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Defect passivation with potassium trifluoroborate for efficient spray-coated perovskite solar cells in air

Journal of Semiconductors 2022年第9期43卷 25-33页

作者： Chen Gao Hui Wang Pang Wang Jinlong Cai Yuandong Sun Cong Yu Teng Li Xiaoshuai Zhang Dan Liu Tao Wang School of Materials Science and Engineering Wuhan University of TechnologyWuhan 430070China

Defects as non-radiative recombination centers hinder the further efficiency improvements of perovskite solar cells(PSCs).Additive engineering has been demonstrated to be an effective method for defect passivation in perovskite ***,we employed(4-methoxyphenyl)potassium trifluoroborate(C_(7)H_(7)BF_(3)KO)with and K+functional groups to passivate spray-coated(FAPbI_(3))_(x)(MAPbBr_(3))_(1-x) perovskite and eliminate *** is shown that the F of can form hydrogen bonds with the H atom in the amino group of MA+/FA+ions of perovskite,thus reducing the generation of MA+/FA+vacancies and improving device ***,K+and reduced MA+/FA+vacancies can inhibit ion migration,thereby eliminating *** the aid of C_(7)H_(7)BF_(3)KO,we obtained hysteresis-free PSCs with the maximum efficiency of 19.5%by spray-coating in *** work demonstrates that additive engineering is promising to improve the performance of spray-coated PSCs.

关键词： perovskite solar cells spray-coating additive engineering defect passivation hysteresis

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Design and optical performance investigation of all-sprayable ultrablack coating

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Nano Research 2023年第12期16卷 12901-12909页

作者： Chen Shen Huiyong Li Shuai Sun Hui Zhang Lanqin Yan Zhong Zhang CAS Key Laboratory of Nanosystem and Hierarchical Fabrication CAS Center for Excellence in NanoscienceNational Center for Nanoscience and TechnologyBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China Key Lab of Organic Optoelectronics and Molecular Engineering of Ministry of Education Laboratory of Flexible Electronics Technology Department of ChemistryTsinghua UniversityBeijing 100084China CAS Key Laboratory of Mechanical Behavior and Design of Materials Department of Modern MechanicsUniversity of Science and Technology of ChinaHefei 230027China

Although ultrablack surfaces are urgently needed in wide applications owing to their extremely low reflectance over a broadband wavelength,obtaining simultaneously the ultrablackness and mechanical robustness by simple process technique is still a great ***,by decoupling different light extinction effects to different layers of coating,we design an ultrablack coating that is all-sprayable in whole *** coating presents low reflectance over visible–mid-infrared(VIS–MIR)wavelength(av.R≈1%in VIS),low multi-angle scattering(bidirectional reflection distribution function(BRDF)=10-2–10-3 sr-1),together with good substrate adhesion grade and self-cleaning ability,which are superior to most reported sprayable ultrablack *** light extinction effects of each layer are *** method is also applicable in other material systems.

关键词： ultrablack spray-coating carbon nanomaterials multiple scattering intermediate layer

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Construction of mechanically robust superamphiphobic surfaces on fiber using large particles

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Frontiers of Materials Science 2022年第4期16卷 27-35页

作者： Chang LV Jinyi WANG Qirong TIAN Zhicheng ZHANG Tao WANG Rongfei LIU Sheng WANG School of Materials Science and Engineering Zhejiang Sci-Tech UniversityHangzhou 310018China Zhejiang Kangjiesi New Material Technology Co. LTD.Zhuji 311800China

Superamphiphobic surfaces have attracted the attention of researchers because of their broad application ***,superamphiphobicity is primarily achieved by minimizing the solid-liquid contact *** the past few decades,researchers have primarily focused on using physical deposition methods to construct superamphiphobic surfaces using fine-sized nanoparticles(coating on fiber by *** chemical vapordeposition treatment,the coating exhibited excellent superamphiphobicity and could repel various liquids,covering a wide rangeof surfacetensions(27.4-72.0mN-m^(-1)).

