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tin dioxide buffer layer-assisted efficiency and stability of wide-bandgap inverted perovskite solar cells

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Journal of Semiconductors 2022年第5期43卷 89-103页

作者： Bingbing Chen Pengyang Wang Ningyu Ren Renjie Li Ying Zhao Xiaodan Zhang Institute of Photoelectronic Thin Film Devices and Technology Renewable Energy Conversion and Storage CenterSolar Energy Conversion CenterNankai UniversityTianjin 300350China Key Laboratory of Photoelectronic Thin Film Devices and Technology of Tianjin Tianjin 300350China Engineering Research Center of Thin Film Photoelectronic Technology of Ministry of Education Tianjin 300350China Collaborative Innovation Center of Chemical Science and Engineering(Tianjin) Tianjin 300072China School of Physical Science and Technology Inner Mongolia UniversityKey Laboratory of SemiconductorHohhot 010021China

Inverted perovskite solar cells(IPSCs) have attracted tremendous research interest in recent years due to their applications in perovskite/silicon tandem solar cells. However, further performance improvements and long-term stability issues are the main obstacles that deeply hinder the development of devices. Herein, we demonstrate a facile atomic layer deposition(ALD) processed tin dioxide(SnO2) as an additional buffer layer for efficient and stable wide-bandgap IPSCs. The additional buffer layer increases the shunt resistance and reduces the reverse current saturation density, resulting in the enhancement of efficiency from 19.23% to 21.13%. The target device with a bandgap of 1.63 eV obtains open-circuit voltage of 1.19 V, short circuit current density of 21.86 mA/cm^(2), and fill factor of 81.07%. More importantly, the compact and stable SnO_(2) film invests the IPSCs with superhydrophobicity, thus significantly enhancing the moisture resistance. Eventually, the target device can maintain 90% of its initial efficiency after 600 h storage in ambient conditions with relative humidity of 20%–40% without encapsulation. The ALD-processed SnO_(2) provides a promising way to boost the efficiency and stability of IPSCs, and a great potential for perovskite-based tandem solar cells in the near future.

关键词： atomic layer deposition tin dioxide additional buffer layer efficiency and stability inverted perovskite solar cells

Pyrosol process for deposition of fluorine-doped tin dioxide thin films

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Chinese Physics B 2005年第7期14卷 1428-1432页

作者：曲艺张馨陈红高锦岳周大凡 CollegeofPhysics JilinUniversityChangchun130023China InstitueofChangchunNew-CenturyNanotechnology Changchun130033China

Transparent low-resistance SnO2:F films, suitable as a low-emissivity and conducting coating, have been deposited on silica-coated soda lime glass substrates by pyrosol process. SnCl4.5H2O and NH4F dissolved in solvent of 50% C2H5OH/50% H2O served as the starting solution. With the parameters such as substrate temperature of 450 degrees C, distance between the nozzle and substrate of 60mm, carrier gas flow rate of 8L/min and deposition time of 5min, the optimized SnO2:F films having a sheet resistance of about 2Ω/, were deposited repeatedly. The relationship between sheet resistances and infrared transmission spectra of SnO2:F films is shown schematically.

关键词： pyrosol deposition tin dioxide conducting coating

SnO_(2) quantum dots modified N-doped carbon as high-performance anode for lithium ion batteries by enhanced pseudocapacitance

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Rare Metals 2021年第1期40卷 48-56页

作者： Cui-Ping Wu Kai-Xuan Xie Jia-Peng He Qing-Peng Wang Jian-Min Ma Shun Yang Qing-Hong Wang School of Chemistry and Materials Science Jiangsu Normal UniversityXuzhou 221116China Institute of Biopharmaceutical Research Liaocheng UniversityLiaocheng 252059China School of Physics and Electronics Hunan UniversityChangsha 410082China Key Laboratory of Materials Processing and Mold(Zhengzhou University) Ministry of EducationZhengzhou UniversityZhengzhou 450002China

SnO_(2) is considered to be a promising candidate as anode material for lithium ion batteries,due to its high theoretical specific capacity(1494 mAh·g^(-1)).Nevertheless,SnO_(2)-based anodes suffer from poor electronic conductivity and serious volume variation(300%)during lithiation/delithiation process,leading to fast capacity *** solve these problems,SnO_(2) quantum dots modified N-doped carbon spheres(SnO_(2) QDs@N-C)are fabricated by facile hydrolysis process of SnCl2,accompanied with the polymerization of polypyrrole(PPy),followed by a calcination *** used as anodes for lithium ion batteries,SnO_(2) QDs@N-C exhibits high discharge capacity,superior rate properties as well as good *** carbon matrix completely encapsulates the SnO_(2) quantum dots,preventing the aggregation and volume change during ***,the high N content produces abundant defects in carbon *** is worth noting that SnO_(2) QDs@N-C shows excellent capacitive contribution properties,which may be due to the ultra-small size of SnO_(2) and high conductivity of the carbon matrix.

