ACS Photonics最新文献_第6页

Time- and Frequency-Domain Study for Electron Beams Penetrating Dielectric Nanospheres: Fingerprints of Cherenkov and Transition Radiation 电子束穿透介电纳米球的时频域研究：切伦科夫指纹和跃迁辐射

IF 6 1区物理与天体物理

ACS Photonics Pub Date : 2026-10-07 Epub Date: 2026-09-25 DOI: 10.1021/acsphotonics.6c01605

Wenhua Zhao, Christos Tserkezis, N. Asger Mortensen, Kurt Busch

{"title":"Time- and Frequency-Domain Study for Electron Beams Penetrating Dielectric Nanospheres: Fingerprints of Cherenkov and Transition Radiation","authors":"Wenhua Zhao, Christos Tserkezis, N. Asger Mortensen, Kurt Busch","doi":"10.1021/acsphotonics.6c01605","DOIUrl":"10.1021/acsphotonics.6c01605","url":null,"abstract":"We present a theoretical study of Cherenkov and transition radiationfor swift electron beams penetrating dielectric nanospheres usingmaterial models of different sophistication. Specifically, we performa combined time-domain (numerically, via the discontinuous Galerkintime-domain method) and frequency-domain (numerically and analytically,via Mie-based theory) study, including the induced-field distribution,cathodoluminescence (CL) multipole/directional decomposition, as wellas the time-dependent angular power flow. For low velocities belowthe Cherenkov threshold, we show that transition radiation is dominantin the far-field CL, and the near-fields at the transition pointsare primarily responsible for the main features observed in the far-field.For higher velocities far beyond the Cherenkov threshold, we identifythe fingerprints of the observable Cherenkov front. Specifically,a constant-permittivity model allows us to isolate the respectivecontributions of CR and TR to the far-field radiation, thereby facilitatingthe interpretation of the results for a more realistic material modelthat includes material resonances. Our combined time- and frequency-domainframework provides a direct view of radiative excitation channelsfor swift electron beams penetrating dielectric nanoparticles, therebyrevealing their interplay beyond the conventional frequency-domainanalyses.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"13 19","pages":"5826–5837"},"PeriodicalIF":6.0,"publicationDate":"2026-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149049960","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Color-Space Framework for Spectral Selectivity in Optical See-Through AR Displays 光学透明AR显示光谱选择性的色彩空间框架

IF 6 1区物理与天体物理

ACS Photonics Pub Date : 2026-10-07 Epub Date: 2026-08-23 DOI: 10.1021/acsphotonics.6c01393

Inchul Woo, Hyeokjung Kang, Namkyoo Park

{"title":"A Color-Space Framework for Spectral Selectivity in Optical See-Through AR Displays","authors":"Inchul Woo, Hyeokjung Kang, Namkyoo Park","doi":"10.1021/acsphotonics.6c01393","DOIUrl":"10.1021/acsphotonics.6c01393","url":null,"abstract":"Optical see-through augmented reality (AR) displays mustrendervivid virtual imagery overlaid on a faithful view of the backgroundreal-world under ambient illumination. In this scenario, the virtualchannel (VC) and real channel (RC) are perturbed asymmetrically: asthe ambient level grows, it scales the transmitted real scene multiplicativelywhile adding a see-through pedestal that washes out the perceivedvirtual image. This multiplicative-additive asymmetry turns ambientAR into a coupled two-channel color problem and complicates the seamlessblending of virtual and real imagery, as well as their control throughsource power (sp) andscreen transparency. Here, we develop a unified, device-independenttwo-channel color pipeline that jointly analyzes the virtual and realchannels through CIELAB gamut evolution, transmitted-scene ΔE2000, and a chromatic-containment criterionon the a*b* plane, from which we derive a minimum source power map sp*(α, T) for theambient level α and transparency T of the transparentscreen (TS). A filter-parameter analysis confirms that an RGB-selectiveTS reduces the required sp by ∼30% relative to a spectrally flat TS at the practicaldaylight-like operating point of AR (T = 0.8, α= 1.0), while preserving a larger VC chromatic footprint with modestmatched-throughput transmitted-scene distortion relative to an SF-TS(mean ΔE2000 ≤ 3 for T ≥ 0.8). Scene-level head-up display renderingsfurther illustrate that the ambient-aware power schedule improvessaturation and chromatic compatibility within the assumed face-gasketoptical configuration. Taken together, our results establish the importanceof two-channel color analysis that accounts for ambient light, thesee-through screen, and the projection source.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"13 19","pages":"5703–5712"},"PeriodicalIF":6.0,"publicationDate":"2026-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148805736","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Standoff Time-Resolved SECARS on Ag-Decorated Silicon Nanowires 银修饰硅纳米线上的对峙时间分辨光谱

