Pyro‐Phototronic Effect Induced Circularly Polarized Light Detection with a Broadband Response

Advanced Science, Journal Year: 2024, Volume and Issue: unknown

Published: July 23, 2024

Photopyroelectric-based circularly polarized light (CPL) detection, coupling the pyro-phototronic effect and chiroptical phenomena, has provided a promising platform for high-performance CPL detectors. However, as novel detection strategy, photopyroelectric-based is currently restricted by short-wave optical response, underscoring urgent need to extend its response range. Herein, visible-to-near-infrared induced first realized in chiral-polar perovskites. Specifically, multilayered perovskites (S-BPEA)

Language: Английский

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Manipulating Chiroptical Activities in 0D Chiral Hybrid Manganese Bromides by Solvent Molecular Engineering

Small, Journal Year: 2024, Volume and Issue: unknown

Published: May 20, 2024

Abstract 0D hybrid metal halides (0D HMHs) with fully isolated inorganic units provide an ideal platform for studying the correlations between chiroptical activities and crystal structures at atomic levels. Here, through incorporation of different solvent molecules, a series chiral manganese bromides ( RR/SS ‐C 20 H 28 N 2 ) 3 MnBr 8 ·2X (X = C 5 OH, CH or O) are synthesized to elucidate their properties. They show negligible circular dichroism signals Mn absorptions due 2v ‐symmetric [MnBr 4 ] 2− tetrahedra. However, they display distinct circularly polarized luminescence (CPL) continuously increased asymmetry factors g lum from 10 −4 OH) −3 O). The value is structurally revealed originate enhancement 2‐ tetrahedral bond‐angle distortions, presence molecules. Furthermore, )MnBr ·H O enantiomers larger distortions tetrahedra based on hydrobromic acid‐induced structural transformation ·2H enantiomers. Therefore, such exhibit enhanced CPL | up 1.23 × −2 . This work provides unique insight into enhancing in HMH systems.

Language: Английский

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X‐ray‐ultraviolet–visible‐near‐infrared photoresponses realized in a lead‐free hybrid perovskite ferroelectric through light‐induced ferro‐pyro‐phototronic effect

InfoMat, Journal Year: 2024, Volume and Issue: 6(10)

Published: July 1, 2024

Abstract Due to the built‐in electric field induced by spontaneous polarization in hybrid perovskite (HP) ferroelectrics, devices based on them exhibit excellent performance self‐powered photodetection. However, most of photodetector are made lead‐based HP ferroelectrics and have a relatively narrow photoresponse waveband. Although lead‐free HPs solve problem lead toxicity, their optoelectronic is inferior that waveband limited its optical band gap, which hinders further application. To this problem, herein, ferroelectric (HDA)BiI 5 (HDA hexane‐1,6‐diammonium) with large shows an enhanced photocurrent achieves x‐ray‐ultraviolet–visible‐near‐infrared (x‐ray‐UV–Vis–NIR) through ferro‐pyro‐phototronic (FPP) effect. The ferroelectric, pyroelectric, photovoltaic characteristics coupled together single‐phase effective way improve devices. What particularly attractive FPP effect not only improves , but also broadband photoresponses beyond absorption range. Especially, current boosting exceptional contrast ~1100% 2400% under 520 637 nm, respectively, associated Meanwhile, single crystal significant effects even high‐energy x‐ray, owns outstanding sensitivity 170.7 μC Gy −1 cm −2 lower detection limit 266 nGy s at 0 V bias. Therefore, it great significance study coupling multiple physical device ferroelectrics. image

Language: Английский

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Polar Alternating Cations Intercalated Hybrid Perovskite with Iodine‐Substituted Spacers Toward Efficient Passive X‐Ray Detection

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: July 30, 2024

Abstract 2D hybrid perovskites, with their high X‐ray absorption and extended carrier transport, present excellent promise for efficient direct detection. However, most of the current devices require external bias voltage, which results in need significant energy consumption severe ion migration, therefore, it is urgent to develop new types materials achieving passive Herein, two novel chiral polar alternating cations intercalation (ACI)‐type perovskite materials, named ( R / S ‐PPA)(IEA)PbBr 4 1‐ , )‐PPA = ‐1‐phenylpropylamine; IEA iodoethylamine), are constructed by integrating aromatic spacer ‐PPA iodine‐substituted IEA. Various intermolecular interactions, such as I···I, C─H···I, π···π introduced due introduction I‐substituted chain amines, effectively suppresses migration thus lead improved operational stability. The device along axis displays superior detection performance, relatively sensitivity an ultra‐low limit (LoD) 3.0 nGy s −1 making first ACI‐type material realizing Furthermore, also presents low dark drift exceptional irradiation This work provides thought using high‐performance

Language: Английский

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Multi‐axial Self‐driven X‐ray Detection by a Two‐dimensional Biaxial Hybrid Organic‐Inorganic Perovskite Ferroelectric

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(44)

Published: Aug. 2, 2024

Metal halide perovskite ferroelectrics combining spontaneous polarization and excellent semiconducting properties is an ideal platform for enabling self-driven X-ray detection. However, achievements to date have been only based on uniaxiality, which increases the complexity of device fabrication. Multi-axial ferroelectric materials multiple equivalent directions, making them potentially amenable multi-axial detection, but report these types still a huge blank. Herein, high-quality (BA)

