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Two-dimensional(n = 1) ferroelectric film solar cells

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National Science Review 2023年第7期10卷 142-150页

作者： Chen Wang Jiahao Gu Jun Li Jianyu Cai Lutao Li Junjie Yao Zheng Lu Xiaohan Wang Guifu Zou College of Energy Soochow Institute for Energy and Materials Innovations and Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province Soochow University College of Mechanical and Electronic Engineering Shandong University of Science and Technology

Molecular ferroele ctrics that have excellent ferroelectric properties,a low processing temperature,narrow bandgap,and which are lightweight,have shown great potential in the photovoltaic ***,two-dimensional(2D) perovskite solar cells with high tunability,excellent photo-physical properties and superior long-term stability are limited by poor out-of-plane conductivity from intrinsic multi-quantum-well electronic *** work uses 2D molecular ferroelectric film as the absorbing layer to break the limit of multiple quantum *** 2D ferroelectric solar cells achieve the highest open-circuit voltage(1.29 V) and the best efficiency(3.71%) among the 2D(n=1) Ruddlesden-Popper perovskite solar cells due to the enhanced out-of-plane charge transport induced by molecular ferroelectrics with a strong saturation polarization,high Curie temperature and multiaxial *** work aims to break the inefficient out-of-plane charge transport caused by the limit of the multi-quantum-well electronic structure and improve the efficiency of 2D ferroelectric solar cells.

关键词： molecular ferroelectric film 2D perovskite ferroelectric film multiaxial ferroelectrics out-of-plane charge transport solar cell

Vector mode based optical direct detection orthogonal frequency division multiplexing transmission in short-reach optical link

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Frontiers of Optoelectronics 2019年第1期12卷 41-51页

作者： Jianping LI Zhaohui LI Guangdong Provincial key laboratory of optical fiber sensing and Communications Institute of Photonics TechnologyJinan UniversityGuangzhou 510632China State key laboratory of Optoelectronic Materials and technologies and School of Electronics and Information Technology Sun Yat-sen UniversityGuangzhou 510275China

As one solution to implement the largecapacity space division multiplexing(SDM)transmission systems,the mode division multiplexing(MDM)has gained much attention *** vector mode(VM),which is the eigenmode of the optical fiber,has also been adopted to realize the optical communications including the transmission over free-space optical(FSO)and optical fiber *** the concerns on the short-reach optical interconnects,the low cost and high integration technologies should be *** detection(DD)with higher-order modulation formats in combination of MDM technologies could offer an available trade-off in system performance and *** review demonstrations of FSO and fiber high-speed data transmission based on the VM MDM(VMDM)*** special VMs,cylindrical vector beams(CVB),have been generated by the q-plate(QP)and characterized *** then they were used to implement the VMDM transmission with direct-detection orthogonal frequency division multiplexing(DD-OFDM).These demonstrations show the potential of VMDM-DD-OFDM technology in the large-capacity short-reach transmission links.

关键词： space division multiplexing (SDM) mode division multiplexing (MDM) few-mode fiber (FMF) vector mode (VM) cylindrical vector beam (CVB) orthogonal frequency division multiplexing (OFDM) direct detection (DD) optical interconnect

Tb^(3+)-xylenol orange complex-based colorimetric and luminometric dual-readout sensing platform for dipicolinic acid and metal ions

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Chinese Chemical Letters 2023年第1期34卷 555-559页

作者： Lixia Lu Xinyu Shao Xiaoxiao Lin Linhe Ding Bingchan Song Jian Sun shandong Provincial key laboratory of Animal Resistance Biology Institute of Biomedical SciencesKey Laboratory of Food Nutrition and Safety of Shandong Normal UniversityCollege of Life ScienceShandong Normal UniversityJi nan 250014China State key laboratory of Electroanalytical Chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China

A dual-readout sensing platform based on two signal transduction channels can integrate the unique advantages of each sensing pattern,compensate for the deficiency in the adaptive capacity,and enable a more convincing performance in analytical ***,we introduce a responsive molecule dye,xylenol orange(XO),to combine with lanthanide terbium ions(Tb^(3+)).The resultant Tb^(3+)-XO complex exhibited tunable optical properties and was used as a novel colorimetric and luminometric dual-readout sensing platform for assaying the anthrax biomarker,dipicolinic acid(DPA).In the presence of Tb^(3+),the XO solution underwent a color change from yellow to magenta;however,upon adding DPA,the color changed back to yellow immediately,accompanied by the characteristic luminescence emission of Tb^(3+).Considering the strong affinity between DPA/XO and metal ions,the proposed sensing platform was further employed for the determination and differentiation of certain metal ions using linear discriminant *** convenient dual-readout sensing platform offers several notable features and significantly promotes the application and development of lanthanide-based materials.

