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Constructing low-dimensional perovskite network to assist efficient and stable perovskite solar cells

Journal of Energy Chemistry 2024年第9期96卷 625-632页

作者： Jinwen Gu Xianggang Sun Pok Fung chan Xinhui lu Peng Zeng Jue Gong Faming li Mingzhen liu School of Materials and Energy University of Electronic Science and Technology of ChinaChengdu 611731SichuanChina Department of Physics The Chinese University of Hong Kong Shatin999077Hong KongChina Sichuan University-Pittsburgh Institute Sichuan UniversityChengdu 610065China State Key laboratory Electronic Thin Film and Integrated Devices University of Electronic Science and Technology of ChinaChengdu 611731SichuanChina

The use of low-dimensional(lD)perovskite materials is crucial for achieving high-performance perovskite solar cells(PSCs).However,lD perovskite films fabricated by conventional approaches give rise to full coverage of the underlying 3D perovskite films,which inevitably hinders the transport of charge carriers at the interface of ***,we designed and fabricated lD perovskite structure that forms net-like morphology on top of the underlying three-dimensional(3D)perovskite bulk *** net-like lD perovskite not only reduced the surface defects of 3D perovskite film,but also provided channels for the vertical transport of charge carriers,effectively enhancing the interfacial charge transfer at the lD/3D *** net-like morphological design comprising lD perovskite effectively resolves the contradiction between interfacial defect passivation and carrier extraction across the ***,the net-like lD perovskite morphology can enhance the stability of the underlying 3D perovskite film,which is attributed to the hydrophobic nature of lD *** a result,the net-like lD perovskite film morphology assists PSCs in achieving an excellent power conversion efficiency of up to 24.6%with over 1000 h long-term operational stability.

关键词： low-dimensional perovskite Network Carrier transport Perovskite solar cell Stability

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Key Technologies and Prospects for Electric Vehicles within Emerging Power Systems: Insights from Five Aspects

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CSEE Journal of Power and Energy Systems 2024年第2期10卷 439-447页

作者： Yalun li Minggao Ouyang C.C.chan Xueliang Sun Yonghua Song wei Cai Yilin Xie Yuqiong Mao Department of Electrical Engineering and School of Vehicle and MobilityTsinghua UniversityBeijing 100084China School of Vehicle and Mobility Tsinghua UniversityBeijing 100084China Department of Electrical and Electronic Engineering The University of Hong KongHong Kong 999077China Department of Mechanical and Materials Engineering University of Western OntarioLondonON N6A 3K7Canada State Key laboratory of Internet of Things for Smart City University of MacaoTaipaMacao 999078China Department of Electrical Engineering Tsinghua UniversityBeijing 100084China School of Electrical and Electronic Engineering Harbin University of Science and TechnologyHarbin 150080China

The energy revolution requires coordination in energy consumption, supply, storage and institutional *** energy generation technologies, along with their associated costs, are already fully equipped for large-scale ***, energy storage remains a bottleneck, and solutions areneeded through the use of electric vehicles, which traditionallyplay the role of energy consumption in power systems. Toclarify the key technologies and institutions that support EVsas terminals for energy use, storage, and feedback, the CSEEJPES forum assembled renowned experts and scholars in relevantfields to deliver keynote reports and engage in discussions ontopics such as vehicle–grid integration technology, advancedsolid-state battery technology, high-performance electric motortechnology, and institutional innovation in the industry *** experts also provided prospects for energy storage andutilization technologies capable of decarbonizing new powersystems.

关键词： Electric vehicles engineering philosophy highpower density motor new power system solid state batteries vehicle grid integration.

