient, and superior semiconducting properties. However, recent studies on self‐driven X‐ray detectors have mainly focused on Ruddlesden–Popper (RP) type perovskites, …

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Metal‐Free Molecular Debye‐Type Relaxor Ferroelectric Crystals Enable Broadband Photo‐Pyroelectric Detection

Qingshun Fan, Pengfei Zhu, Yi Liu, Yu Ma et autres

Relaxor ferroelectrics have shown promising potential for various device applications, such as medical ultrasound transducers, pyroelectric infrared detectors, and electro-optic elements. Currently, relaxor ferroelectrics primarily consist of inorganic oxides, while achieving a pronounced relaxation in metal-free molecular ferroelectrics remains challenging due to …

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Competitive Chirality Induction in Two‐dimensional Germanium Iodide Perovskites Enabling Highly Anisotropic Nonlinear Optical Response

Yan Fu, Kai Li, Xiaoqi Li, Yicong Lv et autres

Abstract Chiral metal halide perovskites (CMHPs) are a promising class of chiroptical materials with significant potential applications in chiral‐optoelectronic and chiral‐spintronic devices. However, their chirality induction generally stems from the incorporation of chiral ligands, which constitutes compositional diversity and functional versatility. Herein, …

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Competitive Chirality Induction in Two‐dimensional Germanium Iodide Perovskites Enabling Highly Anisotropic Nonlinear Optical Response

Yan Fu, Kai Li, Xiaoqi Li, Yicong Lv et autres

Abstract Chiral metal halide perovskites (CMHPs) are a promising class of chiroptical materials with significant potential applications in chiral‐optoelectronic and chiral‐spintronic devices. However, their chirality induction generally stems from the incorporation of chiral ligands, which constitutes compositional diversity and functional versatility. Herein, …

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Designing an all-organic wide bandgap ultraviolet nonlinear optical crystal

Shanshan Chen, Liangmeng Zhu, Tao Ouyang, Chen Xu et autres

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Anomalous Photovoltaic Effect in a Chiral Alternating‐Cation Intercalation‐Type Perovskite for Efficient Self‐Driven X‐Ray Detection

Qianwen Guan, Zhenyue Wu, Huang Ye, Chengshu Zhang et autres

Abstract Organic–inorganic hybrid perovskites (OIHPs) exhibiting intrinsic anomalous photovoltaic (APV) effects have attracted considerable attention due to their exceptional optoelectronic and photovoltaic properties. However, the ionizing radiation‐induced APV effect, a promising mechanism for self‐powered X‐ray detection, remains underexplored in OIHPs. Here, this …

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Methylammonium intercalation reorienting aromatic amine cations in 2D multilayered perovskite toward efficient self-driven X-ray detection

Yaru Geng, Qianwen Guan, Ruiqing Li, Ye Huang et autres

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Environmental‐Friendly Self‐Powered Polarization Photodetector Based on Lead‐Free Halide Double Perovskite Single Crystals with Asymmetric Contacts

Jiyan Wu, Huang Ye, Hang Li, Zeng‐Kui Zhu et autres

Abstract 2D lead‐free halide double perovskites (HDPs) are distinguished by their low toxicity and superior stability, offering a promising avenue for environmentally friendly polarization photodetection due to their intrinsic crystal anisotropy and exceptional optoelectronic properties. However, the realization of self‐powered polarization detection …

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