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Understanding of the Relationship between the Properties of Cu(In,Ga)Se_(2) Solar Cells and the Structure of Ag Network Electrodes

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Energy & Environmental Materials 2024年第6期7卷 246-253页

作者： Hyesun yoo Hoang Van Quy Inpyo Lee Seung Taek Jo Tae Ei Hong JunHo Kim dae-hwang yoo Jinwook Shin Walter Commerell dae-Hwan Kim Jong Wook Roh Regional Leading Research Center(RLRC)of Smart Energy System Kyungpook National UniversityGyeongsangbuk-do 37224Korea Division of Energy Technology DaeguGyeongbuk Institute of Science and Technology(DGIST)Daegu 42988Korea Department of Hydrogen and Renewable Energy Kyungpook National UniversityDaegu 47922Korea Nano Photoelectronic Device Lab Department of PhysicsIncheon National UniversityIncheon 22012Korea Institute for Energy and Drive Technology Technische Hochschule Ulm(THU)Ulm 89081Germany Department of Nano&Advanced Materials Science and Engineering Kyungpook National UniversityGyeongsangbuk-do 37224Korea

The relation between the structure of the silver network electrodes and the properties of Cu(In,Ga)Se_(2)(CIGS)solar cells is systemically *** Ag network electrode is deposited onto an Al:ZnO(AZO)thin film,employing a self-forming cracked *** control over the cracked template's structure is achieved through careful adjustment of temperature and *** Ag network electrodes with different coverage areas and network densities are systemically applied to the CIGS solar *** is revealed that predominant fill factor(FF)is influenced by the figure of merit of transparent conducting electrodes,rather than sheet resistance,particularly when the coverage area falls within the range of 1.3–5%.Furthermore,a higher network density corresponds to an enhanced FF when the coverage areas of the Ag networks are *** utilizing a thinner AZO film,CIGS solar cells with a surface area of 1.0609 cm^(2)exhibit a notable performance improvement,with efficiency increasing from 10.48%to 11.63%.This enhancement is primarily attributed to the increase in FF from 45%to 65%.These findings underscore the considerable potential for reducing the thickness of the transparent conductive oxide(TCO)in CIGS modules with implications for practical applications in photovoltaic technology.

关键词： CIGS large-area solar cell metal mesh metallic network transparent electrode

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Enhanced solid-electrolyte interface efficiency for practically viable hydrogen-air fuel cell systems

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Journal of Energy Chemistry 2025年第1期100卷 356-368页

作者： Venkitesan Sakthivel Dong Jin yoo Graduate School Department of Energy Storage/Conversion Engineering(BK21 FOUR)Hydrogen and Fuel Cell Research CenterJeonbuk National UniversityJeonju567 Baekje-daeroDeokjin-guJeonju-siJeollabuk-do 54896Republic of Korea Department of Life ScienceJeonbuk National University567 Baekje-daeroDeokjin-guJeonju-siJeollabuk-do 54896Republic of Korea

Proton exchange membrane fuel cells (PEMFCs) provide an appealing sustainable energy system,with the solid-electrolyte membrane playing a crucial role in its overall ***,sulfonated poly(1,4-phenylene ether-ether sulfone)(SPEES),an aromatic hydrocarbon polymer,has garnered considerable attention as an alternative to Nafion ***,the long-term durability and stability of SPEES present a significant *** this context,we introduce a potential solution in the form of an additive,specifically a core–shell-based amine-functionalized iron titanate (A–Fe_(2)TiO_(5)),which holds promise for improving the lifetime,proton conductivity,and power density of SPEES in *** modified SPEES/A–Fe_(2)TiO_(5)composite membranes exhibited notable characteristics,including high water uptake,enhanced thermomechanical stability,and oxidative ***,the SPEES membrane loaded with 1.2 wt%of A–Fe_(2)TiO_(5)demonstrates a maximum proton conductivity of 155 mS ccm^(-1),a twofold increase compared to the SPEES membrane,at 80°C under 100%relative humidity (RH).Furthermore,the 1.2 wt%of A–Fe_(2)TiO_(5)/SPEES composite membranes exhibited a maximum power density of 397.37 mW cm^(-2)and a current density of 1148 mA cm^(-2)at 60°C under 100%RH,with an opencircuit voltage decay of 0.05 m V/h during 103 h of continuous *** study offers significant insights into the development and understanding of innovative SPEES nanocomposite membranes for PEMFC applications.

关键词： Acid-base Hybrid membrane Proton conductivity Polymer electrolyte fuel cell Single-cell performance

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What Is the Psychosocial Environment of Adolescents with High or Low Internalizing Behavior?

