{"title":"Ultra-Low Efficiency Roll-Off High Color Purity Blue Perovskite Quantum Dot LEDs with Exceeding 20% Efficiency","authors":"Mingyuan Xie, Chenghao Bi, Shibo Wei, Zhentao Jiang, Guo Li, Hangren Li, Yong Zhang, Feng Zhao, Meng-Jiao Li, Hui Lin, Ya-Kun Wang, Liang-Sheng Liao, Silu Tao","doi":"10.1038/s41377-026-02231-7","DOIUrl":"https://doi.org/10.1038/s41377-026-02231-7","url":null,"abstract":"Blue perovskite quantum dot light-emitting diodes (QLEDs) are highly attractive for new generation high-definition displays, but their practical deployment is hindered by severe efficiency roll-off at high brightness (>4000 cd m−²) while maintaining high color purity (CIEy < 0.1). This roll-off arises mainly from non-radiative losses induced by exposed dangling bonds, strong inter-dot coupling, and low permittivity. To conquer this challenge, we develop a multifunctional molecule passivation strategy utilizing 1-ethyl-3-methylimidazolium hexafluorophosphate (EMIMPF₆). The [PF₆]− anions coordinate with lead dangling bonds, cesium sites, and weaken coupling, while [EMIM]⁺ cations suppress bromine-related defects and inhibit Auger recombination, collectively reducing exciton quenching pathways. This treatment increases the photoluminescence quantum yield of QD films from 78% to 92% and enables spectrally high color purity blue emission at 472 nm (CIEy = 0.091). Crucially, the resulting devices deliver a record-high external quantum efficiency (EQE) exceeding 20% at 6441 cd m−² and maintain 18.47% EQE at 9587 cd m−² with nearly eliminated roll-off, representing the best performance to date for blue perovskite QLEDs (CIEy < 0.1). Moreover, the operational lifetime improves by an order of magnitude compared with previous reports.","PeriodicalId":18069,"journal":{"name":"Light-Science & Applications","volume":"37 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2026-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147465582","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Integrated optomechanical ultrasonic sensors with nano-Pascal-level sensitivity","authors":"Xuening Cao, Hao Yang, Min Wang, Zhi-Gang Hu, Zu-Lei Wu, Yuanlei Wang, Jian-Fei Liu, Xin Zhou, Jincheng Li, Chenghao Lao, Qi-Fan Yang, Bei-Bei Li","doi":"10.1038/s41377-026-02238-0","DOIUrl":"https://doi.org/10.1038/s41377-026-02238-0","url":null,"abstract":"Ultrasonic sensors are widely used for object detection and localization in underwater and biological settings. The operational range and spatial resolution are inherently limited by sensor sensitivity, in which conventional piezoelectric transducers have been overwhelmed by advanced photonic sensors. Here, we demonstrate an optomechanical ultrasonic sensor integrated into a photonic platform, which comprises a suspended SiO2 membrane embedded with a high-Q Si3N4 microring resonator. By exploiting simultaneous optical and mechanical resonances, the sensor achieves a record low noise-equivalent pressure (NEP) of 218 nPa Hz−1/2 at 289 kHz in air and 9.6 nPa Hz−1/2 at 52 kHz in water. We demonstrate its versatility through photoacoustic gas spectroscopy in air and underwater ultrasound imaging, achieving a minimum detectable C2H2 concentration of 2.9 ppm (integration time 1 s) and an imaging resolution of 1.89 mm, respectively. Our work represents a significant advancement in compact CMOS-compatible ultrasound sensing, unlocking new possibilities in biomedical imaging, environmental monitoring, industrial testing, and underwater communications.","PeriodicalId":18069,"journal":{"name":"Light-Science & Applications","volume":"33 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2026-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147465524","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Single-shot, reference-less computational wavefront sensing for complex optical fields","authors":"Yunhui Gao, Liangcai Cao, Din Ping Tsai","doi":"10.1038/s41377-026-02241-5","DOIUrl":"https://doi.org/10.1038/s41377-026-02241-5","url":null,"abstract":"Optical waves carry rich information in their spatial profiles and topological structures. Characterization of optical wavefronts is a key prerequisite in broad applications across fundamental research and industrial technologies. However, existing wavefront sensing techniques typically compromise between spatiotemporal resolution, compactness, and versatility. Here, we present Spatial And Fourier-domAin Regularized Inversion (SAFARI), a computational wavefront sensing approach that exploits the intrinsic physical properties such as smoothness to enable reliable reconstruction of complex wavefronts from a single exposure. Using a compact, diffuser-based wavefront sensor, we experimentally demonstrate single-shot, reference-less characterization of diverse complex wavefronts, including aberrations