Pub Date : 2026-01-12DOI: 10.1038/s41566-025-01825-8
Wenhao Wang, Yi Ji Tan, Pascal Szriftgiser, Guillaume Ducournau, Ranjan Singh
The rise of topological valley photonics heralds a new era in photonic integrated circuits featuring low-loss, compact designs with robust light transport through sharp corners. However, most demonstrations of valley photonic devices only focus on the robust waveguiding of light with suppressed radiation leakage. Here we harness the conical radiation of leaky valley photonic crystals to demonstrate a topological leaky-wave antenna (LWA) that unifies leaky and guided topological edge states on a single silicon chip. We demonstrate a wide-range beam scanning of 120° in the polar angle with a maximum gain of 15 dBi using a single-branch topological LWA. In addition, the 3-branch LWA enables beam scanning over 75% of the entire three-dimensional solid-angle space. We further demonstrate frequency-division demultiplexing of 3 terahertz wireless links, each radiating 120° apart to collectively deliver high-gain omnidirectional full-space coverage, achieving an aggregate data rate of 72 Gbps. Furthermore, we demonstrate bidirectional dual-channel terahertz wireless links, where the time-reversal-symmetric topological LWA simultaneously receives a real-time high-definition video stream and transmits on-chip signals into free space at a data rate of 24 Gbps. Our on-chip leaky topological antennas provide a versatile platform for the next generation 6G and beyond (XG) cellular networks, imaging, terahertz Wi-Fi (TeraFi), and terahertz detection and ranging (TeDAR).
{"title":"On-chip topological leaky-wave antenna for full-space terahertz wireless connectivity","authors":"Wenhao Wang, Yi Ji Tan, Pascal Szriftgiser, Guillaume Ducournau, Ranjan Singh","doi":"10.1038/s41566-025-01825-8","DOIUrl":"https://doi.org/10.1038/s41566-025-01825-8","url":null,"abstract":"The rise of topological valley photonics heralds a new era in photonic integrated circuits featuring low-loss, compact designs with robust light transport through sharp corners. However, most demonstrations of valley photonic devices only focus on the robust waveguiding of light with suppressed radiation leakage. Here we harness the conical radiation of leaky valley photonic crystals to demonstrate a topological leaky-wave antenna (LWA) that unifies leaky and guided topological edge states on a single silicon chip. We demonstrate a wide-range beam scanning of 120° in the polar angle with a maximum gain of 15 dBi using a single-branch topological LWA. In addition, the 3-branch LWA enables beam scanning over 75% of the entire three-dimensional solid-angle space. We further demonstrate frequency-division demultiplexing of 3 terahertz wireless links, each radiating 120° apart to collectively deliver high-gain omnidirectional full-space coverage, achieving an aggregate data rate of 72 Gbps. Furthermore, we demonstrate bidirectional dual-channel terahertz wireless links, where the time-reversal-symmetric topological LWA simultaneously receives a real-time high-definition video stream and transmits on-chip signals into free space at a data rate of 24 Gbps. Our on-chip leaky topological antennas provide a versatile platform for the next generation 6G and beyond (XG) cellular networks, imaging, terahertz Wi-Fi (TeraFi), and terahertz detection and ranging (TeDAR).","PeriodicalId":18926,"journal":{"name":"Nature Photonics","volume":"124 1","pages":""},"PeriodicalIF":35.0,"publicationDate":"2026-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145956348","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}
Pub Date : 2026-01-09DOI: 10.1038/s41566-025-01823-w
Francesco Gucci, Eduardo B. Molinero, Mattia Russo, Pablo San-Jose, Franco V. A. Camargo, Margherita Maiuri, Misha Ivanov, Álvaro Jiménez-Galán, Rui E. F. Silva, Stefano Dal Conte, Giulio Cerullo
{"title":"Encoding and manipulating ultrafast coherent valleytronic information with lightwaves","authors":"Francesco Gucci, Eduardo B. Molinero, Mattia Russo, Pablo San-Jose, Franco V. A. Camargo, Margherita Maiuri, Misha Ivanov, Álvaro Jiménez-Galán, Rui E. F. Silva, Stefano Dal Conte, Giulio Cerullo","doi":"10.1038/s41566-025-01823-w","DOIUrl":"https://doi.org/10.1038/s41566-025-01823-w","url":null,"abstract":"","PeriodicalId":18926,"journal":{"name":"Nature Photonics","volume":"35 1","pages":""},"PeriodicalIF":35.0,"publicationDate":"2026-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145938251","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}