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International Journal of Mental Health Promotion 2025年第1期27卷 77-88页

作者： Changmin yoo Department of Social Welfare Inha UniversityIncheon22212Republic of Korea

Objective:This study aimed to examine the developmental trajectories of internalizing behaviors among adolescents and to identify key personal and environmental factors associated with these developmental patterns over ***:Data were collected from 2242 adolescents(49.6%girls,aged 13.9–18.9 years)in South *** class growth analysis was used to identify distinct developmental patterns of internalizing *** logistic regression analyses were conducted to examine the associations between these developmental patterns and various factors including gender,self-esteem,abuse and neglect experiences,peer relationships,and media ***:The analysis revealed three latent classes of internalizing behavior trajectories among *** first group,the“mid decreasing group”,comprised 54.5%of the sample(1221 students),indicating a moderate level of internalizing behavior that declined over *** second group,the“high decreasing group”,included 19.1%of the sample(429 students),characterized by initially high levels of internalizing behavior that *** third group,the“low maintained group”,represented 26.4%of the sample(592 students),indicating consistently low levels of internalizing *** such as gender,self-esteem,experiences of abuse and neglect,peer relationships(trust and alienation),smartphone dependency,and time spent watching TV/videos were significantly associated with these latent ***:Three distinct developmental patterns of internalizing behaviors were identified among adolescents:mid-decreasing(54.5%),high-decreasing(19.1%),and low-maintained(26.4%).Gender,self-esteem,abuse experiences,and peer relationships were significant predictors of these developmental patterns.

关键词： Internalizing behavior adolescents longitudinal analysis

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Conversion of N-doped biochar from carotenoid-extracted Tetraselmis suecica and its application to produce supercapacitors

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Journal of Environmental Sciences 2025年第5期151卷 410-423页

作者： Se Hun Lee Kang Hyun Lee Sang-hwa Lee Soo Kweon Lee Ok Sung Jeon Young Pyo Jeon Dongpyo Hong Young Joon yoo Sang yoon Park Hah Young yoo Advanced Institute of Convergence Technology(AICT) Seoul National UniversitySuwon 16229Republic of Korea Department of Biotechnology Sangmyung University20 Hongjimun 2-GilJongno-GuSeoul 03016Republic of Korea Department of Bio-Convergence Engineering Dongyang Mirae University445-8Gyeongin-roGuro-guSeoul 08221Republic of Korea Fermentation team Lotte R&D Center210 Magokjungang-RoGangseo-GuSeoul 07594Republic of Korea School of Electronic Engineering Kyonggi UniversityGyeonggi-do 16227Republic of Korea

Microalgae are one of the promising feedstocks for biorefinery,contributing significantly to net-zero emissions through carbon capture and ***,the disposal of microalgal byproducts from the manufacturing process causes additional environmental pollution,thus,a new application strategy is *** this study,the Tetraselmis suecica byproduct from the carotenoid extraction process was carbonized and converted into *** converted biochar was proved to be nitrogen-doped biochar(NDB),up to 4.69%,with a specific surface area of 206.59m^(2)/g andwas used as an electrode for a *** NDB electrode(NDB-E)in half-cell showed a maximum specific capacitance of 191 F/*** a full-cell test,the NDB-E exhibited a high energy density of 7.396 Wh/kg and a high-power density of 18,100 W/kg,and maintained specific capacity of 95.5%after charge and discharge of 10,000 *** conclusion,our study demonstrated that the carotenoid-extracted microalgal byproducts are a useful resource for the supercapacitor *** approach is the first to convert *** into active materials for supercapacitors.

关键词： Microalgae Tetraselmis suecica Carbonization N-doped biochar Supercapacitor

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Traumatic subhyaloid hemorrhage treated with argon laser-assisted hyaloidotomy

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International Journal of Ophthalmology(English edition) 2025年第3期18卷 562-564页

作者： Seokoh Lee Ga Hee Han yoo-Ri Chung Department of Ophthalmology Ajou University School of MedicineSuwon 16499Republic of Korea Department of Ophthalmology Pitié-Salpêtrière University HospitalSorbonne UniversityParis 75013France

Dear Editor,Acute subhyaloid hemorrhage causes sudden profound vision loss in the macular *** is a term that designates ocular hemorrhages lying between the posterior hyaloid membrane and the retina,often presented as a‘boat’or‘D’shaped hemorrhage[1].The development of optical coherence tomography(OCT)had enabled detailed differentiation of subhyaloid hemorrhage,allowing the term sub-internal limiting membrane(ILM)hemorrhage to be applied in selected cases where the blood is located beneath the ILM[1-2].However,it is not always possible to distinguish the location of the hemorrhage due to the attenuation of the retinal structures on ***,subhyaloid hemorrhage remains a widely used term,implying both subhyaloid and sub-ILM hemorrhage[1].

