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Smart Grid and Renewable Energy 2017年第5期8卷 129-144页

作者： Akira Nishimura Satoshi Kitagawa Masafumi Hirota Mohan Lal Kolhe Division of Mechanical Engineering Graduate School of Engineering Mie University Tsu Japan Faculty of Engineering and Science University of Agder Kristiansand Norway

A building integrated energy system (photovoltaic (PV) and fuel cell (FC)) is proposed for assessment of the energy self-sufficiency rate in five cities of Mie prefecture in Japan. In this work, it is considered that the electricity requirement of the building is provided by the building integrated photovoltaic (BIPV) system and the gap between the energy demand and BIPV supply is fulfilled by the FC. The FC is powered by the electrolytic H2 produced from the surplus power of PV. A design study of using the proposed system in five cities in Mie prefecture, which are in center part of Japan, has been performed. It has been observed that the monthly power production from BIPV is higher in spring and summer, while it is lower in autumn and winter at all considered locations. The self-sufficiency rate of the FC system is higher with decreasing households’ number and it has been observed that the 12 households are more suitable for full cover of the electricity demand by the combined system of PV and FC. The relationship between the households’ number and self-sufficiency rate of the FC system per solar PV installation area can be expressed by exponential curve. The coefficient of the exponential curve can predict the suitable city for the BIPV system with FC system utilizing electrolytic H2 generated by using excess energy from the PV system.

关键词： Smart Building photovoltaics H2 Produced by Water Electrolysis Fuel Cell Self-Sufficiency Rate

Assessment on Energy Self-Sufficiency Rate for Building Integrated photovoltaics and Fuel Cell System in Japan

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Smart Grid and Renewable Energy 2017年第6期8卷 195-211页

作者： Akira Nishimura Satoshi Kitagawa Masafumi Hirota Eric Hu Division of Mechanical Engineering Graduate School of Engineering Mie University Tsu Japan School of Mechanical Engineering The University of Adelaide Adelaide Australia

A building integrated photovoltaic (PV) and fuel cell (FC) system is proposed for assessment of the energy self-sufficiency rate in a city in Japan. The electricity consumed in the building is mainly supplied by solar panels, while the gap between the energy demand and supply is solved by the FC that is powered by the H2 produced by water electrolysis with surplus power of PV. A desktop case study of using the proposed system in Tsu city which is located in central part of Japan, has been conducted. The results found that the self-sufficiency rates of PV system to electricity demand of households (RPV) during the daytime in April and July are higher than those in January and October. The results also reveal that the self-sufficiency rate of FC system to the electricity demand (RFC) is 15% - 38% for the day when the mean amount of horizontal solar radiation is obtained in January, April, July and October. In addition, it is found the optimum tilt angle of solar panel installed on the roof of the buildings should be 0 degree, i.e., placed horizontally.

关键词： Smart Building photovoltaics H2 Produced by Water Electrolysis Fuel Cell Self-Sufficiency Rate

The Systematic Study of the Feasible photovoltaics in Eastern Kentucky

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Journal of Electronic Research and Application 2018年第1期2卷 22-28页

作者： Elliot Kusiak Adam Stanley Sanghyun Lee Department of Electronics and Computer Engineering and Technology Indiana State University 301 Myers Technology Center 650 Cherry St.Terre HauteIN 47809 USA

photovoltaics(PV-also called solar photovoltaic devices)are used to harness the power of the sun via the electronic process that occurs within semiconductor *** solar energy is absorbed by the cells,which causes the electrons to break away from their atoms,allowing them to flow within the material to produce *** electricity will become the renewable energy for Kentucky,as the generation of coal will but come to a stop within the near *** Denmark who is running on 100%renewable generation we must stride to become fully operational on *** the present work,we systematically studied about renewable energy resources,in particular,solar energy for the application of photovoltaic panels in Eastern *** analyzing data from our PV cells at Morehead State University designed to follow the direction of the sun for optimized output and by incorporating MPPT charge controllers,we have constructed a maximum power algorithm that performs best for the *** these,measurements of daily electricity production in comparison to the average power needed for household use has validated our *** the advancements in solar cell technology what was once impossible is now reality,as solar power can easily power this region based on our *** this,being a prime location we can now push to enable the advancement of renewable energy production and become less dependent on fossil fuels,thus creating an infrastructure that will run off solar power.