Pub Date : 2026-01-08DOI: 10.1038/s41566-025-01810-1
Dongdong Zhang, Hengyi Dai, Hai Zhang, Lian Duan
As a revolutionary display technology, organic light-emitting diodes (OLEDs) have achieved remarkable technological progress and commercial success in recent years. However, despite years of intensive research, high-efficiency deep-blue OLEDs with a long device lifetime remain elusive. Sensitized fluorescence, in which phosphorescence or thermally activated delayed fluorescence sensitizers are combined with narrowband fluorophores as terminal emitters, has emerged as a promising solution. This synergistic strategy holds great potential for thermodynamically and kinetically stabilizing deep-blue devices, alongside realizing unity exciton utilization efficiency and narrowband electroluminescence. Here we highlight recent advancements in the molecular design of sensitizers and narrowband emitters, as well as the optimization of their combination, for applications in deep-blue sensitized fluorescent devices. We also identify key challenges and outline pathways for the future commercialization of highly efficient and stable blue OLEDs that go beyond conventional fluorescence. This Review discusses recent advances in sensitized fluorescence emitters for deep-blue organic light-emitting diodes, reviewing progress in molecular design and device performance as well as key remaining challenges.
{"title":"Stable deep-blue organic light-emitting diodes based on sensitized fluorescence","authors":"Dongdong Zhang, Hengyi Dai, Hai Zhang, Lian Duan","doi":"10.1038/s41566-025-01810-1","DOIUrl":"10.1038/s41566-025-01810-1","url":null,"abstract":"As a revolutionary display technology, organic light-emitting diodes (OLEDs) have achieved remarkable technological progress and commercial success in recent years. However, despite years of intensive research, high-efficiency deep-blue OLEDs with a long device lifetime remain elusive. Sensitized fluorescence, in which phosphorescence or thermally activated delayed fluorescence sensitizers are combined with narrowband fluorophores as terminal emitters, has emerged as a promising solution. This synergistic strategy holds great potential for thermodynamically and kinetically stabilizing deep-blue devices, alongside realizing unity exciton utilization efficiency and narrowband electroluminescence. Here we highlight recent advancements in the molecular design of sensitizers and narrowband emitters, as well as the optimization of their combination, for applications in deep-blue sensitized fluorescent devices. We also identify key challenges and outline pathways for the future commercialization of highly efficient and stable blue OLEDs that go beyond conventional fluorescence. This Review discusses recent advances in sensitized fluorescence emitters for deep-blue organic light-emitting diodes, reviewing progress in molecular design and device performance as well as key remaining challenges.","PeriodicalId":18926,"journal":{"name":"Nature Photonics","volume":"20 2","pages":"136-150"},"PeriodicalIF":32.9,"publicationDate":"2026-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145937553","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}
Autonomous colour correction embedded into an individual pixel is crucial to create next-generation intelligent visual systems. Although existing feedback circuits enable robust ex situ colour correction, they remain bulky with logic complexity. Here we propose in-pixel colour correction by integrating three panchromatic organic active adaptation transistors as a single pixel, each featuring two complementary broadband bulk heterojunctions. The devices display an active adaptation index, that is, a change in photosensitivity as a function of orders of magnitude changes in luminance, of over 150 to red, green and blue light stimuli. More importantly, the subpixels adapt following the von Kries coefficient law, thereby mimicking the ability of a human visual system to adjust to changes in illumination and preserve the appearance of colours. Our proof-of-concept device array, under distorted light conditions, achieves a recognition accuracy of >96.3% in a convolutional neural network simulation. These results represent a key step for constructing a new generation of smart visual systems with in-sensor functionalities. A colour correction array featuring red-, green- and blue-sensitive organic transistors integrated within a single pixel enables self-adaptive intensity and colour correction.
