ACS Photonics最新文献

Multilayer Plasmonic Structure-Enhanced Near-Infrared CoSi2/Si Schottky Photodetector via Standard CMOS Process 基于标准CMOS工艺的多层等离子体结构增强近红外CoSi2/Si肖特基光电探测器

IF 7 1区物理与天体物理

ACS Photonics Pub Date : 2025-09-15 DOI: 10.1021/acsphotonics.5c00968

Wenbin Zhou, Xiangze Liu, Tiantian Shi, Zhangnan Li, Feng Yan, Haohao Zhou, Yiming Liao, Xiaoli Ji

{"title":"Multilayer Plasmonic Structure-Enhanced Near-Infrared CoSi2/Si Schottky Photodetector via Standard CMOS Process","authors":"Wenbin Zhou, Xiangze Liu, Tiantian Shi, Zhangnan Li, Feng Yan, Haohao Zhou, Yiming Liao, Xiaoli Ji","doi":"10.1021/acsphotonics.5c00968","DOIUrl":"https://doi.org/10.1021/acsphotonics.5c00968","url":null,"abstract":"Imaging sensing based on silicon optoelectronic chips faces significant challenges in extending the detection range to the near-infrared (NIR) band. In this paper, we demonstrate near-infrared CoSi2/Si Schottky diodes as photodetectors in the CMOS process. To enhance photoabsorption and broaden the spectral range for detection, the CoSi2/Si Schottky diode is integrated with a fishbone-shaped Al/W/CoSi2 multilayer structure, which provides a strong surface plasmon resonance (SPR) effect. Experimental results show that, under a bias voltage of −1 V and NIR irradiation, the device enables a maximum responsivity of 1.7 mA/W @ 1550 nm and 0.1 mA/W @ 2000 nm. The rise and fall times for a 1550 nm pulse source are 16.3 and 15.8 ms, respectively. Both photoelectric and photothermal responses are observed in photodetectors, with the photothermal effect contributing more significantly at longer wavelengths. The mechanisms of these two effects and the optimization directions for long-wavelength detection are discussed. This work overcomes the spectral limitations of conventional CMOS imaging sensors, providing a low-cost, scalable solution for high-performance NIR imaging applications.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"16 1","pages":""},"PeriodicalIF":7.0,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145059728","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

Negative Photoconductivity in Porous Boron Nitride Nanofibers: For High On/Off Ratio Thermally Assisted Conductivity Modulation Photodetectors 多孔氮化硼纳米纤维的负光导率：用于高开/关比热辅助电导调制光电探测器

IF 7 1区物理与天体物理

ACS Photonics Pub Date : 2025-09-11 DOI: 10.1021/acsphotonics.5c01414

Shuqiao Zhang, Jing Lin, Chun Li, Shaoru Shuang, Chao Yu, Chengchun Tang, Yang Huang

{"title":"Negative Photoconductivity in Porous Boron Nitride Nanofibers: For High On/Off Ratio Thermally Assisted Conductivity Modulation Photodetectors","authors":"Shuqiao Zhang, Jing Lin, Chun Li, Shaoru Shuang, Chao Yu, Chengchun Tang, Yang Huang","doi":"10.1021/acsphotonics.5c01414","DOIUrl":"https://doi.org/10.1021/acsphotonics.5c01414","url":null,"abstract":"This study demonstrates a high-performance thermally assisted conductivity modulation photodetector based on porous boron nitride nanofibers (BNNFs) exhibiting a unique negative photoconductivity (NPC) effect. Mechanism studies show that the NPC effect originates from the changes in conductivity generated by H2O adsorption/desorption. The large specific surface area, abundant microporous/mesoporous structures, and hydrophilic groups of the porous BNNFs can provide active sites for the adsorption of H2O molecules, which makes the photodetector have high conductivity in the dark. Under illumination, the laser-induced desorption of surface-bound H2O molecules leads to a decrease in the conductivity. Based on the above mechanism, the porous BNNF photodetector exhibits broadband photoresponse (405–808 nm) and high on/off ratio (5 orders of magnitude change under 85% RH), and it maintains stability under high-power tolerance (>1 W cm–2) due to the excellent thermal/chemical stability of porous BNNFs. Furthermore, the broadband photoresponse of the porous BNNF photodetector has been successfully applied to “NOR” and “NAND” optoelectronic logic gates. This NPC effect based on H2O molecule adsorption/desorption on porous BNNFs provides a new option for the development of nontraditional optoelectronic devices for advanced optical logic gates and high-power photodetection. This work uncovers the distinctive optoelectronic characteristics of porous BNNFs, demonstrating their enormous potential for applications in optoelectronic devices.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"33 1","pages":""},"PeriodicalIF":7.0,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145032254","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