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Anneal-free ultra-low loss silicon nitride integrated photonics

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light(Science & Applications) 2024年第8期13卷 1565-1577页

作者： Debapam Bose Mark w.Harrington Andrei Isichenko Kaikai liu Jiawei wang Nitesh Chauhan Zachary l.Newman Daniel J.Blumenthal Department of Electrical and Computer Engineering University of California Santa BarbaraSanta BarbaraCA 93106USA Octave Photonics LouisvilleCO 80027USA

Heterogeneous and monolithic integration of the versatile low-loss silicon nitride platform with low-temperature materials such as silicon electronics and photonics,III–V compound semiconductors,lithium niobate,organics,and glasses has been inhibited by the need for high-temperature annealing as well as the need for different process flows for thin and thick *** techniques are needed to maintain the state-of-the-art losses,nonlinear properties,and CMOS-compatible processes while enabling this next generation of 3D silicon nitride *** report a significant advance in silicon nitride integrated photonics,demonstrating the lowest losses to date for an anneal-free process at a maximum temperature 250℃,with the same deuterated silane based fabrication flow,for nitride and oxide,for an order of magnitude range in nitride thickness without requiring stress mitigation or *** report record low anneal-free losses for both nitride core and oxide cladding,enabling 1.77 dBm^(-1) loss and 14.9 million Q for 80 nm nitride core waveguides,more than half an order magnitude lower loss than previously reported sub 300℃ *** 800 nm-thick nitride,we achieve as good as 8.66 dBm^(-1) loss and 4.03 million Q,the highest reported Q for a low temperature processed resonator with equivalent device area,with a median of loss and Q of 13.9 dBm^(-1) and 2.59 million each *** demonstrate laser stabilization with over 4 orders of magnitude frequency noise reduction using a thin nitride reference cavity,and using a thick nitride micro-resonator we demonstrate OPO,over two octave supercontinuum generation,and four-wave mixing and parametric gain with the lowest reported optical parametric oscillation threshold per unit resonator *** results represent a significant step towards a uniform ultra-low loss silicon nitride homogeneous and heterogeneous platform for both thin and thick waveguides capable of linear and nonlinear photonic circuits and

关键词： resonator thick free

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label-free biosensing with singular-phaseenhanced lateral position shift based on atomically thin plasmonic nanomaterials

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light(Science & Applications) 2024年第5期13卷 810-822页

作者： Shaodi Zhu Rodolphe Jaffiol Aurelian Crunteanu Cyrille Vézy Sik-To chan wu Yuan Ho-Pui Ho Shuwen Zeng light Nanomaterials&Nanotechnologies(L2n)CNRS-EMR 7004University of Technology of Troyes10000 TroyesFrance. Department of Biomedical Engineering The Chinese University of Hong KongShatinNew TerritoriesHong KongChina XlIM Research Institute UMR 7252 CNRS/University of Limoges123Avenue Albert ThomasLimogesFrance

Rapid plasmonic biosensing has attracted wide attention in early disease diagnosis and molecular biology ***,it was still challenging for conventional angle-interrogating plasmonic sensors to obtain higher sensitivity without secondary amplifying labels such as plasmonic *** address this issue,we developed a plasmonic biosensor based on the enhanced lateral position shift by phase *** singularity presents as a sudden phase retardation at the dark point of reflection from resonating plasmonic substrate,leading to a giant position shift on reflected ***,for the first time,the atomically thin layer of Ge2Sb2Te5(GST)on silver nanofilm was demonstrated as a novel phase-response-enhancing plasmonic *** GST layer was not only precisely engineered to singularize phase change but also served as a protective layer for active silver *** new configuration has achieved a record-breaking largest position shift of 439.3μm measured in calibration experiments with an ultra-high sensitivity of 1.72×10^(8)nm RIU−1(refractive index unit).The detection limit was determined to be 6.97×10^(−7)RIU with a 0.12μm position ***,a large figure of merit(FOM)of 4.54×10^(11)μm(RIU∙°)^(−1)was evaluated for such position shift interrogation,enabling the labelfree detection of trace amounts of *** targeted biosensing experiments,the optimized sensor has successfully detected small cytokine biomarkers(TNF-αand Il-6)with the lowest concentration of 1×10^(−16)*** two molecules are the key proinflammatory cancer markers in clinical diagnosis,which cannot be directly screened by current clinical *** further validate the selectivity of our sensing systems,we also measured the affinity of integrin binding to arginylglycylaspartic acid(RGD)peptide(a key protein interaction in cell adhesion)with different Mn2+ion concentrations,ranging from 1 nM to 1 mM.