{"title":"In-pixel colour correction with organic self-adaptive transistors","authors":"Zihan He, Wei Wang, Zepang Zhan, Lingxuan Jia, Yutao Ge, Zitong Zhan, Peiyao Xue, Weijie Wang, Lanyi Xiang, Yingqiao Ma, Yawen Li, Zhiyi Li, Xiaojuan Dai, Dekai Ye, Liyao Liu, Fengjiao Zhang, Ye Zou, Yuze Lin, Xiaowei Zhan, Daoben Zhu, Chong-an Di","doi":"10.1038/s41566-025-01812-z","DOIUrl":"10.1038/s41566-025-01812-z","url":null,"abstract":"Autonomous colour correction embedded into an individual pixel is crucial to create next-generation intelligent visual systems. Although existing feedback circuits enable robust ex situ colour correction, they remain bulky with logic complexity. Here we propose in-pixel colour correction by integrating three panchromatic organic active adaptation transistors as a single pixel, each featuring two complementary broadband bulk heterojunctions. The devices display an active adaptation index, that is, a change in photosensitivity as a function of orders of magnitude changes in luminance, of over 150 to red, green and blue light stimuli. More importantly, the subpixels adapt following the von Kries coefficient law, thereby mimicking the ability of a human visual system to adjust to changes in illumination and preserve the appearance of colours. Our proof-of-concept device array, under distorted light conditions, achieves a recognition accuracy of >96.3% in a convolutional neural network simulation. These results represent a key step for constructing a new generation of smart visual systems with in-sensor functionalities. A colour correction array featuring red-, green- and blue-sensitive organic transistors integrated within a single pixel enables self-adaptive intensity and colour correction.","PeriodicalId":18926,"journal":{"name":"Nature Photonics","volume":"20 2","pages":"194-201"},"PeriodicalIF":32.9,"publicationDate":"2026-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145908124","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}
Pub Date : 2026-01-06DOI: 10.1038/s41566-025-01809-8
Seong Sik Shin, Byung-wook Park, Jun Hong Noh, Sang Il Seok
Interlayers (ILs) play a pivotal role in perovskite solar cells, enabling efficient charge extraction, suppressing recombination and enhancing device stability. Positioned between the light-absorbing perovskite layer and the electrodes, ILs facilitate selective carrier transport while mitigating interfacial losses. Unlike GaAs cells and heterojunction with intrinsic thin layer silicon cells, which benefit from coherent, chemically compatible interfaces, perovskite solar cells exhibit structural and energetic mismatches at the interfaces between the perovskite and charge transport layers (CTLs). To address these challenges, functional interfacial ILs are introduced at both the CTL/perovskite and CTL/electrode interfaces. This Review examines the evolution of these ILs, from simple passivation layers to multifunctional components that regulate electric fields and carrier dynamics. We highlight recent advances in materials and architectures, classify ILs by their device position and discuss design strategies inspired by mature photovoltaic technologies. We argue that interfacial IL engineering is crucial to radiative efficiency and stable, high-performance perovskite solar cells. This Review discusses recent advances in interlayer engineering for perovskite solar cells, highlighting promising materials and architectures that could improve the stability and efficiency of devices.