Intrinsic Single-Mode Microlaser in the Telecom Band by Gain-Medium-Manipulation-Based Loss Engineering 基于增益-介质操纵损耗工程的电信频段内禀单模微激光器

IF 7 1区物理与天体物理

ACS Photonics Pub Date : 2025-09-10 DOI: 10.1021/acsphotonics.5c01498

Bo Jiang, Kang Xu, Wenyu Wang, Lei Shi, Xinliang Zhang

引用次数: 0

Enhancement of Free-Space Optical Communication with Structured Frequency Combs 利用结构频率梳增强自由空间光通信

IF 7 1区物理与天体物理

ACS Photonics Pub Date : 2025-09-10 DOI: 10.1021/acsphotonics.5c01671

Ziang Xiao, Yuhan Gong, Pengxiang Wang, Yixun Huang, Mian Wu, Lin Wu, Chao Yang, Bertrand Kibler, Arnaud Mussot, Jin Tao, Gang Xu

{"title":"Enhancement of Free-Space Optical Communication with Structured Frequency Combs","authors":"Ziang Xiao, Yuhan Gong, Pengxiang Wang, Yixun Huang, Mian Wu, Lin Wu, Chao Yang, Bertrand Kibler, Arnaud Mussot, Jin Tao, Gang Xu","doi":"10.1021/acsphotonics.5c01671","DOIUrl":"https://doi.org/10.1021/acsphotonics.5c01671","url":null,"abstract":"In recent years, optical frequency combs (OFCs) and structured light beams have demonstrated remarkable performance across various fields, namely sensing, metrology, and optical communications. To benefit the advantages of both techniques, we propose a novel approach for generating structured OFCs carrying designed transverse modes. More specifically, we shape the narrow line width laser source not only in the temporal domain but also in the spatial domain, so as to obtain an electro-optic frequency comb with customizable radial structures, including higher-order Bessel structures, Airy structures, and other designed modes. This versatile structured frequency comb source featuring high repetition rates, strong tunability, high output power, and an unprecedented degree of freedom exhibits high performance in free-space optical telecommunications. Along this line, we have experimentally assessed the bit error rates (BERs) of a 20 GBaud/s pulse amplitude modulation 4-level signal carried by different comb lines of the structured beam, even with a simulated turbulence communication environment. The experimental results indicate that the generated beam supports a communication capacity of up to 360 Gbit/s, while the 4-fold Bessel beam multicasting achieves a relatively low BER of less than 2.4 × 10–2. Compared with traditional OFCs and structured beams, the proposed scheme simultaneously enables wavelength-division multiplexing, turbulence-resistance, self-healing, and multicasting, thus tremendously enhancing free-space telecommunications for various scenarios.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"86 1","pages":""},"PeriodicalIF":7.0,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145026166","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

Unidirectional Coupling of Light to Surface Plasmons via Harnessing Local Eigenmodes with Opposite Symmetry 利用具有相反对称性的局部本征模实现光与表面等离激元的单向耦合

IF 7 1区物理与天体物理

ACS Photonics Pub Date : 2025-09-09 DOI: 10.1021/acsphotonics.5c01429

Songsong Li, Cong Wang, Feng Gao, Yu Chen, Lei Gao, Yangyang Fu, Yadong Xu

{"title":"Unidirectional Coupling of Light to Surface Plasmons via Harnessing Local Eigenmodes with Opposite Symmetry","authors":"Songsong Li, Cong Wang, Feng Gao, Yu Chen, Lei Gao, Yangyang Fu, Yadong Xu","doi":"10.1021/acsphotonics.5c01429","DOIUrl":"https://doi.org/10.1021/acsphotonics.5c01429","url":null,"abstract":"Achieving perfectly unidirectional surface plasmons in passive optical systems remains unattainable, primarily due to the fundamental challenges of simultaneously achieving momentum and impedance matching for dynamic waves at the interface. In this study, a novel approach is proposed to achieve efficient unidirectional coupling of light to surface plasmons by harnessing two local eigenmodes with opposite symmetry. This unidirectional coupling mechanism is demonstrated through the design and analysis of a compound metagrating that supports radiative guided resonance modes of even-symmetry and nonradiative modes in the form of bound states in the continuum with odd-symmetry. It is shown that the local resonances of these two opposite-symmetry eigenmodes significantly enhance the fundamental coupling process of local fields. Furthermore, their destructive interference can induce complete unidirectional excitation of surface plasmons with moderate efficiency. A theory for complete unidirectional coupling is developed, which is applicable to any dynamic wave system. This study offers a novel method for achieving unidirectional surface plasmon polaritons and holds potential applications in unidirectional light sources and on-chip one-way manipulation.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"46 1 1","pages":""},"PeriodicalIF":7.0,"publicationDate":"2025-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145026154","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

