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Chiral cation promoted interfacial charge extraction for efficient tin-based perovskite solar cells

Journal of Energy Chemistry 2022年第5期31卷 789-796页

作者： Weiyin Gao He Dong Nan Sun Lingfeng Chao Wei Hui Qi Wei Hai Li Yingdong Xia Xingyu Gao Guichuan Xing Zhongbin Wu Lin Song Peter Müller-Buschbaum Chenxin ran Yonghua Chen frontiers Science Center for flexible Electronics Xi’an Institute of Flexible Electronics(IFE)and Xi’an Institute of Biomedical Materials&EngineeringNorthwestern Polytechnical UniversityXi’an 710072ShaanxiChina Key Laboratory of flexible Electronics(KLOfE)&Institution of Advanced Materials(IAM) Nanjing Tech University(NanjingTech)Nanjing 211816JiangsuChina Joint Key Laboratory of the Ministry of Education Institute of Applied Physics and Materials EngineeringUniversity of MacaoMacaoChina Shanghai Synchrotron radiation facility(SSrf) Zhangjiang LaboratoryShanghai Advanced Research InstituteChinese Academy of SciencesShanghaiChina lehrstuhl für funktionelle materialien Physik DepartmentTechnische Universität München.James-Franck-Str.185748 GarchingGermany Heinz Maier-Leibnitz Zentrum(MLZ) Technische Universität MünchenLichtenbergstr.185748 GarchingGermany

Pb-free Sn-based perovskite solar cells(PSCs) have recently made inspiring progress, and power conversion efficiency(PCE) of 14.8% has been achieved. However, due to the energy-level mismatch and poor interfacial contact between commonly used hole transport layer(i.e., poly(3,4-ethylenedioxythio phene):poly(styrene sulfonate), PEDOT:PSS) and fASnI_(3) film, it is still challenging to effectively extract holes at the interface. Owing to the p-type nature of Sn-based perovskites, the efficient hole extraction is of particular significance to improve the PCE of their solar cells. In this work, for the first time, the role of chiral cations, a-methylbenzylamine(S-/r-/rac-MBA), in promoting hole transportation of fASnI_(3)-based PSCs is demonstrated. The introduction of MBAs is found to form 2D/3D film with lowdimensional structures locating at PEDOT:PSS/fASnI_(3) interface, which facilitates the energy level alignment and efficient charge transfer at the interface. Importantly, chiral-induced spin selectivity(CISS)effect of r-MBA_(2)SnI_(4)induced by chiral r-MBA cation is found to further assist the specific interfacial transport of accumulated holes. As a result, r-MBA-based PSCs achieve decent PCE of 10.73% with much suppressed hysteresis and enhanced device stability. This work opens up a new strategy to efficiently promote the interfacial extraction of accumulated charges in working PSCs.

关键词： Tin perovskite Chiral cation 2D/3D structure Interfacial charge extraction Solar cells

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Stable Metal–Halide Perovskite Colloids in Protic Ionic Liquid

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CCS Chemistry 2022年第10期4卷 3264-3274页

作者： Hao Gu Tingting Niu Shouwei Zuo Yongqing Cai Lingfeng Chao Peter Müller-Buschbaum Yingdong Xia Jing Zhang Guichuan Xing Yonghua Chen Key Laboratory of flexible Electronics(KLOfE) Institution of Advanced Materials(IAM)Nanjing Tech University(NanjingTech)Nanjing 211816Jiangsu Joint Key Laboratory of the Ministry of Education Institute of Applied Physics and Materials EngineeringUniversity of MacaoTaipa 999078Macao frontiers Science Center for flexible Electronics Xi’an Institute of Flexible Electronics(IFE)Xi’an Institute of Biomedical Materials&EngineeringNorthwestern Polytechnical UniversityXi’an 710072 Beijing Synchrotron radiation facility Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049 University of Chinese Academy of Sciences Beijing 100049 lehrstuhl für funktionelle materialien Physik DepartmentTechnische Universität MünchenGarching 85748 Heinz Maier-Leibnitz Zentrum(MLZ) Technische Universität MünchenGarching 85748