{"title":"Interlayer engineering in metal halide perovskite photovoltaics","authors":"Seong Sik Shin, Byung-wook Park, Jun Hong Noh, Sang Il Seok","doi":"10.1038/s41566-025-01809-8","DOIUrl":"10.1038/s41566-025-01809-8","url":null,"abstract":"Interlayers (ILs) play a pivotal role in perovskite solar cells, enabling efficient charge extraction, suppressing recombination and enhancing device stability. Positioned between the light-absorbing perovskite layer and the electrodes, ILs facilitate selective carrier transport while mitigating interfacial losses. Unlike GaAs cells and heterojunction with intrinsic thin layer silicon cells, which benefit from coherent, chemically compatible interfaces, perovskite solar cells exhibit structural and energetic mismatches at the interfaces between the perovskite and charge transport layers (CTLs). To address these challenges, functional interfacial ILs are introduced at both the CTL/perovskite and CTL/electrode interfaces. This Review examines the evolution of these ILs, from simple passivation layers to multifunctional components that regulate electric fields and carrier dynamics. We highlight recent advances in materials and architectures, classify ILs by their device position and discuss design strategies inspired by mature photovoltaic technologies. We argue that interfacial IL engineering is crucial to radiative efficiency and stable, high-performance perovskite solar cells. This Review discusses recent advances in interlayer engineering for perovskite solar cells, highlighting promising materials and architectures that could improve the stability and efficiency of devices.","PeriodicalId":18926,"journal":{"name":"Nature Photonics","volume":"20 1","pages":"11-23"},"PeriodicalIF":32.9,"publicationDate":"2026-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145903753","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}
Pub Date : 2026-01-06DOI: 10.1038/s41566-025-01829-4
Keigo Kawase, Goro Isoyama
Modulating an electron beam with a frequency-beating laser enables a free-electron laser to generate high-power, narrowband terahertz pulses that can be continuously tuned from 7.8 to 30.8 terahertz.
{"title":"Electron shaping for continuous terahertz coverage","authors":"Keigo Kawase, Goro Isoyama","doi":"10.1038/s41566-025-01829-4","DOIUrl":"10.1038/s41566-025-01829-4","url":null,"abstract":"Modulating an electron beam with a frequency-beating laser enables a free-electron laser to generate high-power, narrowband terahertz pulses that can be continuously tuned from 7.8 to 30.8 terahertz.","PeriodicalId":18926,"journal":{"name":"Nature Photonics","volume":"20 1","pages":"1-2"},"PeriodicalIF":32.9,"publicationDate":"2026-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145903752","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}
Pub Date : 2026-01-06DOI: 10.1038/s41566-025-01828-5
Carlos A. Ríos Ocampo, Nathan Youngblood
Optical computing has been limited to vector–matrix multiplications, with matrix–matrix operations requiring wavelength- or time-division multiplexing, reducing energy efficiency and speed. Now, researchers have demonstrated a free-space optical approach that overcomes these limitations, enabling parallel matrix–matrix and tensor–matrix multiplications in a single optical operation.
{"title":"Multiplying matrices in a single pass with light","authors":"Carlos A. Ríos Ocampo, Nathan Youngblood","doi":"10.1038/s41566-025-01828-5","DOIUrl":"10.1038/s41566-025-01828-5","url":null,"abstract":"Optical computing has been limited to vector–matrix multiplications, with matrix–matrix operations requiring wavelength- or time-division multiplexing, reducing energy efficiency and speed. Now, researchers have demonstrated a free-space optical approach that overcomes these limitations, enabling parallel matrix–matrix and tensor–matrix multiplications in a single optical operation.","PeriodicalId":18926,"journal":{"name":"Nature Photonics","volume":"20 1","pages":"3-4"},"PeriodicalIF":32.9,"publicationDate":"2026-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145903762","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}
Pub Date : 2025-12-22DOI: 10.1038/s41566-025-01821-y
Giampaolo Pitruzzello
From super-resolution endoscopes to multi-photon microscopes, photonic technologies are being translated from laboratory innovations to tools for clinical diagnosis and biological inquiry.
从超分辨率内窥镜到多光子显微镜，光子技术正在从实验室创新转化为临床诊断和生物学研究的工具。
{"title":"Photonics looks deeper into biology","authors":"Giampaolo Pitruzzello","doi":"10.1038/s41566-025-01821-y","DOIUrl":"10.1038/s41566-025-01821-y","url":null,"abstract":"From super-resolution endoscopes to multi-photon microscopes, photonic technologies are being translated from laboratory innovations to tools for clinical diagnosis and biological inquiry.","PeriodicalId":18926,"journal":{"name":"Nature Photonics","volume":"20 1","pages":"8-10"},"PeriodicalIF":32.9,"publicationDate":"2025-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145905281","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：