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Journal of Wuhan University of Technology(Materials Science) 2021年第3期36卷 358-363页

作者： CHI Wenhao ZHU Yuexu FU Zhengyi XIE Jingjing State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China

A recombinant protein ChiSifiCa,which was originally designed for regulation of calcium carbonate,was utilized to direct the mineralization of PbI_(2).By the regulation of ChiSifiCa protein,PbI_(2)nanoparticles composed of crystalline nanoflakes and amorphous nanorods were fabricated under environmental benign *** PbI_(2)was successfully applied for preparation of perovskite precursors to fabricate solar *** regulation of ChiSifiCa on PbI_(2)improves the power conversion efficiency of corresponding perovskite solar cells to 16%.The present study may open a new avenue in the design and synthesis of materials with novel structures and functions.

关键词： bioprocess-inspired fabrication biomineralization ChiSifiCa protein lead iodide perovskite solar cells

A short overview of the lead iodide residue impact and regulation strategies in perovskite solar cells

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Journal of Energy Chemistry 2024年第3期90卷 504-510,I0012页

作者： Eng Liang Lim Zhanhua Wei Xiamen Key Laboratory of Optoelectronic Materials and Advanced Manufacturing Institute of Luminescent Materials and Information DisplaysCollege of Materials Science and EngineeringHuaqiao UniversityXiamen 361021FujianChina

lead iodide(PbI2) is a vital raw material for preparing perovskite solar cells(PSCs),and it not only takes part in forming the light absorption layer but also remains in the grain boundary as a *** other words,the PbI2 content in the precursor and as formed film will affect the efficiency and stability of the *** moderate residual PbI2,it passivates the bulk/surface defects of perovskite,reduces the interfacial recombination,promotes the perovskite stability,minimizes the device hysteresis,and so *** PbI2 residue will reduce the interfacial passivation effect and device *** addition to facilitating the non-radiative recombination,over PbI2 residue can also lead to electronic insulation in the grain boundary and deteriorate the device ***,the impact and regulation of PbI2 residue on the device performance and stability is still not fully ***,a comprehensive and detailed review is presented by discussing the PbI2 residue impact and its regulation strategies(i.e., elimination,facilitation and conversion of the residue PbI2) to manipulate the PbI2 content,distribution and ***,we also show future outlooks in this field,with an aim to help further the progression of high-efficiency and stable PSCs.

关键词： lead iodide Residue Regulation Perovskite solar cells Efficiency Stability

A Polymeric Iodiplumbate(Ⅱ) Templated by Conjugated Quaternary Ammonium:Synthesis,Band Structure and Optical Properties

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Chinese Journal of Structural Chemistry 2007年第11期26卷 1315-1321页

作者：成丽川李浩宏陈之荣李俊篯黄长沧蔡增良 College of Chemistry and Chemical Engineering Fuzhou University

A new lead（Ⅱ） iodide coordination polymer [（npq）（PbI3）]n1 （npq = N-propyl- quinolinium） has been synthesized in the presence of npq as structure-directing reagent （SDA）. Compound 1 crystallizes in the orthorhombic system, space group Pbca, with a = 19.158（4）, b = 7.9909（16）, c = 22.929（5） A, V = 3510.2（12） A3, Z = 8, Dc = 2.877 g/cm3, F（000） = 2672, C12H1413NPb, Mr= 760.14, μ（MoKα） = 14.872 mm-1, the final R = 0.0431 and wR = 0.1021 for 3678 observed reflections with Ⅰ 〉 2σ（Ⅰ）. Structure determination indicates that the [PbI3]^-n infinite chains in each unit cell shape the sketch of 1, which could be described as the result of face-sharing distorted PbI6 octahedra running along the b axis. Electrostatic interaction between conjugated organic counter-cations and inorganic moieties presents and contributes to the crystal packing. 1 was further characterized with IR and elemental analysis. Based on the crystal structure data, quantum chemical calculation with DFT method was used to reveal the electronic structure and optical property of 1.