关键词： Lanthanide complex Xylenol orange Bacillus anthracis Multiple detection Linear discriminant analysis

Research on the Surface Subsidence Monitoring Technology Based on fiber Bragg Grating sensing

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Photonic Sensors 2017年第1期7卷 20-26页

作者： Jinyu WANG Long JIANG Zengrong SUN Binxin HU Faxiang ZHANG Guangdong SONG Tongyu LIU Junfeng QI Longping ZHANG key laboratory of optical fiber sensing Technology of shandong Province Laser Institute of Shandong Academy ofScience Jinan 250014 China shandong Micro-Sensor Photomcs Ltd Jinan 250014 China shandong Shenglong Safe Technology Co. Ltd Jinan 250032 China Laiwu Mining Co. Ltd of Laiwu Steel Group Laiwu 271100 China

In order to monitor the process of surface subsidence caused by mining in real time, we reported two types of fiber Bragg grating （FBG） based sensors. The principles of the FBG-based displacement sensor and the FBG-based micro-seismic sensor were described. The surface subsidence monitoring system based on the FBG sensing technology was designed. Some factual application of using these FBG-based sensors for subsidence monitoring in iron mines was presented.

关键词： fiber Bragg Grating rock mass displacement micro-seismic optical fiber sensing surface subsidence

Integrating Sentinel-1 and 2 with LiDAR data to estimate aboveground biomass of subtropical forests in northeast Guangdong, China

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International Journal of Digital Earth 2023年第1期16卷 158-182页

作者： Linjing Zhang Xiaoxue Zhang Zhenfeng Shao Wenhao Jiang Huimin Gao College of Geodesy and Geomatics Shandong University of Science and TechnologyQingdaoPeople’s Republic of China key laboratory of Ocean Geomatics Ministry of Natural ResourcesQingdaoPeople’s Republic of China State key laboratory of Information Engineering in Surveying Mapping and Remote SensingWuhan UniversityWuhanPeople’s Republic of China

Accurate monitoring of forest aboveground biomass(AGB)is vital for sustainable forest ***,the AGB is estimated by combining satellite images andfield ***,field plots are inaccessible in complex forest *** to the limitations related to either optical or SAR data alone,combining the two data types is ***,we explored the LiDAR-derived biomass as training/testing samples for the combination of yearly time-series of Sentinel-1 and Sentinel-2 images to estimate AGB in north-eastern Conghua,Guangdong province,*** AGB reference map derived from airborne LiDAR data andfield plots could provide more samples for satellite-based AGB estimation with a limited amount of sampling *** designed four groups of experiments based on diverse Sentinel-1 and Sentinel-2 variables,including backscatter,backscatter indices,texture features,spectral bands,vegetation indices,and biophysical *** different prediction methods(support vector regression,multi-layer perceptron neural network,K-nearest neighbour,and random forest(RF))were separately used to estimate *** showed that the RF model achieved the best accuracy for AGB *** Sentinel-1 and Sentinel-2 experiment(R^(2):0.72,RMSEr:17.65%)performed better than the monthly complementary experiment(R^(2):0.66,RMSEr:19.01%).Additionally,the arid period images were observed to be sensitive for estimating *** most contributing Sentinels predictors were determined via a sequential forward ***,the proposed methodology has great potential for low-cost,large-scale,and high-precision AGB estimation.

关键词： Sentinel liDAR aboveground biomass non-parametric models subtropical forest

Silicon photonic devices for scalable quantum information applications

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Photonics Research 2022年第10期10卷 I0004-I0022页

作者： LANTIAN FENG MING ZHANG JIANWEI WANG XIAOQI ZHOU XIAOGANG QIANG GUANGCAN GUO XIFENG REN CAS key laboratory of Quantum Information University of Science and Technology of ChinaHefei 230026China CAS Center for Excellence in Quantum Information and Quantum Physics University of Science and Technology of ChinaHefei 230026China Hefei National laboratory University of Science and Technology of ChinaHefei 230088China State key laboratory for Modern optical Instrumentation Centre for Optical and Electromagnetic ResearchZhejiang Provincial Key Laboratory for Sensing TechnologiesZhejiang UniversityZijingang CampusHangzhou 310058China State key laboratory for Mesoscopic Physics School of PhysicsPeking UniversityBeijing 100871China Frontiers Science Center for Nano-optoelectronics Collaborative Innovation Center of Quantum MatterPeking UniversityBejing 100871China School of Physics and State key laboratory of Optoelectronic Materials and technologies Sun Yat-sen UniversityGuangzhou 510000China National Innovation Institute of Defense Technology AMSBeijing 100071China