Obtaining long-term stable and robust perovskite colloids solution remains an important scientific challenge due to the limited interaction between solvent and perovskite solutes.Here,we unveil the formation mechanism of chemically robust perovskite precursor solutions under ambient conditions using methylammonium acetate(CH3NH3•CH3COO,MAAc)protic ionic liquid(PIL)solvent.Tens of nanometers colloids are assembled on the molecular level via regular oriented gel-like lamellae with a mean thickness of 34.69 nm,width of 56.81 nm,and distance of 91.05 nm.

关键词： perovskite colloids protic ionic liquid X-ray absorption fine structure spectroscopy coordination interaction

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All-optical controlled-NOT logic gate achieving directional asymmetric transmission based on metasurface doublet

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光电进展(英文) 2023年第7期6卷 41-49页

作者： Yijia Huang Tianxiao Xiao Shuai Chen Zhengwei Xie Jie Zheng Jianqi Zhu Yarong Su Weidong Chen Ke Liu Mingjun Tang Peter Müller-Buschbaum Ling Li Laboratory of Micro-Nano Optics College of Physics and Electronic EngineeringSichuan Normal UniversityChengdu 610101China Physik-Department Lehrstuhl für Funktionelle MaterialienTechnische Universität MünchenJames-Franck-Straße 185748GarchingGermany Heinz Maier-Leibnitz Zentrum(MLZ) Technische Universität MünchenLichtenbergstraße.185748GarchingGermany Tianjin Huahuixin Technology Group Co. LtdZhongtian AvenueTianjin 300467China

Optical logic gates play important roles in all-optical logic circuits,which lie at the heart of the next-generation optical computing technology.However,the intrinsic contradiction between compactness and robustness hinders the development in this field.Here,we propose a simple design principle that can possess multiple-input-output states according to the incident circular polarization and direction based on the metasurface doublet,which enables controlled-NOT logic gates in infrared region.Therefore,the directional asymmetric electromagnetic transmission can be achieved.As a proof of concept,a spin-dependent Janus metasurface is designed and experimentally verified that four distinct images corresponding to four input states can be captured in the far-field.In addition,since the design method is derived from geometric optics,it can be easily applied to other spectra.We believe that the proposed metasurface doublet may empower many potential applications in chiral imaging,chiroptical spectroscopy and optical computing.

关键词： metasurface polarization control asymmetric transmission logic gate

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Efficient and stable ruddlesden-Popper layered tin-based perovskite solar cells enabled by ionic liquid-bulky spacers

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Science China Chemistry 2021年第9期64卷 1577-1585页

作者： Jian Qiu Yuexin Lin Xueqin ran Qi Wei Xingyu Gao Yingdong Xia Peter Müller-Buschbaum Yonghua Chen Key Laboratory of flexible Electronics(KLOfE)&Institution of Advanced Materials(IAM) Nanjing Tech University(NanjingTech)Nanjing211816China frontiers Science Center for flexible Electronics Xi’an Institute of Flexible Electronics(IFE)and Xi’an Institute of Biomedical Materials&EngineeringNorthwestern Polytechnical UniversityXi’an710072China Shanghai Synchrotron radiation facility Shanghai Institute of Applied PhysicsChinese Academy of SciencesShanghai201204China lehrstuhl für funktionelle materialien Physik DepartmentTechnische Universität München85748GarchingGermany Heinz Maier-Leibnitz Zentrum(MLZ) Technische Universität München85748GarchingGermany