Augmenting Out-of-Depth Visibility with Planar Photonic Chips: A Step Toward Ultrahigh Depth-of-Field Applications 利用平面光子芯片增强深度外可视性：迈向超高景深应用的一步

IF 7 1区物理与天体物理

ACS Photonics Pub Date : 2025-09-08 DOI: 10.1021/acsphotonics.5c01040

Anting Gao, Xilong Liu, Yikai Chen

{"title":"Augmenting Out-of-Depth Visibility with Planar Photonic Chips: A Step Toward Ultrahigh Depth-of-Field Applications","authors":"Anting Gao, Xilong Liu, Yikai Chen","doi":"10.1021/acsphotonics.5c01040","DOIUrl":"https://doi.org/10.1021/acsphotonics.5c01040","url":null,"abstract":"Microscopic imaging suffers from a shallow depth-of-field (DoF), limiting its ability to capture clear images of thick samples or extended depth structures in a single frame. Here, a planar photonic chip based on an all-dielectric multilayer structure is presented, which significantly enhances out-of-focus imaging by modulating the optical transfer function. Through momentum space design, the chip achieves high-pass filtering at designated wavelengths while retaining essential low-frequency information. This approach enhances edge detection and contrast in both in-focus and out-of-focus images, reducing defocus interference and enabling wide-range depth imaging. We demonstrate its effectiveness in various applications, including automated pattern recognition, high-contrast imaging of thick biological samples, and intracellular cytoplasmic streaming observation. The chip’s ease of fabrication makes it a promising platform for real-time, large-scale data processing and integration into portable imaging systems. This work demonstrates the potential of planar photonic chips to augment out-of-depth visibility in optical imaging, offering new possibilities for applications in biology, materials science, and nanotechnology.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"68 1","pages":""},"PeriodicalIF":7.0,"publicationDate":"2025-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145009109","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

Unveiling Phonon-Mediated Depolarization Pathways of Interlayer Excitons in WSSe/WSe2 Heterostructures 揭示WSSe/WSe2异质结构中声子介导的层间激子退极化途径

IF 7 1区物理与天体物理

ACS Photonics Pub Date : 2025-09-05 DOI: 10.1021/acsphotonics.5c01035

Yaojie Zhu, Hui Ma, Ruixue Bai, Xilin Zhang, Yanbo Ren, Zuowei Yan, Xiaoshan Du, Rui Zhou, Chongyun Jiang

{"title":"Unveiling Phonon-Mediated Depolarization Pathways of Interlayer Excitons in WSSe/WSe2 Heterostructures","authors":"Yaojie Zhu, Hui Ma, Ruixue Bai, Xilin Zhang, Yanbo Ren, Zuowei Yan, Xiaoshan Du, Rui Zhou, Chongyun Jiang","doi":"10.1021/acsphotonics.5c01035","DOIUrl":"https://doi.org/10.1021/acsphotonics.5c01035","url":null,"abstract":"The electron–hole exchange interaction and phonon-induced spin relaxation are critical factors for the depolarization of the valley information in two-dimensional systems. As for the transition metal dichalcogenide (TMDC) ternary alloys, prominent phonon-mediated intervalley scattering is expected due to the piezo-effect and lattice deformation. In our work, we demonstrate the dissimilar lifetime of the valley depolarization and intervalley scattering of the interlayer excitons in the TMDC ternary-based vdWHSs, where the intervalley scattering time of ∼20 ns in the 1L-WSSe/1L-WSe2 vdWHS is significantly greater than the valley depolarization lifetime of ∼2 ns. Phonon-mediated pathways are crucial for intervalley scattering in the presence of a magnetic field. The intervalley scattering can be enhanced by interlayer hopping and suppressed by encapsulation. The encapsulation-suppressed intervalley scattering enables the exciton valley Hall effect in the presence of a pseudomagnetic field in the 1L-WS2/1L-WSSe/1L-WSe2 vdWHS. Our results provide deeper insights into the valley depolarization dynamics in TMDC ternary-based vdWHSs for developing valleytronic devices.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"304 1","pages":""},"PeriodicalIF":7.0,"publicationDate":"2025-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145007187","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

Neuromorphic Phototransistors with Built-in Heterojunction for Efficient and Accurate Adaptive Sensing 内置异质结的神经形态光电晶体管，用于高效准确的自适应传感

IF 7 1区物理与天体物理

ACS Photonics Pub Date : 2025-09-05 DOI: 10.1021/acsphotonics.5c01133

Zexi Lin, Wenxiao Zhao, Xing Lin, Liyan Zhang, Jiaqi Gao, Sheng Xu, Enguo Chen, Tailiang Guo, Yun Ye, Huipeng Chen