关键词： coordination polymers lead iodide density of state optical property

Low-Temperature Aging Provides 22% E cient Bromine-Free and Passivation Layer-Free Planar Perovskite Solar Cells

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Nano-Micro Letters 2020年第7期12卷 29-42页

作者： Xin Wang Luyao Wang Tong Shan Shibing Leng Hongliang Zhong Qinye Bao Zheng-Hong Lu Lin-Long Deng Chun-Chao Chen School of Material Science and Engineering Shanghai Jiao Tong UniversityShanghai 200240People’s Republic of China School of Chemistry and Chemical Engineering Shanghai Jiao Tong UniversityShanghai 200240People’s Republic of China Key Laboratory of Solar Materials and Devices Department of Electronic ScienceSchool of Physics and Electronic ScienceEast China Normal UniversityShanghai 200240People’s Republic of China Department of Materials Science and Engineering University of Toronto184 College StreetTorontoON M5S 3E4Canada Pen-Tung Sah Institute of Micro-Nano Science and Technology Xiamen UniversityXiamen 361005People’s Republic of China

Previous reports of formamidinium/methylamine(FAMA)-mixed halide perovskite solar cells have focused mainly on controlling the morphology of the perovskite film and its interface—for example,through the inclusion of bromine and surface *** this paper,we describe a new processing pathway for the growth of a high-quality bromine-free FAMAPbI3 halide perovskites via the control of intermediate *** low-temperature aging growth(LTAG)of a freshly deposited perovskite film,α-phase perovskites can be seeded in the intermediate phase and,at the same time,prevent beta-phase perovskite to *** postannealing,large grain-size perovskites with significantly reduced PbI2 presence on the surface can be obtained,thereby eliminating the need of additional surface passivation *** pristine LTAG-treated solar cells could provide PCEs of greater than 22%without elaborate use of bromine or an additional passivation *** importantly,when using this LTAG process,the growth of the pure alpha-phase FAMAPbI3 was highly reproducible.

关键词： Aging growth Bromine-free Passivation layer lead iodide Perovskite solar cells

SiO2 nanoparticle-regulated crystallization of lead halide perovskite and improved efficiency of carbon-electrode-based low-temperature planar perovskite solar cells

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Chinese Physics B 2020年第7期29卷 576-582页

作者： Zerong Liang Bingchu Yang Anyi Mei Siyuan Lin Hongwei Han Yongbo Yuan Haipeng Xie Yongli Gao Conghua Zhou Hunan Key Laboratory of Super-microstructure and Ultrafast Process School of Physics and ElectronicsCentral South UniversityChangsha 410083China Michael Grä tzel Center for Mesoscopic Solar CellsWuhan National Laboratory for OptoelectronicsHuazhong University of Science and TechnologyWuhan 430074China Department of Physics and Astronomy University of RochesterRochesterNY 14627USA

SiO2 nanoparticles were used to regulate the crystallizing process of lead halide perovskite films prepared by the sequential deposition method,which was used in the low-temperature-processed,carbon-electrode-basing,hole-conductor-free planar perovskite solar *** was observed that,after adding small amount of SiO2 precursor(1 vol%)into the lead iodide solution,performance parameters of open-circuit voltage,short-circuit current and fill factor were all upgraded,which helped to increase the power conversion efficiency(reverse scan)from 11.44(±1.83)%(optimized at 12.42%)to 14.01(±2.14)%(optimized at 15.28%,AM 1.5G,100 mW/cm^2).Transient photocurrent decay curve measurements showed that,after the incorporation of SiO2 nanoparticles,charge extraction was accelerated,while transient photovoltage decay and dark current curve tests both showed that recombination was *** improvement is due to the improved crystallinity of the perovskite film.X-ray diffraction and scanning electron microscopy studies observed that,with incorporation of amorphous SiO2 nanoparticles,smaller crystallites were obtained in lead iodide films,while larger crystallites were achieved in the final perovskite *** study implies that amorphous SiO2 nanoparticles could regulate the coarsening process of the perovskite film,which provides an effective method in obtaining high quality perovskite film.

关键词： perovskite solar cell carbon-electrode crystallization low temperature SiO2 lead iodide