IF 6 1区物理与天体物理

ACS Photonics Pub Date : 2026-10-07 Epub Date: 2026-09-24 DOI: 10.1021/acsphotonics.6c01317

Marco Polastri, Antonio Alessio Leonardi, Ileana Ielo, Barbara Fazio, Giulio Cerullo, Alessia Irrera, Nicola Coluccelli

{"title":"Standoff Time-Resolved SECARS on Ag-Decorated Silicon Nanowires","authors":"Marco Polastri, Antonio Alessio Leonardi, Ileana Ielo, Barbara Fazio, Giulio Cerullo, Alessia Irrera, Nicola Coluccelli","doi":"10.1021/acsphotonics.6c01317","DOIUrl":"10.1021/acsphotonics.6c01317","url":null,"abstract":"Surface-enhanced coherent anti-Stokes Raman scattering(SECARS)has been widely explored for ultrasensitive vibrational spectroscopy,primarily in microscopy configurations employing high-numerical-apertureoptics. Here, we demonstrate standoff detection of molecular vibrationalfingerprints using plasmon-enhanced time-resolved SECARS at a workingdistance of 20 cm. We employ Ag-decorated silicon nanowires as a plasmonicsubstrate supporting the analyte molecules. Broadband pump (575 nm)and Stokes (625 nm) femtosecond pulses together with a narrowbanddelayed probe (515 nm) are used to generate the SECARS signal, withexcitation and anti-Stokes wavelengths overlapping the plasmonic responseof the substrate. System performance is first calibrated through Ramanand CARS measurements of liquid pyridine and compressed Na2DPA powder. SECARS spectra of Rhodamine B and Na2DPA depositedon Ag-SiNWs are then recorded in backscattering at 20 cm distance,revealing clear vibrational fingerprints down to 10–7 M for Rhodamine B and 10–6 M for Na2DPA. The Na2DPA measurements provide an estimate of theoverall SECARS/Raman signal amplification, yielding an effective enhancementof the order of 1013 under the present experimental conditions.These results establish a proof-of-concept for plasmon-enhanced standoffvibrational spectroscopy from analyte-loaded nanostructured substrates,including dipicolinate targets relevant to bacterial-spore detection.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"13 19","pages":"5674–5684"},"PeriodicalIF":6.0,"publicationDate":"2026-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149050158","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Biuret-Engineered Mixed-Cation Perovskite with High Optical Gain for Single-Mode VCSELs 具有高光增益的双缩脲工程混合阳离子钙钛矿用于单模vcsel

IF 6 1区物理与天体物理

ACS Photonics Pub Date : 2026-10-07 Epub Date: 2026-09-04 DOI: 10.1021/acsphotonics.6c01527

Xinyi Kuang, Zijun Zhan, Shuang Cai, Kai Feng, Hongzhi Zhou, Haihong Zheng, Peiyao Ren, Jingjing Yang, Caisong Yan, Kehao Hu, Fengxian Zhou, Zhengzheng Liu, Zeyu Zhang, Zhiping Hu, Juan Du