关键词： hemorrhage Acute Traumatic

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Femoral neck stress fractures after trampoline exercise:A case report

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World Journal of Clinical Cases 2021年第18期9卷 4783-4788页

作者： dae Cheol Nam Sun Chul hwang Eun Chang Lee Myung-Geun Song Jun-Il yoo Department of Orthopaedic Surgery Gyeongsang National University School of MedicineJinju 52727South Korea Department of Orthopaedic Surgery and Institute of Health Sciences Gyeongsang National University School of Medicine and Gyeongsang National University HospitalJinju 52727South Korea

BACKGROUND Femoral neck stress fractures(FNSFs)are commonly found in long-distance running *** FNSFs,early diagnosis and proper treatment are *** objective of this study was to report FNSFs that occurred after excessive exercise using trampoline in middle-aged *** SUMMARY The patient was a 43-year-old woman who exercised jumping on a trampoline for 6 wk for 1-3 h a day to *** includes repeated flexion-extension of the hip *** patient was admitted to the hospital due to sudden bilateral groin pain that occurred suddenly during a trampoline *** magnetic resonance imaging(MRI)revealed bilateral *** 2 wk of follow-up with conservative treatment,the pain slightly ***,it did not disappear *** was determined that it was difficult to control symptoms only by conservation ***,closed reduction and internal fixation using a cannulated screw were performed for the more painful left hip *** operation,the pain was *** using crutches was *** MRI showed that the right femoral head signal was decreased compared to the left femoral head ***,nonsteroidal anti-inflammatory drug and conservative treatment were *** In middle-aged people,excessive trampoline exercise can repeat hip flexion and extension for a short period of time,leading to FNSFs.

关键词： Trampoline exercise Femoral neck stress fracture Neck Fracture Case report

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Entacapone promotes hippocampal neurogenesis in mice

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Neural Regeneration Research 2021年第6期16卷 1005-1010页

作者： dae Young yoo Hyo Young Jung Woosuk Kim Kyu Ri Hahn Hyun Jung Kwon Sung Min Nam Jin Young Chung Yeo Sung yoon dae Won Kim In Koo hwang Department of Anatomy and Cell Biology College of Veterinary Medicineand Research Institute for Veterinary ScienceSeoul National UniversitySeoulSouth Korea Department of Anatomy College of MedicineSoonchunhyang UniversityCheonanSouth Korea Department of Biomedical Sciences and Research Institute for Bioscience and BiotechnologyHallym UniversityChuncheonSouth Korea Department of Biochemistry and Molecular Biology Research Institute of Oral SciencesCollege of DentistryGangneung-Wonju National UniversityGangneungSouth Korea Department of Anatomy College of Veterinary MedicineKonkuk UniversitySeoulSouth Korea Department of Veterinary Internal Medicine and Geriatrics College of Veterinary MedicineKangwon National UniversityChuncheonSouth Korea

Entacapone,a catechol-O-methyltransferase inhibitor,can strengthen the therapeutic effects of levodopa on the treatment of Parkinson’s ***,few studies are reported on whether entacapone can affect hippocampal neurogenesis in *** investigate the effects of entacapone,a modulator of dopamine,on proliferating cells and immature neurons in the mouse hippocampal dentate gyrus,60 mice(7 weeks old)were randomly divided into a vehicle-treated group and the groups treated with 10,50,or 200 mg/kg *** results showed that 50 and 200 mg/kg entacapone increased the exploration time for novel object *** staining results revealed that after entacapone treatment,the numbers of Ki67-positive proliferating cells,doublecortin-positive immature neurons,and phosphorylated cAMP response element-binding protein(pCREB)-positive cells were significantly *** blot analysis results revealed that treatment with tyrosine kinase receptor B(TrkB)receptor antagonist significantly decreased the exploration time for novel object recognition and inhibited the expression of phosphorylated TrkB and brain-derived neurotrophic factor(BDNF).Entacapone treatment antagonized the effects of TrkB receptor *** results suggest that entacapone treatment promoted hippocampal neurogenesis and improved memory function through activating the BDNF-TrkB-pCREB *** study was approved by the Institutional Animal Care and Use Committee of Seoul National University(approval ***-130730-1)on February 24,2014.

