检索结果-南通市图书馆

Optimization of Ethylene Glycol Doped PEDOT:PSS Transparent Electrodes for Flexible Organic solar Cells by Drop-coating Method

引用

Chinese Journal of Polymer Science 2019年第8期37卷 760-766页

作者： Hui-Qin Cui Rui-Xiang Peng Wei Song Jian-Feng Zhang Jia-Ming Huang Li-Qiang Zhu Zi-Yi Ge Faculty of Materials Science and Chemical Engineering Ningbo University Ningbo 315211 China Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences Ningbo 315201 China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing 100049 China

Fabrication of flexible transparent electrodes(FTEs) is one of the core technologies in the field of flexible electronics. Among multiple choices of FTEs, poly(3,4-ethylenedioxythiophene):poly(styrene-sulfonic acid)(PEDOT:PSS) has shown its promising application in roll-to-roll manufacturing. A simple yet effective method for substantially boosting the conductivity of these conducting polymer films without causing large-domain aggregations is by adding ethylene glycol(EG) as dopant. Herein, we investigated in detail the effects of the secondary solvent of ethylene glycol(EG) on the optical and electrical characteristics of PEDOT:PSS films. The modified PEDOT:PSS FTEs were deposited using drop-coating techniques as it had greater compatibility for large-area samples than the conventional spin-coating method did. The 6% EG-doped PEDOT:PSS FTE via drop-coating method achieved a high figure of merit(FoM) value of 47.24 and the devices fabricated using the optimal PEDOT:PSS FTE yielded a high power conversion efficiency(PCE) of 8.89%, mostly attributed to the modified PEDOT:PSS films that had excellent optical and electrical characteristics with low surface roughness. These results suggested that EG-doping could effectively boost the conductivity of PEDOT:PSS films and that the modified PEDOT:PSS FTE is suitable for roll-to-roll manufacturing in the future.

关键词： PEDOT:PSS Doping Conductivity Flexible transparent electrodes Organic solar cells

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Cold Storage Capacity for solar Air-Conditioning in Office Buildings in Different Climates

引用

Journal of Thermal Science 2019年第6期28卷 1195-1204页

作者： SUN Zhifeng ZHAO Yaohua XU Wei WANG Dongxu LI Huiyong ZHANG Xinyu LI Huai LI Yang College of Architecture and Civil Engineering Beijing University of TechnologyBeijing 100124China Institute of Building Environment and Energy China Academy of Building ResearchBeijing 100013China School of Civil and Resources Engineering University of Science and Technology BeijingBeijing 100083China Second Design Institute Beijing Institute of Architectural DesignBeijing 100045China

The building sector accounts for more than 40% of the global energy consumption. This consumption may be lowered by reducing building energy requirements and using renewable energy in building energy supply systems. solar air-conditioning systems(SACS) are a promising solution for the reduction of conventional energy in buildings. The storage, especially the cold storage, plays an important role in SACS for unstable solar irradiation. In this paper, we took the absorption refrigerating unit as an example, and the solar air-conditioning system of an office building in Beijing was simulated. The accuracy of this model was verified by comparing with the SACS operation data. Moreover, based on the simulation data, the cold storage capacity of the solar air-conditioning system in different climatic regions was studied. The cold storage capacities of SACS in 20 cities distributed in different climate regions were studied systematically. The results simulated by our proposed model will be beneficial to the SACS design, and will enlarge the application of SACS.

关键词： office building solar air-conditioning system cold storage capacity TRNSYS

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Effect of imidazole based polymer blend electrolytes for dye-sensitized solar cells in energy harvesting window glass applications

引用

Chinese Journal of Chemical Engineering 2019年第11期27卷 2807-2814页

作者： K.M.Manikandan A.Yelilarasi S.S.Saravanakumar P.Senthamaraikannan Anish Khan Abdullah M.Asiri Department of Physics Kamaraj College of Engineering and TechnologyK.VellakulamVirudhunagar625701 MaduraiTamil NaduIndia Department of Mechanical Engineering Kamaraj College of Engineering and TechnologyK.VellakulamVirudhunagar625701 MaduraiTamil NaduIndia Chemistry Department Faculty of ScienceKing Abdulaziz UniversityJeddah 21589Saudi Arabia Center of Excellence for Advanced Materials Research King Abdulaziz UniversityJeddah 21589P.O.Box 80203Saudi Arabia

