Gradient Bandgap‐Tunable Perovskite Microwire Arrays toward Flexible Color‐Cognitive Devices DOI
Yue Fu, Meng Yuan, Yingjie Zhao

et al.

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(11)

Published: Jan. 2, 2023

Abstract Color‐cognitive detection plays an important role in many developing applications such as optical sensing, high‐solution imaging, wearable biometric monitoring, and human visual cognitive system. Although color‐cognitive devices have been demonstrated, the large size, complex manufacturing, high cost, non‐flexible processing impede their for distinguishing color information. Herein, gradient bandgap‐tunable perovskite microwire arrays with excellent crystallinity pure crystallographic orientation are realized by synergy of capillary‐bridge assembly method mild component engineering processing, yielding high‐performance integrated spectral resolution 14 nm ranging from 405 to 760 nm, responsivities over 10 3 A W −1 , detectivities 15 Jones. Furthermore, flexible demonstrated accurately recognizing similar colors, which can be applied blindness correction. The efficient recognition performances, together open new opportunities on‐chip integration based on arrays.

Language: Английский

Realization of vis–NIR Dual-Modal Circularly Polarized Light Detection in Chiral Perovskite Bulk Crystals DOI
Yu Peng, Xitao Liu, Lina Li

et al.

Journal of the American Chemical Society, Journal Year: 2021, Volume and Issue: 143(35), P. 14077 - 14082

Published: Aug. 24, 2021

Circularly polarized light (CPL)-sensitive direct detection is attracting increasing attention owing to its various optical technology applications and ultracompact device structures. However, current CPL-sensitive mainly focuses on a single mode, whereas the visible-near-infrared (vis-NIR) dual-modal detection, which important for improving sensitivity night-vision performance, still remains be explored. Here, first time, vis-NIR presented in bulk crystals of two-dimensional chiral perovskite (R-BPEA)2PbI4 (R-BPEA = (R)-1-(4-bromophenyl)ethylammonium). Benefiting from strong light-matter interaction layered structure, shows two-photon absorption (TPA) coefficient up 55 cm/MW, almost falls around highest value 2D hybrid perovskites. Notably, exhibits high detecting performance under both visible (520 nm) NIR (800 nm), with on/off ratios higher than 103, anisotropy factors photocurrent 0.1. This work will shed design new semiconductors large TPA promote their detection.

Language: Английский

Citations

114
On-chip mid-infrared photothermoelectric detectors for full-Stokes detection DOI Creative Commons
Mingjin Dai, Chongwu Wang,

Bo Qiang

et al.

Nature Communications, Journal Year: 2022, Volume and Issue: 13(1)

Published: Aug. 5, 2022

Abstract On-chip polarimeters are highly desirable for the next-generation ultra-compact optical and optoelectronic systems. Polarization-sensitive photodetectors relying on anisotropic absorption of natural/artificial materials have emerged as a promising candidate on-chip owing to their filterless configurations. However, these can only be applied detection either linearly or circularly polarized light, not applicable full-Stokes detection. Here, we propose demonstrate three-ports comprising chiral plasmonic metamaterial-mediated mid-infrared By manipulating spatial distribution metamaterials, could convert polarization-resolved absorptions corresponding photovoltages three ports through photothermoelectric effect. We utilize developed polarimeter in an imaging demonstration showing reliable ability polarization reconstruction. Our work provides alternative strategy developing with bandgap-independent operation range mid-infrared.

Language: Английский

Citations

103
Chiral Rashba Ferroelectrics for Circularly Polarized Light Detection DOI
Chang‐Chun Fan, Xiang‐Bin Han, Bei‐Dou Liang

et al.