关键词： superamphiphobicity solid-liquid contact area SiO_(2) hierarchical structure spray-coating robustness

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Fabrication of fluoroalkylsilane/zeolitic imidazolate framework composites for highly efficient superhydrophobic coating

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Carbon Resources Conversion 2022年第1期5卷 26-34页

作者： Preyaphan Kheaw-in Chanatip Samart Narong Chanlek Phakkhananan Pakawanit Prasert Reubroycharoen Guoqing Guan Suwadee Kongparakul Suda Kiatkamjornwong Department of Chemistry Faculty of Science and TechnologyThammasat UniversityPathumthani 12120Thailand Bioenergy and Biochemical Refinery Technology Program Faculty of Science and TechnologyThammasat University12120Thailand Synchrotron Light Research Institute(Public Organization) 111 University AvenueMuang DistrictNakhon Ratchasima 30000Thailand Department of Chemical Technology Faculty of ScienceChulalongkorn University254 Phyathai RoadWangmaiPatumwanBangkok 10330Thailand Institute of Regional Innovation Hirosaki UniversityAomori 030-0813Japan Office of University Research Affairs Chulalongkorn University254 Phyathai RoadWangmaiPatumwanBangkok 10330Thailand FRST Academy of ScienceOffice of the Royal SocietySanam Suea PaKhet DusitBangkok 10300Thailand

Superhydrophobic bagasse paper was successfully engineered by facile spray coating with a zeolitic imidazolate framework composite modified by 3,3,3-trifluoropropyltrimethoxysilane(FAS)and used as a filter membrane with special wettability for oil/water *** characteristics such as surface morphology,surface moieties,roughness,and wettability were *** addition of FAS decreased the apparent surface energy between solid surfaces and liquids with a polar contribution of surface free energy as low as 0 mN m−*** formation of the FAS layer was confirmed by transmission electron microscopy and X-ray photoelectron spectroscopy core-level ***-dimensional surface topography revealed an increase in the spray coating cycle that enhanced the hydrophobicity of the coated *** results confirmed that not only microstructures but also the presence of functional groups with low surface energy(such as FAS)can promote surface *** spray-coated paper with FAS/ZIF in the presence of a small amount of nanocellulose provided a superhydrophobic surface after the first spray *** separation efficiency was up to 85%and was slightly affected by oil ***,this can be used as a filter membrane for water-in-oil *** the present work,simple spray-coated paper is a promising candidate material for gravity-driven oil/water separation and water repellent coating.

关键词： Superhydrophobic surface spray-coating Zeolitic imidazolate framework Oil/water separation

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spray-Coated Silver Nanowires as Top Electrode in Semitransparent Perovskite Solar Cell Devices

Spray-Coated Silver Nanowires as Top Electrode in Semitransp...

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第四届新型太阳能电池学术研讨会

作者： Kang Han Meng-Lan Xie Qun Luo Yuying Hao Chang-Qi Ma Printable Electronics Research Center Suzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of Sciences College of physics and optoelectronics Taiyuan University of Technology

Inorganic–organic halide perovskite solar cells have recently emerged as a promising photovoltaic technology due to their high efficiencies and low-cost processing *** perovskite solar cells have been simultaneously received growing attention because of their specific application in transparent architectures, such as windows, rooftops, greenhouses and other fashion *** this work, we fabricated semitransparent perovskite solar cells using spray-coated silver nanowires(Ag NWs) as top *** power conversion efficiency(PCE) of 12.0% was achieved under AM 1.5 100 mW cm illumination which corresponds to 80% of the reference devices with reflective opaque *** result indicated that high performance semitransparent perovskite solar cells could be achieved by a simple and low-cost spray-coated silver nanowires.

关键词： spray-coating Silver nanowires electrode Perovskite solar cells Semitransparent

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