The exploration of polymer electrolyte in the field of dye sensitized solar cell(DSSC) can contribute to increase the invention of renewable energy applications. In the present work, the influence of imidazole on the poly(vinylidene fluoride)(PVDF)–poly(methyl methacrylate)(PMMA)–Ethylene carbonate(EC)–KI–I2 polymer blend electrolytes has been evaluated. The different weight percentages of imidazole added into polymer blend electrolytes have been prepared by solution casting. The prepared films were characterized by Fourier transform infrared spectroscopy(FTIR), X-ray diffraction(XRD), thermogravimetric analysis(TGA), UV–visible spectra, photoluminescence spectra and impedance spectroscopy. The surface roughness texture of the film was analyzed by atomic force microscopy(AFM). The ionic conductivity of the optimized polymer blend electrolyte was determined by impedance measurement, which is 1.95 × 10-3 S·cm-1 at room temperature. The polymer electrolyte containing 40 wt% of imidazole content exhibits the highest photo-conversion efficiency of 3.04%under the illumination of 100 m W·cm-2. Moreover, a considerable enhancement in the stability of the DSSC device was demonstrated.

关键词： Polymer blend electrolyte Imidazole Dye-sensitized solar cell Surface roughness Ionic conductivity

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Radiative heat transfer and thermal characteristics of Fe-based oxides coated SiC and Alumina RPC structures as integrated solar thermochemical reactor

引用

Science China(Technological Sciences) 2018年第12期61卷 1788-1801页

作者： GUENE LOUGOU Bachirou SHUAI Yong PAN RuMing CHAFFA Gédéon AHOUANNOU Clément ZHANG Hao TAN HePing Key Laboratory of Aerospace Thermophysics of Ministry of Industry and Information Technology Harbin Institute of Technology School of Energy Science and Engineering Harbin Institute of Technology Laboratory of Energetics and Applied Mechanics (LEMA) Polytechnic College of Abomey-Calavi Abomey-Calavi University

This paper investigated radiative heat transfer and thermal characteristics of Fe-based oxides coated SiC and Alumina reticulated porous ceramic structures as integrated solar thermochemical reactor.High-flux solar radiation absorption and axial temperature distribution in the ceramic foams reactor were analyzed by adopting surface-to-surface radiation model coupled to the P1approximation for radiation heat transfer.The radiative heat transfer and thermal characteristics of different foam-type RPC structures,including SiC,CeO_2,FeAl_2O_4,NiFeAlO_4,Fe_3O_4/SiC,and NiFe_2O_4/SiC were evaluated.The mass flow rate and foam structural parameters,including the permeability,pore mean cell size,and extinction coefficients have significantly affected the axial temperature distribution,pressure drop,heat transfer,and fluid flow.Integrated porous structure to the solar receiver could maximize the incorporation of redox powder in the reacting medium,lower the pressure drop,and enhance the thermal performance of the thermochemical reacting system.SiC structure was the candidate materials in the case where more heat flux and high axial temperature distribution is needed.However,Fe-based oxide coated Al_2O_3structure could be considered regarding the heat transfer enhancement along with the catalyst activity of oxygen carriers for solar thermochemical reacting system performance.

关键词： solar thermochemical reactor reticulated porous ceramics heat transfer and fluid flow pore mean cell size permeability and pressure drop

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Gel electrolytes containing several kinds of particles used in quasi-solid-state dye-sensitized solar cells

引用

Rare Metals 2006年第Z1期25卷 201-206页

作者： GENG Yi SUN Xiaodan CAI Qiang SHI Yantao LI Hengde Laboratory of Advanced Materials Department of Materials Science & Engineering Tsinghua University Beijing 100084 China Laboratory of Advanced Materials Department of Materials Science & Engineering Tsinghua University Beijing 100084 China Laboratory of Advanced Materials Department of Materials Science & Engineering Tsinghua University Beijing 100084 China Laboratory of Advanced Materials Department of Materials Science & Engineering Tsinghua University Beijing 100084 China Laboratory of Advanced Materials Department of Materials Science & Engineering Tsinghua University Beijing 100084 China

Composite gel electrolytes containing several kinds of particles used as the quasi-solid-state electrolytes in dye-sensitized solar cells (DSSCs) were reported. Mesoporous particles (MCM-41) with unique structures composed of ordered nanochannels were served as a new kind of gelator for quasi-solid-state electrolytes. MCM-41, hydrophobic fumed silica Aerosil R972 and TiO2 nanopatricles P25 were dispersed into gel electrolytes respectively. The solar energy-to-electricity conversion efficiency of these cells is 4.65%, 6.85% and 5.05% respectively under 30 mW·cm-2 illumination. The preparation methods and the particles sizes exert an influence on the performance of corresponding solar cells. Owing to unique pore structures and high specific BET surface area, mesoporous silica MCM-41 was expected to have the potential to afford conducting nanochannels for redox couple diffusion.