Advanced Materials, Journal Year: 2022, Volume and Issue: 34(51)

Published: Sept. 21, 2022

Direct detection of circularly polarized light (CPL) is a challenging task due to limited materials and ambiguous structure-property relationships that lead low distinguishability the helicities. Perovskite ferroelectric semiconductors incorporating chirality provide new opportunities in dealing with this issue. Herein, pair 2D chiral perovskite ferroelectrics reported, which have enhanced CPL performance interplays among lattice, photon, charge, spin, orbit. The chirality-transfer-induced chiral&polar phase enhances asymmetric nature photoactive sublattice achieves switchable self-powered via bulk photovoltaic effect. single-crystal-based device exhibits CPL-sensitive under 430 nm an factor 0.20 for left- right-CPL differentiation, about two times pure counterparts. ascribed Rashba-Dresselhaus effect originates from inversion asymmetry strong spin-orbit coupling, shown large Rashba coefficient, demonstrated by density functional theory calculation excited photoluminescence measurement. These results perspectives on direct ferroelectrics-based chiroptics spintronics.

Language: Английский

Citations

93
Recent Progress of Polarization‐Sensitive Perovskite Photodetectors DOI

Hong‐Yi Hou,

Shuo Tian,

Heng‐Ru Ge

et al.

Advanced Functional Materials, Journal Year: 2022, Volume and Issue: 32(48)

Published: Sept. 20, 2022

Abstract Polarization‐sensitive photodetectors are gaining numerous attention since polarization detection is important in geological remote sensing, atmospheric monitoring, military recon, and medical examination. Among various reported photoactive materials for photodetectors, metal halide perovskites have outstanding advantages such as tunable band gaps, excellent optoelectronic properties, easy fabrication. Moreover, the characteristics of crystal structure anisotropy controllable growth orientation perovskite crystals endow photodetector with ability to identify light states. This review outlines recent research progress on polarization‐sensitive detection. Firstly, key device parameters introduced. Then, detectors field linear circular reviewed according different principles response. Finally, challenges discussed.

Language: Английский

Citations

72
Circularly Polarized Light Responsive Materials: Design Strategies and Applications DOI
Yiping Liu, Pengyao Xing

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(49)

Published: March 19, 2023

Abstract Circularly polarized light (CPL) with the end of optical vector traveling along circumferential trajectory shows left‐ and right‐handedness, which transmits chiral information to materials via complicated CPL–matter interactions. Materials circular dichroism respond CPL illumination selectively differential outputs that can be used design novel photodetectors. Racemic or achiral compounds under go through photodestruction, photoresolution, asymmetric synthesis pathways generate enantiomeric bias activity. By this strategy, helical polymers inorganic plasmonic nanostructures are synthesized directly, their intramolecular folding subsequent self‐assembly photomodulable as well. In aggregated state liquid crystal phase, sense dynamic molecular packing is sensitive brought by CPL, enabling amplification supramolecular scale. review, application‐guided strategies CPL‐responsive aimed systematically summarized discussed. Asymmetric synthesis, resolution, property‐modulation small organic compounds, polymers, nanoparticles, assemblies crystals highlighted based on important developments during last decades. Besides, applications light–matter interactions including detection biomedical also referred.

Language: Английский

Citations

66
Low‐Dimensional‐Materials‐Based Photodetectors for Next‐Generation Polarized Detection and Imaging DOI Open Access
Wei Xin, Weiheng Zhong, Yujie Shi

et al.

Advanced Materials, Journal Year: 2023, Volume and Issue: 36(7)

Published: Sept. 4, 2023

Abstract The vector characteristics of light and the vectorial transformations during its transmission lay a foundation for polarized photodetection objects, which broadens applications related detectors in complex environments. With breakthrough low‐dimensional materials (LDMs) optics electronics over past few years, combination these novel LDMs traditional working modes is expected to bring new development opportunities this field. Here, state‐of‐the‐art progress LDMs, as polarization‐sensitive components even imaging, main focus, with emphasis on relationship between principle photodetectors (PPs) photoresponse mechanisms LDMs. Particularly, from view constitutive equations, existing works are reorganized, reclassified, reviewed. Perspectives challenges also discussed. It hoped that work can provide more general overview use field, sorting out way devices “more than Moore” or “beyond research.