{"title":"Biuret-Engineered Mixed-Cation Perovskite with High Optical Gain for Single-Mode VCSELs","authors":"Xinyi Kuang, Zijun Zhan, Shuang Cai, Kai Feng, Hongzhi Zhou, Haihong Zheng, Peiyao Ren, Jingjing Yang, Caisong Yan, Kehao Hu, Fengxian Zhou, Zhengzheng Liu, Zeyu Zhang, Zhiping Hu, Juan Du","doi":"10.1021/acsphotonics.6c01527","DOIUrl":"10.1021/acsphotonics.6c01527","url":null,"abstract":"Metalhalide perovskites are attractive gain media forcoherentlasers due to their high optical gain, strong photoluminescence andtunable bandgap. Mixed-cation design can optimize lattice structuresand mitigate nonradiative recombination, but mismatched crystallizationand incomplete precursor conversion may introduce grain defects andmetallic Pb0 species. Pb0-related deep trapsexacerbate carrier losses and deteriorate overall lasing performance.This work presents a bifunctional modification strategy using biuretto suppress Pb0 precipitation and passivate defects inmixed-cation perovskites. Owing to carbonyl and amino groups, biuretsimultaneously restrains Pb0 formation via Lewis acid–basecoordination and passivates defects through hydrogen bonding withbromide ions. The modified perovskite films possess a material gainof 3754 cm–1, an extended gain lifetime of 148 ps,a low amplified spontaneous emission (ASE) threshold of 2.60 μJcm–2, and improved long-term ASE stability. Theconstructed single-mode vertical-cavity surface-emitting laser (VCSEL)delivers outstanding lasing performance with a narrow emission linewidth of 0.068 nm and a high Q factor of 7848. Thisstudy reveals the relationship between Pb0 inhibition,defect passivation and optical gain, and offers a practical routefor high-performance perovskite lasers.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"13 19","pages":"5771–5779"},"PeriodicalIF":6.0,"publicationDate":"2026-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148895527","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Photothermal-Induced In Situ Crystallization of Perovskite Nanocrystals and the Application on Micro–Nano Defect Detection 光热诱导钙钛矿纳米晶体原位结晶及其在微纳缺陷检测中的应用

IF 6 1区物理与天体物理

ACS Photonics Pub Date : 2026-10-07 Epub Date: 2026-09-08 DOI: 10.1021/acsphotonics.6c01226

Xue Zhao, Jianfei Wang, Menglu Chen

{"title":"Photothermal-Induced In Situ Crystallization of Perovskite Nanocrystals and the Application on Micro–Nano Defect Detection","authors":"Xue Zhao, Jianfei Wang, Menglu Chen","doi":"10.1021/acsphotonics.6c01226","DOIUrl":"10.1021/acsphotonics.6c01226","url":null,"abstract":"Micro–nano defects on the optical elements arecriticalfactors limiting the maximum light intensity tolerance and systemreliability. Developing an accurate and efficient method for defectdetection remains a significant technical challenge. Notably, underlaser irradiation, defects of varying magnitudes exhibit differentphotothermal absorption effects, triggering localized photothermalheating. This photothermal effect facilitates the in situ growth ofperovskite nanocrystals (NCs) at the defect sites, which could workas fluorescent labeling of defects. Inspired by this phenomenon, wepropose a photothermal-induced in situ crystallization method of perovskiteNCs. First, the interaction between light and optical materials generatesa photothermal effect. Because micro–nano defects have strongerphotothermal absorption capabilities, the thermal energy would preferentiallyaccumulate at the defect sites. Once the temperature exceeds a threshold,selective crystallization of perovskite NCs occurs specifically atthe defect locations, thereby enabling the fluorescent labeling ofdefects. This process enables the conversion of optical informationfrom light absorption to fluorescence emission, thus completing thefluorescent labeling and optical imaging of the defects. Optical elementswith a surface roughness of 17.48 nm were used to validate the proposeddetection method. We also show examples of recognizable nanofabricatedfeatures with depths and widths of 100 and 200 nm, respectively. Furthermore,this method exhibits chemical contaminant sensitivity up to 0.039ppm. The photothermally induced method establishes an optical informationconversion mechanism based on light–matter interaction. Itshows great potential for quality assessment of optical components.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"13 19","pages":"5630–5640"},"PeriodicalIF":6.0,"publicationDate":"2026-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148909056","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Near-3 Megapixel Mid-Wave Infrared HgTe Colloidal Quantum Dot Focal Plane Array with 5 μm Pixel Pitch 近300万像素中波红外高温胶体量子点焦平面阵列，像素间距为5 μm

IF 6 1区物理与天体物理

ACS Photonics Pub Date : 2026-10-07 Epub Date: 2026-09-11 DOI: 10.1021/acsphotonics.6c00697