关键词： dye-sensitized solar cells nanocomposite gel electrolyte mesoporous nanoparticle

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Highly efficient perovskite solar cells based on symmetric hole transport material constructed with indaceno[1,2-b:5,6-b’]dithiophene core building block

引用

Journal of Energy Chemistry 2020年第4期29卷 98-103页

作者： Cheng Wu Cheng Chen Li Tao Xingdong Ding Mengmeng Zheng Hongping Li Gongqiang Li Hongfei Lu Ming Cheng Institute for Energy Research Key Laboratory of ZhenjiangJiangsu UniversityZhenjiang 212013JiangsuChina School of Environmental and Chemical Engineering Jiangsu University of Science and TechnologyZhenjiang 212003JiangsuChina Key Laboratory of Flexible Electronic(KLOFE)&Institute of Advanced Materials(IAM) Nanjing Tech University(NanjingTech)Nanjing 211816JiangsuChina

Two novel hole transport materials (HTMs) with indaceno[1,2-b:5,6-b’]dithiophene (IDT) as core building blocks,termed IDT1 and IDT2,were designed and synthesized.The side alkyl chains were introduced to regulate and control the morphology and stacking behavior of HTMs,and the peripheral triarylamine arms were introduced to adjust the energy levels and to facilitate efficient hole transport.Applied in mesoporous structured perovskite solar cells (PSCs),HTM IDT1 achieved higher power conversion efficiency (PCE,19.55%) and better stability than Spiro-OMeTAD (19.25%) and IDT2 (15.77%) based PSC.These results suggest the potential of IDTl as a promising HTM for PSCs.

关键词： Perovskite solar cell Hole transport material Mesoporous Indaceno[1,2-b:5,6-b']dithiophene

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Novel two-step CdS deposition strategy to improve the performance of Cu2ZnSn(S,Se)4 solar cell

引用

Journal of Energy Chemistry 2020年第3期29卷 77-82页

作者： Lifang Teng Junye Tong Gang Wang Lingling Wang Liping Chen Shaotong Wang Yinglin Wang Daocheng Pan Xintong Zhang Yichun Liu Center for Advanced Optoelectronic Functional Materials Research and Key Laboratory of UV-Emitting Materials and Technology of Ministry of EducationNortheast Normal UniversityChangchun 130024JilinChina State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022JilinChina

Kesterite Cu2ZnSn(S,Se)4(CZTSSe)solar cells have drawn worldwide attention for their promising photovoltaics performance and earth-abundant element composition,yet the record efficiency of this type of device is still far lower than its theoretical conversion efficiency.Undesirable band alignment and severe non-radiative recombination at CZTSSe/CdS heterojunction interfaces are the major causes limiting the current/voltage output and overall device performance.Herein,we propose a novel two-step CdS deposition strategy to improve the quality of CZTSSe/CdS heterojunction interface and thereby improve the performance of CZTSSe solar cell.The two-step strategy includes firstly pre-deposits CdS thin layer on CZTSSe absorber layer by chemical bath deposition(CBD),followed with a mild heat treatment to facilitate element inter-diffusion,and secondly deposits an appropriate thickness of CdS layer by CBD to cover the whole surface of pre-deposited CdS and CZTSSe layers.The solar energy conversion efficiency of CZTSSe solar cells with two-step deposited CdS layer approaches to 8.76%(with an active area of about 0.19 cm2),which shows an encouraging improvement of over 87.98%or 30.16%compared to the devices with traditional CBD-deposited CdS layer without and with the mild annealing process,respectively.The performance enhancement by the two-step CdS deposition is attributed to the formation of more favorable band alignment at CZTSSe/CdS interface as well as the effective decrease in interfacial recombination paths on the basis of material and device characterizations.The two-step CdS deposition strategy is simple but effective,and should have large room to improve the quality of CZTSSe/CdS heterojunction interface and further lift up the conversion efficiency of CZTSSe solar cells.