with up to 200 Zernike modes, structured beams carrying a topological charge of 150, and speckle fields containing more than 190,000 spatial modes. The proposed wavefront sensor offers high versatility while achieving performance comparable to or surpassing state-of-the-art task-specific solutions, making it a promising tool for coherent imaging and sensing at unprecedented resolution and complexity.","PeriodicalId":18069,"journal":{"name":"Light-Science & Applications","volume":"11 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2026-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147465577","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Quan Sheng,Jing-Ni Geng,Jia-Qi Jiang,Tian-Chang Liu,David James Spence,Helen Margaret Pask,Allam Srinivasa Rao,Takashige Omatsu,Shi-Jie Fu,Zhen-Xu Bai,Zhi-Wei Lv,Wei Shi,Jian-Quan Yao,Carmelo Rosales-Guzmán,Zhi-Han Zhu
{"title":"Tunable structured laser over full spatial spectrum.","authors":"Quan Sheng,Jing-Ni Geng,Jia-Qi Jiang,Tian-Chang Liu,David James Spence,Helen Margaret Pask,Allam Srinivasa Rao,Takashige Omatsu,Shi-Jie Fu,Zhen-Xu Bai,Zhi-Wei Lv,Wei Shi,Jian-Quan Yao,Carmelo Rosales-Guzmán,Zhi-Han Zhu","doi":"10.1038/s41377-026-02243-3","DOIUrl":"https://doi.org/10.1038/s41377-026-02243-3","url":null,"abstract":"Modern tunable lasers are indispensable instruments in fundamental science and optical frequency applications. With the growing interest in structured light, there's a need for tunable structured lasers with high transverse electromagnetic (TEM) modal purity across a broad spatial spectrum, but no commercial solutions exist. Here, we present the first tunable structured laser that can emit all possible single TEM modes with extremely high purity over a wide range. This is achieved by the collaborative use of intracavity pump geometry and astigmatic detuning to selectively gain a desired mode while blockading others. Our astigmatic oscillator can tunably generate any TEM mode within the spatial bandwidth, achieving over 40,000 orthogonal Hermite-Gauss modes in the experiment, and each can be further expanded into numerous Hermite-Laguerre-Gauss modes via unitary transformation. This approach does not require extra intracavity beam shaping components, offering a promising design for commercially available structured lasers with full spatial spectrum tunability.","PeriodicalId":18069,"journal":{"name":"Light-Science & Applications","volume":"57 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2026-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147439373","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Continuous polarization-wavelength mapping with nonlocal metasurfaces.","authors":"Jiuxu Wang,Jie Wang,Feilong Yu,Jin Chen,Rongsheng Chen,Tianxiong Geng,Rong Jin,Yiran Zhou,Tongwen Zheng,Guanhai Li,Xiaoshuang Chen,Wei Lu","doi":"10.1038/s41377-026-02233-5","DOIUrl":"https://doi.org/10.1038/s41377-026-02233-5","url":null,"abstract":"Simultaneous and continuous control over polarization and wavelength-two orthogonal and information-rich degrees of freedom-remains a central challenge in metasurface photonics, long hindered by intrinsic dispersion constraints and structural degeneracy. Here, we customize continuous polarization-wavelength mapping through a nonlocal metasurface platform that decouples birefringent evolution from structural dispersion. We achieve programmable, spectrally resolved polarization shaping across the broadband mid-infrared regime by introducing an equivalent nonlocal Jones matrix formalism and a dimension-interlaced vectorial diffraction neural network. This framework enables fully continuous and arbitrarily prescribed mapping across the joint polarization-wavelength space-beyond the capabilities of segmented or interleaved metasurface designs. We experimentally demonstrate non-degenerate multicolor vectorial holography, broadband achromatic imaging, and arbitrary elliptical polarization multiplexing with high fidelity and minimal crosstalk, maintaining strong channel isolation. Our results establish a scalable route toward continuous-domain photonic encoding, offering a powerful foundation for ultracompact optical communication, vectorial information encryption, and high-dimensional light-field processing.","PeriodicalId":18069,"journal":{"name":"Light-Science & Applications","volume":"26 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2026-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147439371","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Kieran Hymas,Jack B Muir,Daniel Tibben,Joel van Embden,Tadahiko Hirai,Christopher J Dunn,Daniel E Gómez,James A Hutchison,Trevor A Smith,James Q Quach