The crucial component,bulky spacers,in two-dimensional ruddlesden-Popper(2 DrP)layered tin(Sn)perovskites are highly limited by halide ammonium salts,leading to the insufficient control of complex crystallization process due to the limited interaction between bulky spacers and 2 DrP perovskite frameworks.Here,we report an ionic liquid-bulky spacer,butylammounium acetate(BAAc O),for constructing efficient and stable 2 DrP Sn-based perovskite solar cells(PSCs).In contrast to the traditional halide ammonium bulky spacer,butylammounium iodide(BAI),the Ac O^(-)-functional group in BAAc O has a strong interaction with formamidine ions(fA^(+))and Sn2+.The inter-component interaction allows the formation of controllable intermediates for the favorable growth of smooth,dense,and highly oriented perovskite films.A PSC with power conversion efficiency of 10.36%(7.16%for BAI)is achieved,which is the highest report,along with improved stability with~90%retained after~600 h storage in N_(2) atmosphere without any encapsulation.

关键词： lead-free ruddlesden-Popper phase Sn-based perovskite solar cells ionic liquid-bulky spacer crystallization kinetic control

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喷涂制备ZnO/P3HT/P3HT-b-PEO薄膜的形貌和光电性能调控

喷涂制备ZnO/P3HT/P3HT-b-PEO薄膜的形貌和光电性能调控

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第七届新型太阳能电池材料科学与技术学术研讨会

作者：王昆 Lorenz Bieβmann Matthias Schwartzkopf Stephan V.roth Peter Müller-Buschbaum lehrstuhl für funktionelle materialien Physik-DepartmentTechnische Universit?t München

无机金属氧化物纳米结构的调控对有机-无机杂化太阳能电池性能至关重要。在无机金属氧化物中,由于ZnO具有优异的光电性能,且其形貌易于调控,因而被广泛研究。溶胶凝胶法是制备ZnO最常用的方法之一,通过溶胶凝胶法可以将溶液简单地制备... 详细信息

无机金属氧化物纳米结构的调控对有机-无机杂化太阳能电池性能至关重要。在无机金属氧化物中,由于ZnO具有优异的光电性能,且其形貌易于调控,因而被广泛研究。溶胶凝胶法是制备ZnO最常用的方法之一,通过溶胶凝胶法可以将溶液简单地制备成均匀的薄膜。然而,使用一般的溶胶凝胶法制备的ZnO结构,包括形貌和结构尺寸等都有局限性。一种优化ZnO薄膜结构的方法即在溶胶凝胶法中引入两亲性的二嵌段共聚物。其中,亲水性的嵌段和亲油性的嵌段由共价键连接在一起,在共混溶液中会形成微相分离,优化ZnO同给体材料P3HT的界面。不同于通常使用的二嵌段共聚物,在该工作中我们使用一种新的功能性的嵌段共聚物P3HT-b-PEO,其中P3HT作为光吸收材料以及空穴传输材料,而PEO嵌段作为调控ZnO形貌的模板。混合溶液通过喷涂制备成均匀的有机-无机杂化异质结活性层[1]。该方法简单易行,且在制备过程中有利于节省试剂和能源消耗,为在柔性基底上大规模制备异质结ZnO/P3HT薄膜提供有效途径。

关键词：杂化薄膜两亲性二嵌段共聚物溶胶凝胶形貌调控

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Stability of mixed-halide wide bandgap perovskite solar cells: Strategies and progress

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Journal of Energy Chemistry 2021年第10期30卷 395-415,I0011页

作者： Lei Tao Jian Qiu Bo Sun Xiaojuan Wang Xueqin ran Lin Song Wei Shi Qi Zhong Ping Li Hui Zhang Yingdong Xia Peter Müller-Buschbaum Yonghua Chen Key Laboratory of flexible Electronics(KLOfE)&Institution of Advanced Materials(IAM) Nanjing Tech University(Nanjing Tech)Nanjing 211816JiangsuChina frontiers Science Center for flexible Electronics Xi’an Institute of Flexible Electronics(IFE)and Xi’an Institute of Biomedical Materials&EngineeringNorthwestern Polytechnical UniversityXi’an 710072ShaanxiChina Key Laboratory of Advanced Textile Materials&Manufacturing Technology Ministry of EducationZhejiang Sci-Tech UniversityHangzhou 310018ZhejiangChina lehrstuhl für funktionelle materialien Physik DepartmentTechnische Universität MünchenJames-Franck-Str.185748 GarchingGermany Heinz Maier-Leibnitz Zentrum(MLZ) Technische Universität MünchenLichtenbergstr.185748 GarchingGermany