关键词： diagnosis protective silver

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Facile synthesis of hierarchical NaX zeolite from natural kaolinite for efficient Knoevenagel condensation

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Chinese Journal of Chemical Engineering 2024年第1期65卷 75-84页

作者： wen Xiao Peng Dong chan wang Jingdong Xu Tiesen li Haibo Zhu Tinghai wang Renwei Xu Yuanyuan Yue National Engineering Research Center of Chemical Fertilizer Catalyst College of Chemical EngineeringFuzhou UniversityFuzhou 350108China Qingyuan Innovation laboratory Quanzhou 362801China Sinochem Quanzhou Energy Technology Co. Ltd.Quanzhou 362000China

Zeolite catalysts have found extensive applications in the synthesis of various fine ***,the micropores of zeolites impose diffusion limitations on bulky molecules,greatly reducing the catalytic ***,we explore an economic and environmentally friendly method for synthesizing hierarchical NaX zeolite that exhibits improved catalytic performance in the Knoevenagel condensation reaction for producing the useful fine chemical *** synthesis was achieved via a low-temperature activation of kaolinite and subsequent in-situ transformation strategy without any template or *** characterizations reveal that the synthesized NaX zeolite has both intercrystalline and intra-crystalline mesopores,smaller crystal size,and larger external specific surface area compared to commercial NaX *** mechanism investigations show that the inter-crystalline mesopores are generated by stacking smaller crystals formed from in-situ crystallization of the depolymerized kaolinite,and the intra-crystalline mesopores are inherited from the pores in the depolymerized *** synthesis strategy provides an energy-saving and effective way to construct hierarchical zeolites,which may gain wide applications in fine chemical manufacturing.

关键词： Hierarchical NaX zeolite Template-free synthesis Natural kaolinite Knoevenagel condensation

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Circadian rhythm dysfunction and psychopathology in the offspring of parents with bipolar disorder:a highrisk study in the Chinese population

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General Psychiatry 2024年第3期37卷 388-400页

作者： Binbin lei Hongliang Feng lulu Yang Jing wang Jie Chen weidong Song Chao Jiang Kun Zhang Qunfeng wang Jessie Chi Ching Tsang Ngan Yin chan Yaping liu Joey w.Y.chan Jiyang Pan Bin Zhang Tao li Kathleen Ries Merikangas Jihui Zhang Yun Kwok wing Guangdong Cardiovascular Institute Guangdong Provincial People's HospitalGuangdong Academy of Medical SciencesGuangzhouGuangdongChina Guangdong Mental Health Center Guangdong Provincial People's Hospital(Guangdong Academy of Medical Sciences)Southern Medical UniversityGuangzhouGuangdongChina li Chiu Kong Family Sleep Assessment Unit Department of PsychiatryFaculty of MedicineThe Chinese University of Hong KongHong KongChina Center for Sleep and Circadian Medicine The Affiliated Brain Hospital of Guangzhou Medical UniversityGuangzhouGuangdongChina Department of Psychiatry Faculty of MedicineThe Chinese University of Hong KongNew TerritoriesHong KongChina Key laboratory of Neurogenetics and channelopathies of Guangdong Province and the Ministry of Education of China Guangzhou Medical UniversityGuangzhouGuangdongChina Shenzhen Nanshan Center for Chronic Diseases Control(Shenzhen Nanshan Mental Health Center) ShenzhenChina Department of Clinical Psychology Shenzhen Fuyong People's HospitalShenzhenChina Department of Mental Illness Prevention and Treatment Shenzhen Longgang Center for Chronic Diseases ControlShenzhenChina Department of Neurology Zhongnan Hospital of Wuhan UniversityWuhanHubeiChina Sleep Medical Center The First Affiliated Hospital of Jinan UniversityGuangzhouGuangdongChina Department of Psychiatry Nanfang HospitalSouthern Medical UniversityGuangdong-Hong Kong-Macao Greater Bay Area Center for Brain Science and Brain-Inspired IntelligenceGuangzhouGuangdongChina Department of Neurobiology Affiliated Mental Health Center&Hangzhou Seventh People's HospitalZhejiang University School of MedicineHangzhouZhejiangChina Genetic Epidemiology Research Branch Intramural Research ProgramNational Institute of Mental HealthBethesdaMarylandUSA