{"title":"Superextensive electrical power from a quantum battery.","authors":"Kieran Hymas,Jack B Muir,Daniel Tibben,Joel van Embden,Tadahiko Hirai,Christopher J Dunn,Daniel E Gómez,James A Hutchison,Trevor A Smith,James Q Quach","doi":"10.1038/s41377-026-02240-6","DOIUrl":"https://doi.org/10.1038/s41377-026-02240-6","url":null,"abstract":"Superextensivity, where the response of a physical system scales super-linearly with size, originates from collective quantum effects and provides a promising route to augment next-generation quantum technologies. While recent work has demonstrated superextensive behaviour in the coherent dynamics of quantum systems, these effects typically occur on short timescales, prohibiting their practical utility. In contrast, triggering steady-state superextensive effects in, for example, a generated electric current, remains unexplored despite the immediate impact on photovoltaic technologies. Here, we utilise a microcavity quantum battery as an experimental platform that superextensively captures light energy and converts it to an electric current via the incorporation of charge transport layers into the resonant microcavity. This architecture enables, for the first time, a complete quantum battery charge-discharge cycle. We demonstrate that strong light-matter coupling induced by the microcavity leads to superextensive scaling of the steady-state electrical discharging power under low-intensity, incoherent illumination. Our results provide the first experimental demonstration of superextensive light-to-charge conversion in steady-state, highlighting the feasibility of leveraging strong light-matter coupling for enhanced energy harvesting under low-light conditions.","PeriodicalId":18069,"journal":{"name":"Light-Science & Applications","volume":"234 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2026-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147439370","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Kang Li, Guofeng Yan, Kangrui Wang, Chengkun Cai, Min Yang, Guangze Wu, Weike Zhao, Yingying Peng, Yaocheng Shi, Daoxin Dai, Jian Wang
{"title":"Harnessing diverse hybrid integration for bridging trans-scale multi-dimensional fiber-chip data transmission and processing","authors":"Kang Li, Guofeng Yan, Kangrui Wang, Chengkun Cai, Min Yang, Guangze Wu, Weike Zhao, Yingying Peng, Yaocheng Shi, Daoxin Dai, Jian Wang","doi":"10.1038/s41377-026-02194-9","DOIUrl":"https://doi.org/10.1038/s41377-026-02194-9","url":null,"abstract":"Optical communications have emerged as a promising solution for high-speed modern communication systems and built an important infrastructure for the global information superhighway. Although recent efforts to enhance optical communications have penetrated from long-distance fiber-optic to ultra-short-reach chip-scale data transmission, “Trans-Scale” high-capacity data transmission remains great challenges. In addition to data transmission, data processing is also of great importance for flexible data management in optical communication systems. However, a “Digital Divide” (capacity gap) exists between high-capacity data transmission in fiber links and low-speed data processing at network nodes, hindering the flourishing development of optical communications. Here, we implement “Trans-Scale” high-capacity bridging between few-mode fiber and silicon multimode waveguide using a diverse hybrid integrated coupler, which includes a 3D silica fs-laser direct writing photonic chip and a 2D silicon photonic integrated circuit. On this basis, we leverage a large-scale silicon reconfigurable optical add-drop multiplexer (ROADM) with over 2000 elements to construct a multi-dimensional fiber-chip system, enabling 192-channel (3 modes, 2 polarizations, 32 wavelengths) and 20-Tbit/s trans-scale multi-dimensional data transmission and processing. This demonstration provides a superior trans-scale architecture for multi-dimensional data transmission and processing in next-generation optical communications.","PeriodicalId":18069,"journal":{"name":"Light-Science & Applications","volume":"196 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2026-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147394036","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Qing-Xin Ji, Hanfei Hou, Jinhao Ge, Yan Yu, Maodong Gao, Warren Jin, Joel Guo, Lue Wu, Peng Liu, Avi Feshali, Mario Paniccia, John Bowers, Kerry Vahala