Language: Английский

Citations

59
Symmetry-Broken 2D Lead–Tin Mixed Chiral Perovskite for High Asymmetry Factor Circularly Polarized Light Detection DOI
Bing Yao, Qi Wei, Yunqing Yang

et al.

Nano Letters, Journal Year: 2023, Volume and Issue: 23(5), P. 1938 - 1945

Published: Feb. 20, 2023

Symmetry-broken-induced spin splitting plays a key role for selective circularly polarized light absorption and carrier transport. Asymmetrical chiral perovskite is rising as the most promising material direct semiconductor-based detection. However, increase of asymmetry factor extension response region remain to be challenge. Herein, we fabricated two-dimensional tin-lead mixed with tunable in visible region. Theoretical simulation indicates that mixing tin lead breaks symmetry pure ones, resulting splitting. We then detector based on this perovskite. A high photocurrent 0.44 achieved, which 144% higher than 2D perovskite, it highest value reported perovskite-based using simple device structure.

Language: Английский

Citations

54
Multifunctional Perovskite Photodetectors: From Molecular-Scale Crystal Structure Design to Micro/Nano-scale Morphology Manipulation DOI Creative Commons
Yingjie Zhao,

Xing Yin,

Pengwei Li

et al.

Nano-Micro Letters, Journal Year: 2023, Volume and Issue: 15(1)

Published: July 29, 2023

Abstract Multifunctional photodetectors boost the development of traditional optical communication technology and emerging artificial intelligence fields, such as robotics autonomous driving. However, current implementation multifunctional detectors is based on physical combination lenses, gratings, multiple photodetectors, large size its complex structure hinder miniaturization, lightweight, integration devices. In contrast, perovskite materials have achieved remarkable progress in field due to their diverse crystal structures, simple morphology manipulation, excellent optoelectronic properties. this review, we first overview structures manipulation techniques then summarize working mechanism performance parameters photodetectors. Furthermore, fabrication strategies advancements are highlighted, including polarized light detection, spectral angle-sensing self-powered detection. Finally, existing problems perspectives future presented. "Image missing"

Language: Английский

Citations

53
Chiral Hybrid Germanium(II) Halide with Strong Nonlinear Chiroptical Properties DOI Open Access
Hebin Wang, Junzi Li,

Haolin Lu

et al.

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(41)

Published: Aug. 23, 2023

Due to the pronounced anisotropic response circularly polarized light, chiral hybrid organic-inorganic metal halides have been regarded as promising candidates for application in nonlinear chiroptics, especially second-harmonic generation circular dichroism (SHG-CD) effect. However, designing novel lead-free with large anisotropy factors and high laser-induced damage thresholds (LDT) of SHG-CD remains challenging. Herein, we develop first germanium halide, (R/S-NEA)3 Ge2 I7 ⋅H2 O (R/S-NGI), systematically investigated its linear chiroptical properties. S-NGI R-NGI exhibit (gSHG-CD ) 0.45 0.48, respectively, along a LDT 38.46 GW/cm2 ; these were highest values among reported halides. Moreover, effective second-order optical coefficient could reach up 0.86 pm/V, which was 2.9 times higher than that commercial Y-cut quartz. Our findings facilitate new avenue toward halides, their implementation applications.

Language: Английский

Citations

42
High‐Performance Organic Narrow Dual‐Band Circular Polarized Light Detection for Encrypted Communications and Color Imaging DOI
Q. Wang,

Jinying Bao,

Yajie Zhang

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(16)

Published: Jan. 10, 2024

Conventional circularly polarized light (CPL) detectors necessitate several optical elements, posing difficulties in achieving miniature and integrated devices. Recently developed organic CPL require no additional elements but usually suffer from low detectivity or asymmetry factor (g-factor). Here, an detector with excellent a high g-factor is fabricated. By employing inverted quasi-planar heterojunction (IPHJ) structure incorporating liquid crystal film, outstanding of 1.62 developed. Unfavorable charge injection effectively suppressed by the IPHJ structure, which reduces dark current photodetector. Consequently, left 6.16 × 10

Language: Английский

Citations

18