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Recent advances and emerging trends of rare-earth-ion doped spectral conversion nanomaterials in perovskite solar cells

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Journal of Rare Earths 2022年第11期40卷 1651-1667,I0001页

作者： Syed Afaq Ali Shah Muhammad Hassan Sayyad Jinghua Sun Zhongyi Guo School of Electrical Engineering&Intelligentization Dongguan University of TechnologyDongguan 523808China Advanced Photovoltaic Research Labs(APRL) Faculty of Engineering SciencesGhulam Ishaq Khan Institute of Engineering Sciences and TechnologyTopiDistrictSwabiKhyberPakhtunkhwa23640Pakistan School of Computer and Information Hefei University of TechnologyHefei 2300o9China

Organic-inorganic lead halide based perovskite solar cells(PSCs)have attracted unprecedented research interest over last *** high performance,combined with merits of low fabrication costs and ease of synthesis make PSCs promising alternate to state of the art silicon(Si)based solar *** r,some inherent shortcomings of PSCs are hindering their market dominance over conventional photovoltaic technologies such as transmission loss of sub-bandgap photons,poor stability and hysteresis ***,use of rare earth(RE)ions doped nanomaterials in PSCs,has been identified as an effective means to address the aforementioned issues by expanding the range of absorption spectra minimizing the non-absorption loss of solar photons,enhancing light scattering and improving operational *** article reviews the recent progress in doping rare-earth(RE)ions in the building blocks of PSCs such as semiconductor electrodes and photoactive perovskite layers,and its use as a separate spectral conversion layer in *** effect of size,shape,constitution and concentration of RE-nanoparticles on the overall performance and device stability will be analyzed in ***,we provide an outlook on the opportunities this newly developed field offers and the critical challenges faced in rationally and effectively using RE-ion-doped nanomaterials in PSCs for better operational stability and enhanced performance.

关键词： Efficiency Electron transport layer photovoltaics Rare-earth(RE) Perovskite solar cells Up/down conversion

Dimensionality regulation in tin halide perovskite solar cells: Toward high performance and stability

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Journal of Energy Chemistry 2023年第2期77卷 144-156,I0005页

作者： Huanhuan Yao Shurong Wang Zhiwen Jin Liming Ding Feng Hao School of Materials and Energy University of Electronic Science and Technology of ChinaChengdu 611731SichuanChina School of Materials and Energy&School of Physical Science and Technology&Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education Lanzhou UniversityLanzhou 730000GansuChina Center for Excellence in Nanoscience(CAS) Key Laboratory of Nanosystem and Hierarchical Fabrication(CAS)National Center for Nanoscience and TechnologyBeijing 100190China

Tin halide perovskites(THPs)have received extensive attention due to their low toxicity and excellent optoelectronic properties,and are considered to be the most promising alternatives to develop efficient lead-free perovskite solar ***,due to the unique and inherent characteristics of Sn^(2+)being easily oxidized to Sn^(4+)and fast crystallization,tin perovskite solar cells(TPSCs)show relatively poor performance and stability,compared to the lead ***,the introduction of bulky organic spacers into three-dimensional(3D)THPs for dimensional regulation can not only prevent the intrusion of water and oxygen,but also inhibit the self-doping effect and ion *** this review,we will detail how dimensional regulation enables TPSCs with high performance and superior ***,we summarize the intrinsic properties of THPs and analyze the root causes of their poor performance and ***,we discuss the specific structure and types of the dimensional regulation ***,the mechanism of dimensional regulation is discussed in detail,mainly from inhibiting the Sn^(2+)oxidation,optimizing crystallization,passivating defects,and improving energy level ***,future challenges and prospects for dimensional regulation are elaborated to help researchers develop more efficient and stable TPSCs.

关键词： Organic spacers Dimensional regulation Long-term stability Performance photovoltaics

Distributed power conditioning unit of large-scale space solar power station

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Chinese Journal of Aeronautics 2024年第8期37卷 421-434页

作者： Xintong LI Jianwei MI Yiqun ZHANG Guanheng FAN Jie DU School of Mechano-electronic Engineering Xidian UniversityXi’an 710071China Shaanxi Key Laboratory of Space Solar Power Station System Xidian UniversityXi’an 710071China Academy of Advanced Interdisciplinary Research Xidian UniversityXi’an 710071China