关键词： tin dioxide Quantum dots Nitrogen-doped carbon Lithium ion batteries

Multi-effect anthraquinone-based polyimide enclosed SnO_(2)/reduced graphene oxide composite as high-performance anode for lithium-ion battery

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Frontiers of Chemical Science and Engineering 2023年第9期17卷 1231-1243页

作者： Lin Wang Yinjie Kuang Qian Cui Junyu Shi Liubin Song Qionghua Li Tianjian Peng Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation School of Chemistry and Chemical EngineeringChangsha University of Science and TechnologyChangsha410114China Guizhou Dalong Huicheng New Material Co. Ltd.Tongren554000China

The cycling stability of SnO_(2)anode as lithium-ion battery is poor due to volume *** coatings can effectively confine the expansion of SnO_(2).However,linear polyimides are easily dissolved in ester electrolytes and their carbonyls is not fully utilized during charging/discharging ***,the SnO_(2)enclosed with anthraquinone-based polyimide/reduced graphene oxide composite was prepared by *** from the anthraquinone unit provide fully available active sites to react with Li^(+),improving the utilization of carbonyl in the *** exposed carbonyl active sites promote the conversion of Sn to SnO_(2)with electrode gradual activation,leading to an increase in reversible capacity during the charge/discharge *** addition,the introduction of reduced graphene oxide cannot only improve the stability of polyimide in the electrolyte,but also build fast ion and electron transport channels for composite *** to the multiple effects of anthraquinone-based polyimide and the synergistic effect of reducing graphene oxide,the composite anode exhibits a maximum reversible capacity of 1266 mAh·g^(−1) at 0.25 A·g^(−1),and maintains an excellent specific capacity of 983 mAh·g^(−1) after 200 *** work provides a new strategy for the synergistic modification of SnO_(2).

关键词： anthraquinone-based polyimide multi-effect tin dioxide reduced graphene oxide lithium-ion battery

Preparation and characterization of oil-soluble In_2O_3 nanoparticles and In_2O_3–SnO_2 nanocomposites and their calcined thin films

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International Journal of Minerals,Metallurgy and Materials 2015年第5期22卷 543-548页

作者： Li-ping Wang Xu-dong Xu Jia-xing Wang Department of Materials Physics and Chemistry School of Materials Science and Engineering University of Science and Technology Beijing

Oil-soluble In2O3 nanoparticles and In2O3-SnO2 nanocomposites were prepared in oleylamine via decomposition of metal acety- lacetonate precursors. Thin films of In2O3 and In2O3-SnO2 were obtained by spin-coating solutions of the oil-soluble In2O3 nanoparticles and In2O3-SnO2 nanocomposites onto substrates and then calcining them. Transmission electron microspectroscopy, scanning electron mi- crospectroscopy, atomic force microspectroscopy, X-ray diffraction, ultraviolet-visible absorption, and photoluminescence spectroscopy were used to investigate the properties of the nanoparticles and thin films. The In2O3 nanoparticles were cubic-phased spheres with a diame- ter of-8 nm; their spectra exhibited a broad emission peak centered at 348 nm. The In2O3-SnO2 nanocomposites were co-particles composed of smaller In2O3 particles and larger SnO2 particles; their spectra exhibited a broad emission peak at 355 nm. After the In2O3-SnO2 nano- composites were calcined at 400℃, the obtained thin films were highly transparent and conductive, with a thickness of 30-40 nm; the sur- faces of the thin films were smooth and crack-free.

关键词： indium trioxide tin dioxide nanoparficles nanocomposites thin films calcination

Epitaxial Growth of Multi-structure SnO_2 by Chemical Vapor Deposition

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Acta Metallurgica Sinica(English Letters) 2015年第7期28卷 946-950页

作者： Dong-Ning He Peter Hodgson Wei-Min Gao Agricultural Product Processing Research Institute Chinese Academy of Tropical Agricultural Sciences Institute for Frontier Materials Deakin University Centre of Excellence in Engineered Fibre Composites(CEEFC) Faculty of HealthEngineering and SciencesUniversity of Southern Queensland

The nanowire and whisker heterostructures of tin dioxide were fabricated by the chemical vapor deposition *** was demonstrated that various structures of tin oxide can be obtained by controlling the thickness of gold layer and the partial pressure of source vapor at growing sites.12.5 and 25 nm thicknesses are preferable for the epitaxial growth of nanowires and heterostructure through vapor–liquid–solid mechanism,*** tin dioxide whiskers with core-shell structure were fabricated by vapor–solid ***,the influences of various factors on the tin dioxide growth are also discussed.