关键词： photovoltaics solar power renewable energy morehead Eastern Kentucky

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photovoltaics 充电伞

科技创业 2010年第1期 28-28页

由有机聚合物取代结晶硅制成的光伏电池使得太阳能的价格便宜很多。去年,总部设在马萨诸塞州洛厄尔(Lowell)市的新创公司Konarka,开建了一家制造这种太阳能电池板的工厂。这种电池板的制造方法很灵

关键词：结晶硅电池板 photovoltaics 制造方法光伏电池

Recent progress in hydrogen:From solar to solar cell

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Journal of Materials Science & Technology 2024年第9期176卷 236-257页

作者： Yanlin Li Zhu Ma Shanyue Hou Qianyu Liu Guangyuan Yan Xiaoshan Li Tangjie Yu Zhuowei Du Junbo Yang Yi Chen Wei You Qiang Yang Yan Xiang Shufang Tang Xuelin Yue Meng Zhang Wenfeng Zhang Jian Yu Yuelong Huang Jiale Xie Chun Tang Yaohua Mai Kuan Sun School of New Energy and Materials Southwest Petroleum University(SWPU)Chengdu 610500China Institute of New Energy Technology College of Information Science and TechnologyJinan UniversityGuangzhou 510632China Key Laboratory of Low-grade Energy Utilization Technologies and Systems(MoE) School of Energy and Power EngineeringChongqing UniversityChongqing 400044China

Hydrogen,meeting the requirements of sustainable development,is regarded as the ultimate energy in the 21st *** to the inexhaustible and feasible of solar energy,solar water splitting is an immensely promising strategy for environmental-friendly hydrogen production,which not only overcomes the fluctuation and intermittency but also contributes to achieving the mission of global“Carbon Neutrality and Carbon Peaking”.However,there is still a lack of a comprehensive overview focusing on hydrogen progress with a discussion of development from solar energy to solar ***,we emphasize several solar-to-hydrogen pathways from the basic concepts and principles and focus on photovoltaic-electrolysis and photoelectrochemical/photovoltaic systems,which have achieved solar-to-hydrogen(STH)efficiency of over 10%and have extremely promising for large-scale *** addition,we summarize the challenges and opportunities faced in this field including configuration design,electrode materials,and performance ***,perspectives on the potential commercial application and scientific research for the further development of solar-to-hydrogen are analyzed and presented.

关键词： Hydrogen photovoltaics Catalysis STH efficiency Integrated module

Vacuum-free lamination via controlled polymer adhesion for selective photogeneration and photodetection

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Carbon Energy 2024年第7期6卷 205-218页

作者： Min Soo Kim Jihyun Lim Woongsik Jang Dong Hwan Wang Department of Intelligent Semiconductor Engineering Chung-Ang UniversitySeoulRepublic of Korea School of Integrative Engineering Chung-Ang UniversitySeoulRepublic of Korea

This study attempts to develop a reproducible thin-film formation technique called vacuum-free(VF)lamination,which transfers thin films using elastomeric polymer-based laminating ***,by controlling the interface characteristics of the mediator based on the work of adhesion,VF lamination is successfully performed for various thicknesses(from 20 to 240 nm)of a conjugated photoactive material composed of poly[(2,6-(4,8-bis(5-(2-ethylhexyl-3-fluoro)thiophen-2-yl)-benzo[1,2-b:4,5-bʹ]dithiophene))-alt-(5,5-(1ʹ,3ʹ-di-2-thienyl-5ʹ,7ʹ-bis(2-ethylhexyl)benzo[1ʹ,2ʹ-c:4ʹ,5ʹ-cʹ]dithiophene-4,8-dione)](a polymer donor)and 2,2ʹ-((2Z,2ʹZ)-((12,13-bis(2-butyloctyl)-3,9-diundecyl-12,13-dihydro-[1,2,5]thiadiazolo[3,4-e]thieno[2ʹʹ,3ʹʹ:4ʹ,5ʹ]thieno[2ʹ,3ʹ:4,5]pyrrolo[3,2-g]thieno[2ʹ,3ʹ:4,5]thieno[3,2-b]indole-2,10-diyl)bis(methanylylidene))bis(5,6-difluoro-3-oxo-2,3-dihydro-1H-indene-2,1-diylidene))dimalononitrile(a nonfullerene acceptor).Interestingly,the organic photovoltaic and photodetecting applications,prepared by the VF lamination process,showed superior performance compared to those of devices prepared by conventional *** is due to the overturned surface morphology,which led to enhanced charge transport ability and blocking of the externally injected ***,the reproducible VF lamination process,exploiting an adhesion-based elastomeric polymer mediator,is a promising thin-film formation technique for developing efficient next-generation organic optoelectronic materials consistent with the solution process.