In this paper,a multi-bus distributed Power Conditioning Unit(PCU)is proposed for the Space Solar Power Station with large scale photovoltaic(PV)array and power levels reaching MW *** this unit,there are multiple independent PV *** each PV array,there are multiple independent PV *** this paper,a V-P droop control method with adaptive droop coefficient is proposed,which modifies the droop intercept based on the bus voltage deviation and the power per unit value of the PV *** method ensures the accuracy of bus voltage and achieves proportional distribution of power between PV arrays based on the proposed topology structure in this *** the load changes or the output power of the PV array fluctuates,this method can ensure that power is distributed *** principle and control method of the proposed droop control method is analyzed in this *** effectiveness of the method is verified through MATLAB/Simulink simulation and *** and experimental results show that the proposed method can achieve power distributed proportionally when load changes and PV output power fluctuates,reduce bus voltage error caused by line impedance and differences in rated power of different PV arrays,and improve the performance of PV power generation system applied to space.

关键词： Space Solar Power Station photovoltaics Droop control DC confluence Power conditioning unit

Metallated conjugation in small-sized-molecular donors for solution-processed organic solar cells

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Science China Chemistry 2015年第2期58卷 347-356页

作者： Chaohua Cui Yunye Zhang Wallace C.H.Choy Hua Li Wai-Yeung Wong Institute of Molecular Functional Materials Department of Chemistry and Institute of Advanced Materials Hong Kong Baptist University Department of Electrical and Electronic Engineering The University of Hong Kong College of Life and Environmental Sciences & Beijing Engineering Research Center of Food Environment and Public Health Minzu University of China HKBU Institute of Research and Continuing Education Shenzhen Virtual University Park

Four metallated conjugated oligothiophenes, S-1, S-2, S-3 and S-4, with platinum（II） aryleneethynylenes as the electron-rich building block were synthesized to investigate their physicochemical and photovoltaic properties. These small molecules possess fairly low-lying HOMO energy levels which match with the LUMO energy level of the electron acceptor PC70BM （[6,6]-phenyl-C71-butyric acid methyl ester）. Using the simple process of spin-coating solution fabrication technique, S-I：PC70BM （1：4, w/w） based organic solar cells exhibiting a high Voc of 0.913 V, with a PCE value of 0.88% were developed. In contrast, the OSC device based on S-2：PC70BM （3：7, w/w） displayed a higher PCE of 1.59% with a higher Jsc value of 5.89 mA cm^-2. The device based on S-4：PCToBM （1：4, w/w） exhibited a PCE value of 1.56%, with a Voc of 0.917 V.

关键词： platinum acetylide photovoltaics organic solar cell oligothiophene

Structures and electronic properties of domain walls in Bi FeO3 thin films

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National Science Review 2019年第4期6卷 669-683页

作者： Huaixun Huyan Linze Li Christopher Addiego Wenpei Gao Xiaoqing Pan Department of Materials Science and Engineering University of CaliforniaIrvine Department of Physics and Astronomy University of CaliforniaIrvine Irvine Materials Research Institute University of CaliforniaIrvine

Domain walls（DWs） in ferroelectrics are atomically sharp and can be created, erased, and reconfigured within the same physical volume of ferroelectric matrix by external electric fields. They possess a myriad of novel properties and functionalities that are absent in the bulk of the domains, and thus could become an essential element in next-generation nanodevices based on ferroelectrics. The knowledge about the structure and properties of ferroelectric DWs not only advances the fundamental understanding of ferroelectrics, but also provides guidance for the design of ferroelectric-based devices. In this article, we provide a review of structures and properties of DWs in one of the most widely studied ferroelectric systems, BiFeO3thin films. We correlate their conductivity and photovoltaic properties to the atomic-scale structure and dynamic behaviors of DWs.

关键词： domain wall BiFeO3 ferroelectric conductivity photovoltaics thin film

Preparation and promising optoelectronic applications of lead halide perovskite patterned structures:A review

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Carbon Energy 2023年第10期5卷 91-115页

作者： Shangui Lan Baojun Pan Ying Liu Zhixiang Zhang Lijie Zhang Bin Yu Yanjun Fang Peijian Wang State Key Laboratory of Silicon Materials School of Materials Science and EngineeringZhejiang UniversityHangzhouZhejiangChina ZJU‐Hangzhou Global Scientific and Technological Innovation Center Future Science Research InstituteZhejiang UniversityHangzhouZhejiangChina Key Laboratory of Carbon Materials of Zhejiang Province Institute of New Materials and Industrial TechnologiesCollege of Chemistry and Materials EngineeringWenzhou UniversityWenzhouZhejiangChina School of Micro‐Nano Electronics Zhejiang UniversityHangzhouZhejiangChina