Wenbin Zuo, Libin Tang, Pin Tian, Gang Wu, Zhengchao Chen, Henghao Feng, Tong Zhang, Qi Ma, Zhuanggang Yang, Yongliang Li, Yuanqing Feng, Wenhao Pan, Rongbin Ji

{"title":"Near-3 Megapixel Mid-Wave Infrared HgTe Colloidal Quantum Dot Focal Plane Array with 5 μm Pixel Pitch","authors":"Wenbin Zuo, Libin Tang, Pin Tian, Gang Wu, Zhengchao Chen, Henghao Feng, Tong Zhang, Qi Ma, Zhuanggang Yang, Yongliang Li, Yuanqing Feng, Wenhao Pan, Rongbin Ji","doi":"10.1021/acsphotonics.6c00697","DOIUrl":"10.1021/acsphotonics.6c00697","url":null,"abstract":"Currently, mid-wave infrared (MWIR)focal plane arrays(FPAs) areadvancing toward lower cost, higher operating temperatures, miniaturization,and enhanced resolution. These developments present challenges forMWIR FPAs based on traditional epitaxial infrared materials such asHgCdTe and InAsSb, which are constrained by complex technologicalprocesses. HgTe colloidal quantum dots (CQDs), as zero-dimensionalsemiconductors, have significantly enhanced the design freedom ofFPAs and the operating temperature of devices due to their uniquequantum confinement effect, phonon bottleneck effect, and the advantagesof solution processing. This provides the potential for the manufactureof MWIR FPAs with larger arrays and smaller pixels (approaching theoptical diffraction limit). Here, we have fabricated a high-temperatureexciton extraction-enhanced barrier-type MWIR HgTe CQD FPA with anadvanced 5 μm pixel pitch and 1920×1536 array specification.The cutoff wavelength is about 4 μm and the blackbody peak detectivity(D*) at zero bias and 150 K is 1 × 109 Jones. The dark current density is between 10–7 and 10–6 A/cm2 within the operatingtemperature range of 120–200 K. We have also demonstrated MWIRthermal imaging results at 120 K for varying temperature objects atdifferent operating temperatures.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"13 19","pages":"5563–5570"},"PeriodicalIF":6.0,"publicationDate":"2026-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148933241","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Miniaturized Full-Stokes Spectrometers Based on Low-Correlation Metasurface Array 基于低相关元表面阵列的小型化full - stokes光谱仪

IF 6 1区物理与天体物理

ACS Photonics Pub Date : 2026-10-07 Epub Date: 2026-09-26 DOI: 10.1021/acsphotonics.6c01928

Zhongyan Wang, Yanhao Li, Yunru Gao, Baichuan Bo, Xin Zhang, Shuo Wang, Kai Shen, Geyang Qu, Yimu Chen

{"title":"Miniaturized Full-Stokes Spectrometers Based on Low-Correlation Metasurface Array","authors":"Zhongyan Wang, Yanhao Li, Yunru Gao, Baichuan Bo, Xin Zhang, Shuo Wang, Kai Shen, Geyang Qu, Yimu Chen","doi":"10.1021/acsphotonics.6c01928","DOIUrl":"10.1021/acsphotonics.6c01928","url":null,"abstract":"Full-Stokes spectrometers hold an immense applicationvalue dueto their capability to simultaneously resolve polarization state andspectral information. Specifically, miniaturized full-Stokes spectrometersare promising for applications in real-world scenarios owing to thesignificant reduction in optical components and footprint. However,it is considerably challenging to simultaneously possess snapshotcapability, small footprint, high spectral resolution, and high spectralaccuracy. Herein, we propose a snapshot miniaturized full-Stokes computationalspectrometer with an ultracompact footprint of 24.5 μm ×24.5 μm based on silicon nitride (Si3N4) metasurfaces possessing low cross-correlation coefficients. Ourdevice achieves narrowband spectral reconstruction in the visibleregime with FWHM as narrow as 2.03 nm and a polarization angular distanceerror of 2.70° on the Poincaré sphere. For broadband spectralreconstruction, the mean absolute error (MAE) of the full-Stokes parametersis 0.056, with a high coefficient of determination (R2) of 0.977 and a cosine similarity of 0.989, alongsidea global broadband polarization angular distance error of 4.06°.This work achieves high-fidelity full-Stokes spectral reconstructionwithin a compact footprint, establishing a robust technological foundationfor ultracompact multidimensional light field perception.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"13 19","pages":"5969–5977"},"PeriodicalIF":6.0,"publicationDate":"2026-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149049958","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Giant Photoresponse in 2D Layered Semiconductors Enabled by Long-Range Exciton-Polaritons 远距离激子-极化子实现二维层状半导体的巨大光响应