{"title":"Multicolor interband solitons in microcombs","authors":"Qing-Xin Ji, Hanfei Hou, Jinhao Ge, Yan Yu, Maodong Gao, Warren Jin, Joel Guo, Lue Wu, Peng Liu, Avi Feshali, Mario Paniccia, John Bowers, Kerry Vahala","doi":"10.1038/s41377-026-02200-0","DOIUrl":"https://doi.org/10.1038/s41377-026-02200-0","url":null,"abstract":"In microcombs, solitons can drive non-soliton-forming modes to induce optical gain. Under specific conditions, a regenerative secondary temporal pulse coinciding in time and space with the exciting soliton pulse will form at a new spectral location. A mechanism involving Kerr-induced pulse interactions has been proposed theoretically, leading to multicolor solitons containing constituent phase-locked pulses. However, the occurrence of this phenomenon requires dispersion conditions that are not naturally satisfied in conventional optical microresonators. Here, we report the experimental observation of multicolor pulses from a single optical pump in a way that is closely related to the concept of multicolor solitons. The individual soliton pulses share the same repetition rate and could potentially be fully phase-locked. They are generated using interband coupling in a compound resonator.","PeriodicalId":18069,"journal":{"name":"Light-Science & Applications","volume":"30 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2026-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147394086","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Ultraprecision, high-capacity, and wide-gamut structural colors enabled by a mixture probability sampling network.","authors":"Zeyong Wei,Weijie Xu,Siyu Dong,Xiaojia Liang,Jingyuan Zhu,Hui Zhang,Kaixuan Li,Lei Jin,Zhanshan Wang,Yuzhi Shi,Gang Yan,Cheng-Wei Qiu,Xinbin Cheng","doi":"10.1038/s41377-025-02122-3","DOIUrl":"https://doi.org/10.1038/s41377-025-02122-3","url":null,"abstract":"The advancement of nanophotonic devices is significantly dependent on achieving high-precision inverse design capabilities, which are critical for identifying optimal structural configurations that enable enhanced and multifunctional performances. The process of inverse design confronts a one-to-many relationship due to the complex mapping between optical performance and structure. Though several approaches, including tandem networks, mixture density networks (MDN), and conditional generative adversarial networks, have shown promising outcomes, they still face accuracy limitations when confronted with structures with higher degrees of freedom. Here, we propose a sampling-enhanced MDN called a mixture probability sampling network (MPSN), that outputs mixture Gaussian distributions (MGDs) of structural parameters through an end-to-end framework. The results of multiple samples drawn from the MGDs are fed into a pre-trained network, and the sample that minimizes the error relative to the real data is selected for network training. We benchmark the high performance in nanophotonics through the structural color design, achieving a high precision of up to 99.9% and a mean absolute error of less than 0.002. This work paves the way for resolving intricate inverse design problems in nanophotonics.","PeriodicalId":18069,"journal":{"name":"Light-Science & Applications","volume":"10 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2026-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147383549","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"In-situ formation of oriented perovskite nanosheets with tailored optical dipoles enabling >30% EQE in pure-red LEDs.","authors":"Shaowei Liu,Dezhong Zhang,Lei Wang,Binhe Li,Wei Yuan,Ziheng Xiong,Kai Chen,Helong Zhu,Wenping Wu,Shuang Li,Liu Yang,Yunzhuo Liu,Hongmei Zhan,Chuanli Qin,Jiaqi Zhang,Jun Liu,Lixiang Wang,Chuanjiang Qin","doi":"10.1038/s41377-026-02184-x","DOIUrl":"https://doi.org/10.1038/s41377-026-02184-x","url":null,"abstract":"The integration of crystallographic control into solution-processed perovskite films remains a challenge for efficient light emission, as disordered optical dipoles fundamentally limit photon extraction, a bottleneck constraining both classical and quantum planar optoelectronic devices. Here, we address this by developing an in situ formation strategy for oriented quasi-2D perovskite nanosheets within films via ligand-engineered crystallization. By designing and orchestrating steric hindrance and π-π interactions of ligands, we direct the crystallization kinetics to yield regular face-on nanosheets exhibiting enhanced horizontal transition dipole moment orientation compared to conventional isotropic films. The in situ architectural control also elevates both the photoluminescence quantum yield beyond 90% and carrier mobility comparable to 3D perovskite levels. These synergies enable perovskite light-emitting diodes (PeLEDs) with an external quantum efficiency (EQE) of 31.2% for pure-red emission at 635 nm, comparing favorably to other pure-red PeLEDs. Concurrently, the peak luminance and operational stability of the in situ nanosheet PeLEDs exhibit significant improvements.","PeriodicalId":18069,"journal":{"name":"Light-Science & Applications","volume":"67 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2026-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147383550","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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