关键词： Kesterite solar cell CdS Two-step deposition Heterojunction interface

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

High isotropic dispiro structure hole transporting materials for planar perovskite solar cells

引用

Journal of Energy Chemistry 2019年第5期28卷 152-158页

作者： Bin Cai Xichuan Yang Haoxin Wang Weihan Wang Jincheng An Licheng Sun State Key Laboratory of Fine Chemicals Institute of Artificial PhotosynthesisDUT-KTH Joint Education and Research Center on Molecular DevicesDalian University of Technology (DUT)Dalian 116024LiaoningChina Department of Chemistry School of Chemical Science and EngineeringKTH Royal Institute of Technology10044 StockholmSweden

Two novel fluorene-based hole transporting materials (HTMs) were synthesized to be used in perovskite solar cells (PSCs). C102 was designed based on C101 by simply linking the two carb on-carbon single bonds to compose a "dispiro" structure. Their typically similar structures cause them sharing almost the same energy levels. However, their photovoltaic performances are quite different due to the small variations. The PSC that contained the "dispiro" structure, C102, reached a power conversion efficiency (PCE) of 17.4%, while the device contained C101, obtained a lower PCE of 15.5%. Electrochemical properties and Photovoltaic characterization of the two materials have been investigated to explain the result. It is shown that C102 has a stronger ability to transport holes and resist the charge recombination. Thus, the dispiro structure should be more appropriate being used as HTM in PSCs.

关键词： Dispiro Hole transporting materials Planar perovskite solar cells

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Performance analysis of solar absorption-subcooled compression hybrid refrigeration system in subtropical city

引用

Frontiers in Energy 2019年第1期13卷 185-192页

作者： Xiangyang YE Liming LIU Zeyu LI School of Electric power South China University of TechnologyGuangzhou 510640 Key Laboratory of Efficient and Clean Energy Utilization of Guangdong Higher Education Institutes Guangzhou 510641China

solar absorption-subcooled compression hybrid refrigeration system is a new type of efficient and economical solar refrigeration device which always meets the demand of cooling load with the change of solar irradiance.The perfonnance of the hybrid system is higher due to the improvement of evaporator temperature of absorption subsystem.But simultaneously,the variation of working process as well as performance is complicated since the absorption and compression subsystems are coupled strongly.Based on the measured meteorological data of Guangzhou,a subtropical city in south China,a corresponding parametric model has been developed for the hybrid refrigeration system,and a program written by Fortran has been used to analyze the performance of the hybrid system under different external conditions.As the condensation temperature ranges from 38°C to 50°C,the working time fraction of the absorption subsystem increases from 75%to 85%.Besides,the energy saving fraction also increases from 5.31%to 6.02%.The average COP of the absorption subsystem is improved from 0.366 to 0.407.However,when the temperature of the absorption increases from 36°C to 48°C,the average COP of hybrid system decreases from 2.703 to 2.312.Moreover,the working time fraction of the absorption subsystem decreases from 80%to 71.7%.The energy saving fraction falls from 5.67%to 5.08%.In addition,when the evaporate temperature increases from 4°C to 14°C,the average COP of the absorption subsystem decreases from 0.384 to 0.365.The work of the compressor decreases from 48.2 kW to 32.8 kW and the corresponding average COP of the absorption subsystem is improved from 2.591 to 3.082.

关键词： solar absorption-subcooled compression hybrid dynamic simulation performance analysis

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Flexible ITO-free organic solar cells over 10% by employing drop-coated conductive PEDOT:PSS transparent anodes

引用

Science China Chemistry 2019年第4期62卷 500-505页

作者： Huiqin Cui Wei Song Billy Fanady Ruixiang Peng Jianfeng Zhang Jiaming Huang Ziyi Ge Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences Faculty of Materials Science and Chemical Engineering Ningbo University Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences

Highly conductive poly(3,4-ethylenedioxythiophene):poly(styrene-sulfonic acid)(PEDOT:PSS) has been explored to fabricate flexible and stretchable conductors. Generally, PEDOT:PSS transparent anodes are prepared by spin-coating method. In this article, we adopt a method by dropping PEDOT:PSS aqueous solution on the PET plastic substrate to fabricate flexible electrodes. Compared with spin coating, drop-coating is simple and cost-effective with large-area fabrications. Through this method, we fabricated highly transparent conductive electrodes and systematically studied their electrical, optical, morphological and mechanical properties. With dimethyl sulfoxide/methanesulfonic acid(DMSO/MSA) treated PEDOT:PSS electrode,bendable devices based on non-fullerene system displayed an open-circuit voltage of 0.925 V, a fill factor of 70.74%, and a high power conversion efficiency(PCE) of 10.23% under 100 mW cm^(-2) illumination, which retained over 80% of the initial PCE value after 1000 bending cycles. Based on the findings, drop-coated PEDOT:PSS electrodes exhibited high suitability for the development of large-area and high-efficiency printed solar cell modules in the future.

关键词： drop-coating PEDOT:PSS flexible electrodes figure of merit organic solar cells

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：