Background Understanding the evolution of circadian rhythm dysfunction and psychopathology in the high-risk population has important implications for the prevention of bipolar ***,some of the previous studies on the emergence of psychopathologies and circadian dysfunction among high-risk populations were inconsistent and *** To examine the prevalence rates of sleep and circadian dysfunctions,mental disorders and their symptoms in the offspring of parents with(O-BD)and without bipolar disorder(O-control).Methods The study included 191 O-BD and 202 O-control subjects aged 6-21 years from the Greater Bay Area,*** diagnoses and symptoms of sleep/circadian rhythm and mental disorders were assessed by the Diagnostic Interview for Sleep Patterns and Disorders,and the Schedule for Affective Disorders and Schizophrenia for School-Age Children-Present and lifetime Version,*** estimating equations and shared frailty proportional hazards models of survival analysis were applied to compare the outcomes in the *** Adjusting for age,sex and region of recruitment,there was a significantly higher risk of delayed sleep phase symptoms(9.55%vs 2.58%,adjusted OR:4.04)in O-BD than in O-control.O-BD had a nearly fivefold higher risk of mood disorders(11.70%vs 3.47%,adjusted OR:4.68)and social anxiety(6.28%vs 1.49%,adjusted OR:4.70),a fourfold higher risk of depressive disorders(11.17%vs 3.47%,adjusted OR:3.99)and a threefold higher risk of mood symptoms(20.74%vs 10.40%,adjusted OR:2.59)than *** analysis revealed that O-BD children(aged under 12 years)had a nearly 2-fold higher risk of any mental and behavioural symptoms than O-control,while there was a nearly 4-fold higher risk of delayed sleep phase symptoms,a 7.5-fold higher risk of social anxiety and a 3-fold higher risk of mood symptoms in O-BD adolescents(aged 12 years and over).Conclusions There was an increase in delayed sleep phase symptoms in O-BD

关键词： prevention dysfunction bipolar

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Silicone oil as a corneal lubricant to reduce corneal edema and improve visualization during

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International Journal of Ophthalmology(English edition) 2024年第1期17卷 92-96页

作者： Dan-Yang Che Zhu-lin chan Ji-Bo Zhou Dong-Qing Zhu Department of Ophthalmology Ninth People’s HospitalShanghai Jiao Tong University School of MedicineShanghai 200011China College of Health Science and Technology Shanghai Jiao Tong University School of MedicineShanghai 200011China The PlA Navy Anqing Hospital Anqing 246004Anhui ProvinceChina

AIM:To evaluate the efficacy and safety of silicone oil(SO)as a corneal lubricant to improve visualization during ***:Patients who underwent vitreoretinal surgery were divided into two *** 1 was operated on with initial SO(Oxane 5700)as a corneal *** 2 was operated on with initial lactated ringer’s solution(lRS)and then replaced with SO as *** clarity was scored during the *** staining was performed to determine the damage to corneal ***:Totally 114 eyes of 114 patients were *** SO use maintained a clear cornea and provided excellent visualization of surgical *** group 1,the fundus clarity was grade 3 in 41/45 eyes and grade 2 in 4/45 *** group 2,corneal edema frequently occurred after initial lRS *** fundus clarity was grade 3 in 19/69 eyes,2 in 37/69 eyes and 1 in 13/69 eyes(Pwas applied in 29 eyes of initial lRS use with subsequent corneal edema,which eliminated the corneal edema in 26 *** fluorescein staining score in group 1 was 0 in 28 eyes,1 in 11 eyes and 2 in 6 eyes,and 40,20 and 9,respectively,in group 2(all P>0.05).CONClUSION:The use of SO as a corneal lubricant is effective and safe for preserving and improving corneal clarity and providing clear surgical field during vitrectomy.