Language: Английский

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Dion‐Jacobson Type Lead‐Free Double Perovskite with Ultra‐Narrow Aromatic Interlayer Spacing for Highly Sensitive and Stable X‐ray Detection

Small, Journal Year: 2024, Volume and Issue: 20(30)

Published: March 8, 2024

Abstract The low‐toxic and environmentally friendly 2D lead‐free perovskite has made significant progress in the exploration of “green” X‐ray detectors. However, gap detection performance between them their lead‐based analogues remains a matter concern that cannot be ignored. To reduce this gap, shortening interlayer spacing to accelerate migration collection carriers is promising strategy. Herein, Dion‐Jacobson (DJ) double (4‐AP) 2 AgBiBr 8 ( 1 , 4‐AP = 4‐amidinopyridine) with an ultra‐narrow 3.0 Å, constructed by utilizing π‐conjugated aromatic spacers. Strikingly, subsequent enhanced carrier transport increased crystal density lead detectors based on bulk single crystals high sensitivity 1117.3 µC Gy −1 cm −2 superior vast majority similar perovskites. In particular, tight connection inorganic layers divalent cations enhances structural rigidity stability, further endowing detector ultralow dark current drift (3.06 × 10 −8 nA s V 80 V), excellent multiple cycles switching irradiation as well long‐term environmental stability (maintains over 94% photoresponse after 90 days). This work brings perovskites one step closer realizing efficient practical green applications.

Language: Английский

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Confinement‐Driven Bulk Photovoltaic in Lead‐Free Hybrid Perovskite for Self‐Powered X‐Ray Detection

Advanced Optical Materials, Journal Year: 2024, Volume and Issue: 12(19)

Published: May 16, 2024

Abstract Lead‐free hybrid perovskites (HPs) are considered as environmentally friendly photodetection materials. However, there few studies on self‐powered in lead‐free HPs, and most of them achieved through the introduction chiral ammonium cations induced bulk photovoltaic effect (BPVE). Notably, enantiomeric pure difficult to synthesize, quantity is small price high. Therefore, choosing achiral induce BPVE HPs crucial. Herein, 1,3‐ bis (aminomethyl)cyclohexane (1,3‐BMACH) exploited confinement (1,3‐BMACH)BiI 5 , then X‐ray detection successfully realized. Due large space zero‐dimensional (0 D) (MXD)BiI (MXD meta‐xylylenediammonium), not obvious, resulting disorderly arrangement MXD 2+ a centrosymmetry structure . Benefiting from photovoltage (1.0 V) under X‐ray, its single crystal devices exhibit ultra‐high sensitivity 170 µC Gy −1 cm −2 extremely low limit 49 nGy s mode, which almost surpassing low‐dimensional single‐phase at 0 V bias. This work has promoted application field detection.

Language: Английский

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Recent Advances in Emerging Polarization‐Sensitive Materials: From Linear/Circular Polarization Detection to Neuromorphic Device Applications

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

Published: Jan. 19, 2025

Abstract Polarization is an important property of light that provides some additional information about the such as polarizability and phase. With rise polarized photodetectors, detection may bring a new way to better understand information. Recent works have shown polarization detectors demonstrated excellent potential in field neuromorphology, which great significance for further development artificial intelligence. This review comprehensively summarizes present research status detectors, including linearly (LPPDs) circularly (CPPDs). In order assess current state detecting linearly/circularly light, operating principles performance parameters are presented. Next, universal semiconductors used LPPDs CPPDs systematically classified summarized. Based on this, applications fields intelligence, imaging, digital signal processing then reviewed. Finally, challenging opportunities discussed, followed by overview future prospects this promising field.

Language: Английский

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Stable Self-powered X-ray Detection with Low Detection Limit By a Green Halide Hybrid Perovskite Ferroelectric Crystal

Chemical Science, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

The remarkable FE-PV effect driven stable and self-powered X-ray detection in a green halide hybrid ferroelectric crystal [H 2 mdap]BiBr 5 with relatively high sensitivity, low limit, good stability, advancing towards safer more detection.

Language: Английский

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Chiral-Polar Photovoltage-Driven Efficient Self-Powered Circularly Polarized Light Detection in Three-Dimensional Hybrid Perovskites

Journal of the American Chemical Society, Journal Year: 2025, Volume and Issue: 147(11), P. 9686 - 9693

Published: March 5, 2025

The chiral-polar photovoltaic effect (CPPE), widely present in chiral hybrid perovskites, has brought an unprecedented opportunity for self-powered circularly polarized light (CPL) detection. However, on account of spatial limitations the crystal structure, currently reported CPPE primarily focuses low-dimensional which have a low CPL photoresponse restricted by lower carrier transport efficiency compared to three-dimensional perovskites. For first time, we photovoltage-driven efficient detection MHyPbBr3 (MHy = Methylhydrazinium). Coupled with significant spontaneous polarization (17.1 μC cm–2) and superior semiconductor properties, exhibits large mobility-lifetime product (1.9 × 10–2 cm2 V–1) stable bulk photovoltage (3.9 V). Furthermore, devices indicate robust angle anisotropy factor 0.39. More importantly, benefiting from excellent performance, high responsivity detectivity values up 39.2 mA W–1 5.8 1012 Jones, respectively, are presented at zero bias, fall around highest This work will contribute research novel perovskite semiconductors promote their application

Language: Английский

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