With high integration density and excellent optical properties, silicon photonics is becoming a promising platform for complete integration and large-scale optical quantum information processing. Scalable quantum information applications need photon generation and detection to be integrated on the same chip, and we have seen that various devices on the silicon photonic chip have been developed for this goal. This paper reviews the relevant research results and state-of-the-art technologies on the silicon photonic chip for scalable quantum applications. Despite the shortcomings, the properties of some components have already met the requirements for further expansion. Furthermore, we point out the challenges ahead and future research directions for on-chip scalable quantum information applications.

关键词： expansion quantum shortcomings

Side Polished fiber:A Versatile Platform for Compact fiber Devices and Sensors

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Photonic Sensors 2023年第1期13卷 1-24页

作者： Linqing ZHUO Jieyuan TANG Wenguo ZHU Huadan ZHENG Heyuan GUAN Huihui LU Yaofei CHEN Yunhan LUO Jun ZHANG Yongchun ZHONG Jianhui YU Zhe CHEN key laboratory of Optoelectronic Information and sensing technologies of Guangdong Higher Education Institutes Department of Optoelectronic EngineeringJinan UniversityGuangzhou 510632China Engineering Research Center on Visible Light Communication of Guangdong Province Department of Optoelectronic EngineeringJinan UniversityGuangzhou 510632China key laboratory of Visible Light Communications of Guangzhou Jinan UniversityGuangzhou 510632China

Side polished fiber(SPF)has a controllable average roughness and length of the side-polishing region,which becomes a versatile platform for integrating multiple materials to interact with the evanescent field to fabricate all-fiber devices and *** has been widely used in couplers,filters,polarizers,optical attenuators,photodetectors,modulators,and sensors for temperature,humidity,strain,biological molecules,chemical gas,and vector magnetic *** this article,an overview of the development history,fabrication techniques,fiber types,transmission characteristics,and varied recent applications of SPFs are ***,the fabrication techniques of SPFs are reviewed,including the V-groove assisted polishing technique and wheel polishing ***,the different types of SPFs and their characteristics are ***,various applications of SPFs are discussed and concluded theoretically and experimentally,including their principles and *** designing the device,the residual thickness and polishing lengths of the SPF need to be appropriately selected in order to obtain the best *** all-fiber devices and sensors is aimed at practical usability under harsh environments and allows to avoid the high coupling loss between optical fibers and on-chip integrated devices.

关键词： Side polished fiber(SPF) V-groove assisted polishing technique wheel polishing technique lab-on-fiber fiberdevices sensors

Silicon hybrid nanoplasmonics for ultra-dense photonic integration

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Frontiers of Optoelectronics 2014年第3期7卷 300-319页

作者： Xiaowei GUAN Hao WU Daoxin DAI State key laboratory for Modem optical Instrumentation Centre for Optical and Electromagnetic Research Zhejiang Provincial Key Laboratory for Sensing Technologies Zhejiang University Hangzhou 310058 China

Recently hybrid plasmonic waveguides have been becoming very attractive as a promising candidate to realize next-generation ultra-dense photonic integrated circuits because of the ability to achieve nano-scale confinement of light and relatively long propagation distance. Furthermore, hybrid plasmonic waveguides also offer a platform to merge photonics and electronics so that one can realize ultra-small optoelectronic integrated circuits （OEICs） for high-speed signal generation, processing as well as detection. In this paper, we gave a review for the progresses on various hybrid plasmonic wave- guides as well as ultrasmall functionality devices developed recently.

关键词： plasmonics hybrid silicon nanowire integration

Spatial-frequency-shift enables integrated super-resolution microscopy:advance and perspective

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Science Bulletin 2022年第13期67卷 1317-1321页

作者： Chenlei Pang Xiaowei Liu Mingwei Tang Qing Yang Xu Liu Research Center for Humanoid sensing and Perception Zhejiang LabHangzhou 311100China State key laboratory of Modern optical Instrumentation College of Optical Science and EngineeringInternational Research Center for Advanced PhotonicsZhejiang UniversityHangzhou 310027China Collaborative Innovation Center of Extreme Optics Shanxi UniversityTaiyuan 030006China

The invention of the optical microscope is significant to the development of many aspects of science and technology,including novel materials,life sciences and medicine,for its superiorities in resolving fine ***,rest... 详细信息

关键词： enable restrained limit