IF 6 1区物理与天体物理

ACS Photonics Pub Date : 2026-10-07 Epub Date: 2026-09-10 DOI: 10.1021/acsphotonics.6c01124

Jianbin Zhang, Jibo Tang, Zhengyi Lu, Wei Dai, Zixin Gu, Ti Wang, Quanbing Guo, Hongxing Xu

{"title":"Giant Photoresponse in 2D Layered Semiconductors Enabled by Long-Range Exciton-Polaritons","authors":"Jianbin Zhang, Jibo Tang, Zhengyi Lu, Wei Dai, Zixin Gu, Ti Wang, Quanbing Guo, Hongxing Xu","doi":"10.1021/acsphotonics.6c01124","DOIUrl":"10.1021/acsphotonics.6c01124","url":null,"abstract":"Photodetection constitutes a fundamental building blockunderpinningmodern optical communication, imaging, and sensing systems. Atomicallythin transition metal dichalcogenides have emerged as promising candidatesfor next-generation photodetection devices due to their exceptionalexcitonic resonance and unparalleled compatibility with on-chip integration.However, their photodetection performance remains severely limitedby low optical absorption and short carrier diffusion distances. Here,we demonstrate an enhanced photodetection exceeding 60 folds in abroad frequency region for the bilayer WS2 integrated ona truncated one-dimensional photonic crystal. The formation of Blochsurface wave polaritons enables a high-speed and long-range propagation,accelerating efficient photoelectric conversion. By systematicallyinvestigating the photocurrent response of WS2 under differentphotonic environments, the distinct contributions from excitationenhancement and polaritonic effects are clearly revealed. Notably,correlating the spatially resolved photocurrent and the polaritontransport directly confirms the enhancement contributions from thelong-range polaritons and the modified Schottky barrier. These resultsnot only offer a novel strategy for chip-scale efficient photon detectionbased on 2D materials but also provide a versatile platform to explorepolaritonic optoelectronics.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"13 19","pages":"5609–5617"},"PeriodicalIF":6.0,"publicationDate":"2026-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148933240","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

High-Sensitivity Remote Radiation Detection Enabled by CsPbBr3 Quantum-Dot-Doped Polymer–Silica Fiber with Core-Emitting and Cladding-Dominated Transmission CsPbBr3量子点掺杂包层主导传输光纤实现高灵敏度远程辐射探测

IF 6 1区物理与天体物理

ACS Photonics Pub Date : 2026-10-07 Epub Date: 2026-09-14 DOI: 10.1021/acsphotonics.6c01874

Fan Chen, Chengyong Hu, Jianxiang Wen, Yanhua Dong, Yanhua Luo, Yi Huang, Sujuan Huang, Tingyun Wang