关键词： conjugated nonfullerene acceptor photodetectors photovoltaics polymer vacuum-free lamination

Adoption of wide-bandgap microcrystalline silicon oxide and dual buffers for semitransparent solar cells in building-integrated photovoltaic window system

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Journal of Materials Science & Technology 2019年第8期35卷 1563-1569页

作者： Johwa Yang Hyunjin Jo Soo-Won Choi Dong-Won Kang Jung-Dae Kwon Surface Technology Division Korea Institute of Materials ScienceChangwon 641-831 Republic of Korea School of Energy Systems Engineering Chung-Ang UniversitySeoul 06974 Republic of Korea

We focused on developing penetration-type semitransparent thin-film solar cells(STSCs) using hydrogenated amorphous Si(a-Si:H) for a building-integrated photovoltaic(BIPV) window system. Instead of conventional p-type a-Si:H, p-type hydrogenated microcrystalline Si oxide(p-μc-SiOx:H) was introduced for a wide-bandgap and conductive window layer. For these purposes, we tuned the CO2/SiH4 flow ratio(R) during p-μc-SiOx:H deposition. The film crystallinity decreased from 50% to 13% as R increased from 0.2 to 1.2. At the optimized R of 0.6, the quantum efficiency was improved under short wavelengths by the suppression of p-type layer parasitic absorption. The series resistance was well controlled to avoid fill factor loss at R = 0.6. Furthermore, we introduced dual buffers comprising p-a-SiOx:H/i-a-Si:H at the p/i interface to alleviate interfacial energy-band mismatch. The a-Si:H STSCs with the suggested window and dual buffers showed improvements in transmittance and efficiency from 22.9% to 29.3% and from 4.62% to 6.41%, respectively, compared to the STSC using a pristine p-a-Si:H window.

关键词： Microcrystalline silicon oxide Building-integrated photovoltaics Semitransparent Thin film Solar cells

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A Furan-Substituted Polymeric Hole-Transporting Material for Energy Level Regulation and Less Planarity in Colloidal Quantum Dot Solar Cells

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Energy & Environmental Materials 2023年第5期6卷 340-346页

作者： Jun woo Lee Duck Hoon Lee Younghoon Kim Jin Young Park Hyung Ryul You Taiho Park Minjun Kim Jongmin Choi Department of Chemical Engineering Pohang University of Science and Technology(POSTECH)77 Cheongam-RoNam-GuPohang Gyeongbuk 37673Korea Department of Chemical and Environmental Engineering Yale UniversityNew Haven CT 06511USA Department of Energy Science and Engineering Daegu Gyeongbuk Institute of Science and Technology(DGIST)Daegu 42988Korea Department of Chemistry Kookmin UniversitySeoul 02707Korea RIKEN Center for Emergent Matter Science(CEMS) 2-1 HirosawaWako Saitama 351-0198Japan