关键词： Nanostructure Heterostructure tin dioxide Chemical vapor deposition Carbothermal method

Forming and Gathering of SnO2 Nanoparticles on External Surface of High Silica TON, MFI and FAU Type Zeolites

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Chinese Journal of Chemistry 2006年第12期24卷 1725-1730页

作者：徐孝文汪靖龙英才 Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Department of Chemistry Fudan University Shanghai 200433 China Department of Chemistry and Chemical Engineering University of Science and Technology of Suzhou Suzhou Jiangsu 215011 China

tin dioxide （SnO2） nano-particles were prepared on high silica TON, MFI and FAU type zeolites by impregnation of SnC12 solution and subsequent calcination at 873 K. XRD and SAED were used to characterize the crystalline phase, and TEM was used to characterize the morphology, the particle size and the agglomerative state of the formed nano-materials. The nano-particles, which possess 8 nm, 10-80 nm and 6 nm in size, were found to form on the outer surface of TON, MFI and FAU zeolites, respectively. SnO2 microcapsules and SnOz netlike nanostructure were obtained by decomposition of SnO2-TON and SnO2-MFI in 40% hydrofluoric acid at room temperature. Compared with the nano-particles formed on NaY zeolite, the special morphology and the agglomerative state of SnO2 nanostructures on TON and MFI type zeolites with one and two dimension channel system indicate that the heterogeneous framework, surface structure and property perform important function for forming and growing SnO2 nanostructure on the outer surface of the zeolites.

关键词： nano-material tin dioxide TON zeolite MFI zeolite FAU zeolite

Microstructure and properties of honeycomb composite films containing Eu and Sn

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Rare Metals 2023年第6期42卷 2068-2074页

作者： Hai-Yan Chen Lu Li Zhi-Feng Wang Jun-Liang Liu Cheng-Yin Wang Ming Zhang School of Chemistry and Chemical Engineering Yangzhou UniversityYangzhou225009China School of Chemistry and Chemical Engineering Yangzhou Polytechnic CollegeYangzhou225127China Testing Center Yangzhou UniversityYangzhou225009China

Honeycomb composite films were prepared by breath figure method via a straightforward,one-step process by doping complex containing Eu or Sn into polystyrene-b-poly(acrylic acid) *** key influencing factors,such as the concentration of the block polymer solution,the relative humidity of the environment and the amount of complexes,were investigated to control micropore size and tune film surface *** characteristics of the composite films were studied by scanning electron microscopy(SEM),atomic force microscopy(AFM),X-ray diffraction(XRD),ultraviolet and emission *** indicate that composite films containing Eu have excellent optical performance,and micro-patterned bowl-like SnO_(2) microparticles could be fabricated from composite films containing Sn after being calcined at 600℃ for 5 *** general approach for the fabrication of honeycomb composite films opens a convenient and effective route to the functional modification of honeycomb films and offers new prospects for the application in miniaturized sensors,micro-reactor and catalysis.

关键词： Honeycomb composite film Complex containing Eu tin dioxide Breath figure method Microstructure

Preparation of quantum size of tin oxide: Structural and physical characterization

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Progress in Natural Science:Materials International 2016年第2期26卷 145-151页

作者： N.M.Shaalan D.Hamad A.Y.Abdel-Latief M.A.Abdel-Rahim Physics Department Faculty of Science Assiut University

SnO2NPs were successfully prepared via a hydrothermal method. X-ray diffraction analysis con fi rmed the rutile tetragonal structure of SnO2NPs. The crystallite size increased from 1.18 to 5.06 nm with increasing the preparation temperature from 100 to 180 °C. The SEM photography of the products exhibited the agglomeration of the SnO2nanocrystals to large view particles, while TEM images con fi rmed the polycrystalline phase and crystallite size those analyzed from XRD. The UV–vis absorption of ethanol suspended SnO2NPs was measured. The optical band-gap energies（Eg） were signi fi cantly blue-shifted due to quantum con fi nement. Fluorescence spectra came to con fi rm this shift, where a clear shift in the maximum emission peak was observed. Stokes shift of SnO2nanocrystals was found to be crystallite size dependent.

关键词： Nanostructures tin dioxide Luminescence Optical properties