关键词： brain-derived neurotrophic factor entacapone hippocampus neurogenesis neurotrophic factor phosphorylated cAMP response element-binding protein tyrosine kinase receptor B receptor

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N,P co-doped 3D porous carbon with self-assembled morphological control via template-free method for potassiumion battery anodes

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Rare Metals 2024年第9期43卷 4243-4252页

作者： Jeehoon Yu dae Kyom Kim Hong Geun Oh Seung-Keun Park Youngjae yoo Department of Advanced Materials Engineering Chung-Ang UniversityAnseong-si 17546Republic of Korea

The larger ionic radius of potassium ions than that of lithium ions significantly limits the accomplishment of rapid diffusion kinetics in graphite electrodes for potassium-ion batteries(PIBs),resulting in comparatively poor rate performance and cycle ***,we report a high-rate performance and cycling stability amorphous carbon electrode achieved through nitrogen and phosphorous *** as-prepared N,P co-doped carbon electrodes have distinct 3D structures with large surface areas,hierarchical pore architectures,and increased interlayer spaces resulting from the direct pyrolysis of supramolecular self-assembled aggregates without *** obtained electrode N3P1 exhibits a reversible specific capacity of 258 m Ah·g^(-1)at a current density of 0.1A·g^(-1)and a good long-term cycle performance(96.1%capacity retention after 800 cycles at 0.5 A·g^(-1)).Kinetic investigations show that the N3P1 electrode with the welldeveloped porous structure and large number of surface defects exhibits capacitive-driven behavior at all scan rates,which may be attributed by N and P ***-situ transmission electron microscopy analyses in the fully discharged and charged states demonstrate structural stability and reversibility owing to the expanded interlayer *** suggested synthesis approach is simple and effective for producing heteroatom-doped carbon materials for PIBs and other advanced electrochemical energy storage materials.

关键词： Amorphous carbons 3D porous structures Nitrogen and phosphorous co-doping Potassium-ion batteries

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Materials and devices for flexible and stretchable photodetectors and light-emitting diodes

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Nano Research 2021年第9期14卷 2919-2937页

作者： Jun-Kyul Song Min Sung Kim Seungwon yoo Ja Hoon Koo dae-Hyeong Kim Center for Nanoparticle Research Institute for Basic Science(IBS)Seoul 08826Republic of Korea School of Chemical and Biological Engineering and Institute of Chemical Processes Seoul National UniversitySeoul 08826Republic of Korea Interdisciplinary Program for Bioengineering Seoul National UniversitySeoul 08826Republic of Korea Department of Materials Science and Engineering Seoul National UniversitySeoul 08826Republic of Korea

Recently,significant efforts have been directed at overcoming the limitations of conventional rigid optoelectronic devices,particularly their poor mechanical stability under bending,folding,and stretching *** of major approaches for rendering optoelectronic devices mechanically deformable is to replace the conventional electronic/optoelectronic materials with functional nanomaterials or organic materials that are intrinsically flexible/***,advanced device designs and unconventional fabrication methods have also contributed to the development of soft optoelectronic ***,new devices such as bio-inspired curved image sensors,wearable light emitting devices,and deformable bio-integrated optoelectronic devices have been *** this review,recent progress in the development of soft optoelectronic materials and devices is ***,various materials such as nanomaterials,organic materials,and their hybrids that are suitable for developing deformable photodetectors,are ***,the nanomaterials and organic/polymeric materials that are applicable in deformable light-emitting diodes are ***,representative system-level applications of flexible and stretchable photodetectors and light-emitting diodes are reviewed,and future prospects are discussed.

关键词： nanomaterial organic material photodetector light-emitting diode flexible optoelectronics stretchable optoelectronics

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Self-Assembled Wire Arrays and ITO Contacts for Silicon Nanowire Solar Cell Applications

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Chinese Physics Letters 2011年第3期28卷 132-135页

作者： YANG Cheng ZHANG Gang LEE dae-Young LI Hua-Min LIM Young-dae yoo Won Jong PARK Young-Jun KIM Jong-Min Sungkyunkwan University SKKU Advanced Institute of Nano Technology300 Cheoncheon-dongJangan-guSuwon 440-746Korea Samsung Electronics Co.Ltd. San 14-1 Nongseo-dongGiheung-guYongin 446-712Korea

Self-assembly of silicon nanowire(SiNW)arrays is studied using SF_(6)/0_(2)plasma *** self-assembly method can be applied to single-and poly-crystalline Si *** conditions can control the length and diameter of the SiNW *** reflectance of the wire arrays over the wavelength range 200-1100nm is *** conducting transparent indium-tin-oxide(ITO)electrode can be fully coated on the self-assembled SiNW arrays by *** ITO-coated SiNW solar cells show the same low surface light reflectance and a higher carrier collection efficiency than SiNW solar cells without ITO *** efficiency enhancement of around 3 times for ITO coated SiNW solar cells is demonstrated via experiments.

关键词： reflectance Solar transparent

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