{"title":"Neuromorphic Phototransistors with Built-in Heterojunction for Efficient and Accurate Adaptive Sensing","authors":"Zexi Lin, Wenxiao Zhao, Xing Lin, Liyan Zhang, Jiaqi Gao, Sheng Xu, Enguo Chen, Tailiang Guo, Yun Ye, Huipeng Chen","doi":"10.1021/acsphotonics.5c01133","DOIUrl":"https://doi.org/10.1021/acsphotonics.5c01133","url":null,"abstract":"Neuromorphic vision systems have the capacity to simulate the perception and processing of visual information by visual cells in the retina. However, when confronted with the challenges posed by a substantial volume of complex data and complex environments, traditional neuromorphic vision systems are unable to handle redundant signals of overenhancement and suppression. These systems are required to face the considerable challenges posed by complicated circuits and algorithms. In this paper, we present an adaptive synaptic transistor with a built-in heterojunction that can switch between three modes of synaptic excitation-inhibition effect, excitation-adaptive, and inhibition-adaptive photoconductivity effect by utilizing light switching and wavelength change. The device can complete the entire adaptation process from excitation sensitization to self-adaptation to the initial current in 1 s, and from excitation sensitization to adaptation in 3.2 s. The adaptation speed is superior to that of the human eye (5 min). The combination of convolutional neural networks (CNNs) with adaptive synaptic transistors has yielded the development of an advanced neuromorphic vision system. This system exhibits fast self-adaptation and static image recognition and classification capabilities, with a recognition rate that exceeds 90%, thereby facilitating the advancement of next-generation neuromorphic vision systems.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"15 1","pages":""},"PeriodicalIF":7.0,"publicationDate":"2025-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145007186","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

Aliovalent Doping-Induced Enhancement of Self-Trapped Exciton Emission in Ruddlesden–Popper Perovskite 六价掺杂诱导的Ruddlesden-Popper钙钛矿自困激子发射增强

IF 7 1区物理与天体物理

ACS Photonics Pub Date : 2025-09-04 DOI: 10.1021/acsphotonics.5c01371

Tong Chang, Tongtong Kou, Qilin Wei, Xin Li, Xinxin Han, Liang Wang, Shiguo Han, William W. Yu

引用次数: 0

Label-Free Third-Harmonic Generation (THG) Imaging for Cerebellar Research: Layer-Specific Structural Imaging and Long-Term Pathological Tracking 小脑研究无标签三次谐波成像：层特异性结构成像和长期病理跟踪

IF 7 1区物理与天体物理

ACS Photonics Pub Date : 2025-09-03 DOI: 10.1021/acsphotonics.5c01095

Yuan Yu, Liang Zhu, Mengqi Wang, Peng Fu, Hequn Zhang, Bingcong Chu, Fen Yang, Xiaofeng Zhao, Zhiqing Zhang, Wang Xi

{"title":"Label-Free Third-Harmonic Generation (THG) Imaging for Cerebellar Research: Layer-Specific Structural Imaging and Long-Term Pathological Tracking","authors":"Yuan Yu, Liang Zhu, Mengqi Wang, Peng Fu, Hequn Zhang, Bingcong Chu, Fen Yang, Xiaofeng Zhao, Zhiqing Zhang, Wang Xi","doi":"10.1021/acsphotonics.5c01095","DOIUrl":"https://doi.org/10.1021/acsphotonics.5c01095","url":null,"abstract":"The cerebellum possesses a unique and delicate cytoarchitecture that is essential for motor coordination and cognitive processing. However, persistent technical limitations hinder precise, deep, and longitudinal in vivo imaging of the cerebellar structure and function by using endogenous signals. In this work, we present third-harmonic-generation (THG) imaging as a robust platform for long-term cerebellar observation. By employing low-power second near-infrared (NIR-II) 1300 nm excitation, we achieved real-time in vivo THG imaging of the mouse cerebellar gray matter, revealing its three-layer structure and histological morphology. Then, we combined the THG signal with fluorescence signal to identify the unique structure signals from erythrocytes and myelin sheath in different layers. Furthermore, we successfully longitudinally quantitatively monitored pathological progression in cuprizone-induced demyelination over 9 weeks and tracked postischemic recovery dynamics in photothrombosis models. In summary, our work affirms that the THG signal could demonstrate the physiological and pathological changes of regional cerebellar structures, a finding which provides a potential longitudinal tracking and label-free in vivo means for exploring the mechanism of cerebellar development and disease in three layers and white matter (WM) within the deep region.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"71 1","pages":""},"PeriodicalIF":7.0,"publicationDate":"2025-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144931079","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