{"title":"High-Sensitivity Remote Radiation Detection Enabled by CsPbBr3 Quantum-Dot-Doped Polymer–Silica Fiber with Core-Emitting and Cladding-Dominated Transmission","authors":"Fan Chen, Chengyong Hu, Jianxiang Wen, Yanhua Dong, Yanhua Luo, Yi Huang, Sujuan Huang, Tingyun Wang","doi":"10.1021/acsphotonics.6c01874","DOIUrl":"10.1021/acsphotonics.6c01874","url":null,"abstract":"Metal halide perovskite quantum dots (PQDs), particularlyCsPbBr3 QDs, are promising luminescent materials for radiationdetectionowing to their strong radiation absorption and high photoluminescenceefficiency. However, the spectral overlap between absorption and emissioncan cause cumulative reabsorption losses during propagation, limitingefficient remote signal delivery. Here, a CsPbBr3 QDs-dopedpolymer-core/silica-cladding fiber (QPSF) was fabricated under ambientconditions using an improved capillary-filling method combined within situ photopolymerization. The fiber exhibits a core-emitting andcladding-dominated transmission behavior, in which luminescence isgenerated in the QDs-doped polymer core, while a fraction of the emittedlight is redirected into highly oblique trajectories within the silicacladding. These trajectories maintain lower cumulative spatial overlapwith the core and therefore experience reduced cumulative reabsorptionand scattering losses during propagation, thereby progressively increasingtheir relative contribution to the collected output. The fiber exhibitslinear UV responses across 265–385 nm, with a peak sensitivityof 471 mV/(μW·cm–2) at 365 nm, 26-foldhigher than that of a Ce/Tb co-doped fluorescent fiber (18 mV/(μW·cm–2)), and enables reliable signal delivery through a20 m silica multimode fiber. Under X-ray irradiation, the QPSF showsa linear dose-rate response with a detection limit of 51.39 nGy·s–1. Its collected RL output is about 108.5% and 206.6%of those of a commercial plastic scintillating fiber and a Bi4Ge3O12 crystal rod, respectively. Thisstudy provides a facile, cost-effective, and highly sensitive fiberplatform for radiation sensing and real-time monitoring.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"13 19","pages":"5959–5968"},"PeriodicalIF":6.0,"publicationDate":"2026-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148973625","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Tailored PbS/PbSe Double Hole Transport Layer for High-Performance Full-Inorganic Sb2S3 Indoor Photovoltaics 用于高性能全无机Sb2S3室内光伏的定制PbS/PbSe双孔传输层

IF 6 1区物理与天体物理

ACS Photonics Pub Date : 2026-10-07 Epub Date: 2026-09-20 DOI: 10.1021/acsphotonics.6c01859

Jin-Rui Cai, Hong-Zhou Gao, Yu-Han Wang, Li-Mei Lin, Zhao-Wen Chen, Zhi-Ping Huang, Dong Wei, Shui-Yuan Chen, Hong Zhang, Gui-Lin Chen

{"title":"A Tailored PbS/PbSe Double Hole Transport Layer for High-Performance Full-Inorganic Sb2S3 Indoor Photovoltaics","authors":"Jin-Rui Cai, Hong-Zhou Gao, Yu-Han Wang, Li-Mei Lin, Zhao-Wen Chen, Zhi-Ping Huang, Dong Wei, Shui-Yuan Chen, Hong Zhang, Gui-Lin Chen","doi":"10.1021/acsphotonics.6c01859","DOIUrl":"10.1021/acsphotonics.6c01859","url":null,"abstract":"The severe nonradiative recombination at the back-contact(BC)interface significantly hinders the enhancement of device performancein antimony sulfide (Sb2S3) solar cells. Oneof the attributable issues is the insufficient coverage rate of asingle-layer hole transport layer (SHTL) and the energy-level mismatchat the back interface. To tackle the above challenges, this work proposesinnovative bilayer hole transport layers (BHTLs) consisting of PbSand PbSe films. The BHTLs are sequentially deposited via continuousvacuum evaporation (CVE). Benefiting from the quantum size effect,their bandgaps are precisely tuned to 2.6 and 2.06 eV, respectively.Such a design greatly mitigates interfacial energy level mismatchand forms a well-optimized stepwise band alignment between the Sb2S3 light-absorbing layer and the carbon electrode.Moreover, the integration of the PbS/PbSe layers significantly enhancesthe device’s surface morphology to ensure high-quality interfacecontact with the carbon electrode. The adoption of this dual HTL canalso effectively reduce the interface defect density of the devicefrom 1.9 × 1016 to 9.7 × 1015 cm–3, thereby suppressing nonradiative recombination.Ultimately, the solar cell with the FTO/TiO2/CdS/Sb2S3/PbS/PbSe/Carbon architecture has attained aremarkable power conversion efficiency (PCE) of 7.62%, which is therecord efficiency for carbon-based Sb2S3 solarcells. Notably, the device achieves an excellent PCE of 17.34% underindoor illumination of 1000 lx and exhibits outstanding stability.A series-connected module composed of 8 Sb2S3 cells delivers a high open-circuit voltage of 3.43 V under 1000lx, fully meeting the operating voltage requirements of commercialEM4325 RFID sensor tags.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"13 19","pages":"5948–5958"},"PeriodicalIF":6.0,"publicationDate":"2026-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149010041","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0