Lead halide perovskites have received considerable attention from researchers over the past several years due to their superior optical and optoelectronic properties,because of which they can be a versatile platform for fundamental science research and *** structures based on lead halide perovskites have much more novel properties compared with their more commonly seen bulk-,micro-,and nano-crystals,such as improvement in antireflection,light-scattering effects,and light absorption,as a result of their adjustability of spatial ***,there are many challenges yet to be resolved in this field,such as insufficient patterned resolution,imperfect crystal quality,complicated preparation process,and so *** pave the way to solve these problems,we provide a systematic presentation of current methods for fabricating lead halide perovskite patterned structures,including thermal imprint,use of etching films,two-step vapor-phase growth,template-confined solution growth,and seed-assisted ***,the advantages and disadvantages of these methods are elaborated in *** addition,thanks to the extraordinary properties of lead halide perovskite patterned structures,a variety of potential applications in optics and optoelectronics of these structures are ***,we put forward existing challenges and prospects in this exciting field.

关键词： fabrication lead halide perovskites optics optoelectronics patterned structures photovoltaics

Hexagonal yttrium manganite:A review on synthesis methods,physical properties and applications

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Journal of Rare Earths 2023年第1期41卷 19-31页

作者： Bhagyashree Munisha Bindhybasinee Mishra Jyotirmayee Nanda Centre for Nanoscience and Nanotechnology ITERS‘O’A(Deemed to be)UniversityKhandagiriBhubaneswar751030OdishaIndia Department of Physics ITERS‘O’A(Deemed to be)UniversityKhandagiriBhubaneswar751030OdishaIndia

Hexagonal rare-earth manganites have attracted considerable interest due to their complex multiferroic properties,and they possess a spontaneous electric polarization and may be utilized in various technological applications ranging from solar cells to non-volatile memories and light *** narrow bandgap of hexagonal rare-earth manganite-based compounds can perform remarkable optical anisotropy properties,which make these very efficient photovoltaic materials in parallel with the widely used TiO_(2)-based *** enlargement of the traditional field of hexagonal rare-earth manganite photocatalysis also arose in the last *** article imparts an extensive review of the rational synthesis,optical properties,structural characterization,and applications of hexagonal rare-earth *** properties of hexagonal rare-earth perovskite manganite are also emphasized,and a range of unique applications in photocatalysis and photovoltaics are ***,we wind up this review with some linear perspectives and future research in this area.

关键词： Yttrium manganite Multiferroic Optical analysis Photocatalysis photovoltaics Rare earths

A review of bifacial solar photovoltaic applications

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Frontiers in Energy 2023年第6期17卷 704-726页

作者： Aydan GARROD Aritra GHOSH Faculty of Environment Science and Economy(ESE)Renewable EnergyElectric and Electronic EngineeringUniversity of ExeterPenryn TR109FEUK

Bifacial photovoltaics (BPVs) are a promising alternative to conventional monofacial photovoltaics given their ability to exploit solar irradiance from both the front and rear sides of the panel, allowing for a higher amount of energy production per unit area. The BPV industry is still emerging, and there is much work to be done until it is a fully mature technology. There are a limited number of reviews of the BPV technology, and the reviews focus on different aspects of BPV. This review comprises an extensive in-depth look at BPV applications throughout all the current major applications, identifying studies conducted for each of the applications, and their outcomes, focusing on optimization for BPV systems under different applications, comparing levelized cost of electricity, integrating the use of BPV with existing systems such as green roofs, information on irradiance and electrical modeling, as well as providing future scope for research to improve the technology and help the industry.

关键词： bifacial photovoltaics(BPVs) bifacial photovoltaics applications review solar

A major step toward efficient and stable single-material organic solar cells

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Science China Chemistry 2019年第9期62卷 1085-1086页

作者： Jean Roncali Group Linear Conjugated Systems CNRS Moltech AnjouUniversity of Angers Department of Chemistry and SOOMCC Faculty of Chemistry and Chemical EngineeringBabes-Bolyai University

Organic photovoltaics (OPV) can potentially combine low cost, lightness, flexibility and low environmental impact. In less than two decades, the power conversion efficiency(PCE) of OPV cells has increased from 1 to mo... 详细信息

关键词： Organic photovoltaics (OPV) power conversion efficiency(PCE) stable single-material organic solar cells