关键词： silicone oil corneal lubricant corneal edema vitrectomy

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Recent development in degradation mechanisms of proton exchange membrane fuel cells for vehicle applications:problems,progress,and perspectives

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Energy Storage and Saving 2024年第2期3卷 106-152页

作者： Zikuo liu Shanshan Cai Zhengkai Tu Siew Hwa chan School of Energy and Power Engineering Huazhong University of Science and TechnologyWuhan430074China Energy Research Institute Nanyang Technological University637553Singapore

Due to its zero emissions,high efficiency and low noise,proton exchange membrane fuel cell(PEMFC)is full of potential for the application of vehicle power ***,its lifespan and durability remain multiple obstacles to be solved before widespread *** exposure to non-rated operating conditions could considerably accelerate the degradation of the PEMFC in various forms,thus reducing its *** paper first analyzes degradation mechanisms of PEMFCs under typical automotive operating conditions,including idling,startup-shutdown,dynamic loads,and cold *** corresponding accelerated stress testing methods are also ***,as the impurities existed in the reaction gas source and generated from the degradation of the PEMFC itself may occur under all automotive conditions,the degradation mechanisms caused by impurity contamination are classified and reviewed in *** that,the techniques proposed by researchers to enhance the durability of PEMFCs are presented from four aspects:membrane electrode assembly materials,bipolar plates and flow fields design,stack assembly,and cell control *** challenges in the field and the prospects for the future are summarized and analyzed at the *** aim of this work is to provide guidelines for improving the durability of PEMFCs in vehicle applications.

关键词： Proton exchange membrane fuel cell Vehicle Automotive operating conditions Degradation Durability

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Editorial for Multiscale&Multifield Coupling in Geomechanics

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Journal of Rock Mechanics and Geotechnical Engineering 2024年第6期16卷 1919-1921页

作者： Min wang Pengzhi Pan Andrew H.C.chan Y.T.Feng T-3 Fluid Dynamics and Solid Mechanics Theoretical DivisionLos Alamos National LaboratoryNew MexicoUSA Institute of Rock and Soil Mechanics Chinese Academy of SciencesWuhanChina School of Engineering University of TasmaniaTasmaniaAustralia College of Engineering Swansea UniversityWalesUK

we are delighted to serve as guest editors for this special issue in the Journal of Rock Mechanics and Geotechnical *** purpose of this special issue is dedicated to gathering the latest research work on Multiscale&Multifield Coupling in Geomechanics,where we delve into the intricate interplay of various fields and scales that govern the behavior of *** total,30 manuscripts from USA,China,UK,Germany,Canada,India and United Arab Emirates are selected to be included in this issue.

关键词： materials. gathering mechanics

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Numerical multi-physical optimization of operating condition and current collecting setup for large-area solid oxide fuel cells

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Frontiers in Energy 2024年第3期18卷 356-368页

作者： Chengrong YU Zehua PAN Hongying ZHANG Bin CHEN wanbing GUAN Bin MIAO Siew Hwa chan Zheng ZHONG Yexin ZHOU School of Science Harbin Institute of TechnologyShenzhen 518055China Guangdong Provincial Key laboratory of Deep Earth Sciences and Geothermal Energy Exploitation and Utilization Institute of Deep Earth Sciences and Green EnergyShenzhen UniversityShenzhen 518060China Key laboratory of Advanced Fuel Cells and Electrolyzers Technology of Zhejiang Province Ningbo Institute of Materials Technology and Engineering of the Chinese Academy of SciencesNingbo 315201China Energy Research Institute at NTU(ERIAN) Nanyang Technological UniversitySingapore 639798Singapore

Due to the depletion of traditional fossil fuels and the aggravation of related environmental problems,hydrogen energy is gaining more attention all over the *** oxide fuel cell(SOFC)is a promising power generation technology operating on hydrogen with a high *** further boost the power output of a single cell and thus a single stack,increasing the cell area is an effective ***,it was recently found that further increasing the effective area of an SOFC single cell with a flat-tubular structure and symmetric double-sided cathodes would result in a lower areal *** this work,a multi-physical model is built to study the effect of the effective area on the cell *** distribution of different physical fields is systematically *** of the cell performance is also pursued by systematically tuning the cell operating condition and the current collection *** improvement of 42%is revealed by modifying the inlet gas flow rates and by enhancing the current *** the future,optimization of cell geometry will be performed to improve the homogeneity of different physical fields and thus to improve the stability of the cell.

关键词： solid oxide fuel cell(SOFC) large effective area flow rate discharge performance current collection

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