For efficient colloidal quantum dot(CQD)solar cells(CQD-SCs),thiol-passivated p-type CQDs are generally used as a hole-transporting material(HTM);however,there are issues with the control of optoelectrical properties,low thiol passivation rate,and poor morphology with a power conversion efficiency(PCE)of approximately 11%.Although polymeric HTMs have been introduced to address these issues,maximizing efficiency and achieving green-solvent processability and thermal stability for commercialization is ***,we synthesize a novel benzodifuran(BDF)-based HTM(asy-ranPBTBDF)showing an electron-deficient state,low steric hindrance,and low planarity compared to those of a typical benzodithiophene(BDT)-based HTM(asy-ranPBTBDT).BDF properties lead to deep high occupied molecular orbital(HOMO)levels,closeπ-πstacking,excellent solubility,and amorphous properties related to efficiency,green-solvent processability,and thermal *** these benefits,the asy-ranPBTBDF-based CQD-SC showed enhanced open-circuit voltage(Voc)(0.65 V)and PCE(13.29%)compared to those of the asy-ranPBTBDT-based device(0.63 V and 12.22%)in toxic processes with *** asy-ranPBTBDF-based CQD-SC showed a PCE of 12.51%in a green-solvent process with 2-methylanisole and improved thermal stability at 80℃(83.8%retaining after 24 h)owing to less lateral crystallization than the asy-ranPBTBDT-based device(60.8%retaining after 24 h).

关键词： colloidal quantum dot green-solvent photovoltaics semiconducting polymers stability

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Nitrogen-doped graphene quantum dots: Optical properties modification and photovoltaic applications

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Nano Research 2019年第5期12卷 1041-1047页

作者： Md Tanvir Hasan Roberto Gonzalez-Rodriguez Conor Ryan Kristof Pota Kayla Green Jeffery L.Coffer Anton V.Naumov Department of Physics and Astronomy Texas Christian UniversityTCU Box 298840Fort WorthTexas 76129USA Department cf Chemistry and Eiochemistry Texas Christian UniversityTCU Box 298860Fort WorthTexas 76129USA

In this work,we utilize a bottom-up approach to synthesize nitrogen self-doped graphene quantum dots (NGQDs) from a single glucosamine precursor via an eco-friendly microwave-assisted hydrothermal *** and optical properties of as-produced NGQDs are further modified using controlled ozone ***-treated NGQDs (Oz-NGQDs) are reduced in size to 5.5 nm with clear changes in the lattice structure and/D//G Raman ratios due to the introduction/alteration of oxygen-containing functional groups detected by Fourier-transform infrared (FTIR) spectrometer and further verified by energy dispersive X-ray spectroscopy (EDX) showing increased atomic/weight percentage of oxygen *** with structural modifications,GQDs experience decrease in ultraviolet-visible (UV-vis) absorption coupled with progressive enhancement of visible (up to 16 min treatment) and near-infrared (NIR)(up to 45 min treatment) *** allows fine-tuning optical properties of NGQDs for solar cell applications yielding controlled emission increase,while controlled emission quenching was achieved by either blue laser or thermal *** Oz-NGQDs were further used to form a photoactive layer of solar calls with a maximum efficiency of 2.64% providing a 6-fold enhancement over untreated NGQD devices and a 3-fold increase in fill factor/current *** study suggests simple routes to alter and optimize optical properties of scalably produced NGQDs to boost the photovoltaic performance of solar cells.

关键词： nitrogen-doped graphene quantum dots ozone treatment optical properties photovoltaics solar cells

Temperature-dependent barrier height inhomogeneities in PTB7:PC71BM-based organic solar cells

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Chinese Physics B 2020年第9期29卷 609-614页

作者： Brahim Ait Ali Reda Moubah Abdelkader Boulezhar Hassan Lassri LERDyS Faculty of Science Ain ChockHassan II University of CasablancaMorocco LPMMAT Faculty of Science Ain ChockHassan II University of CasablancaMorocco

We report on the temperature-dependent Schottky barrier in organic solar cells based on PTB7:*** ideality factor is found to increase with temperature decreasing,which is explained by a model in which the solar cell is taken as Schottky barrier ***,the dark current in the device originates from the thermally emitted electrons across the Schottky *** fittings obtained with the thermal emission theory are systematically studied at different *** is concluded that the blend/Ca/Al interface presents great inhomogeneity,which can be described by 2 sets of Gaussian distributions with large zero bias standard *** the decrease of temperature,electrons favor going across the Schottky barrier patches with lower barrier height and as a consequence the ideally factor significantly increases at low temperature.

关键词： organic materials photovoltaics Schottky barrier barrier height

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