Benefiting from the superior optoelectronic properties and low-cost manufacturing techniques,mixedhalide wide bandgap(WBG)perovskite solar cells(PSCs)are currently considered as ideal top cells for fabricating multi-junction or tandem solar cells,which are designed to beyond the Shockley-Queisser(S-Q)limit of single-junction solar cells.However,the poor long-term operational stability of WBG PSCs limits their further employment and hinders the marketization of multi-junction or tandem solar cells.In this review,recent progresses on improving environmental stability of mixed-halide WBG PSCs through different strategies,including compositional engineering,additive engineering,interface engineering,and other strategies,are summarized.Then,the outlook and potential direction are discussed and explored to promote the further development of WBG PSCs and their applications in multijunction or tandem solar cells.

关键词： Mixed halide perovskite Stability Tandem solar cells Wide bandgap perovskite

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Scalable Synthesis of Hierarchical Antimony/Carbon Micro-/Nanohybrid Lithium/Sodium-Ion Battery Anodes Based on Dimethacrylate Monomer

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Acta Metallurgica Sinica(English Letters) 2018年第9期31卷 910-922页

作者： Su-Zhe Liang Xiao-Yan Wang Yong-Gao Xia Sen-Lin Xia Ezzeldin Metwalli Bao Qiu Qing Ji Shan-Shan Yin Shuang Xie Kai fang Lu-Yao Zheng Mei-Mei Wang Xiu-Xia Zuo ru-Jiang Li Zhao-Ping Liu Jin Zhu Peter Müller-Buschbaum Ya-Jun Cheng North University of China Taiyuan 030051China Ningbo Institute of Materials Technology and Engineering Chinese Academy of SciencesNingbo 315201China University of Chinese Academy of Sciences Beijing 100049China Physik-Department Lehrstuhl fur Funktionelle MaterialienTechnische Universitat MunchenJames-Franck-Str.185748 GarchingGermany The University of Nottingham Ningbo China Ningbo 315100China Nano Science and Technology Institute University ofScience and Technology of ChinaSuzhou 215123China Department of Materials University of OxfordParks RdOxford OX1 3PHUK

A facile scalable synthesis of hierarchical Sb/C micro-/nanohybrid has been addressed in this work, which possesses the advantages of both micrometer and nanometer scale structures as lithium-ion battery anode. Difunctional methacrylate monomers are used as solvent and carbon source as well. Liquid precursor of antimony（III） n-butoxide is dissolved in the resin monomer solution, and further incorporated into the cross-linking polymer network via photo polymerization. Through calcination in argon/hydrogen atmosphere, antimony nanoparticles are in situ formed by carbothermal reduction, and homogeneously embedded in the in situ formed micrometer sized carbon matrix. The morphology, structure, crys- tallinity, spatial dispersion, composition, and electrochemical performance of the Sb/C micro-/nanohybrid are systemati- cally investigated. The cyclic and rate performance of the Sb/C micro-/nanohybrid anode have been effectively improved compared to the pure carbon anode. A reversible capacity of 362 mAh g-1 is achieved with a reasonable mass loading density after 300 cycles at 66 mA g-1, corresponding to capacity retention of 79%. With reducing mass loading density, the reversible capacity reaches 793 mAh g-1 after 100 cycles. Moreover, the electrochemical performance of Sb/C micro-/nanohybrid as sodium-ion battery anode is also investigated in this study.

关键词： Antimony/carbon micro-/nanohybrid Lithium-ion battery Sodium-ion battery. Anode Methacrylate Photo polymerization Thermosetting resin

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residual solvent extraction via chemical displacement for efficient and stable perovskite solar cells

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Journal of Energy Chemistry 2021年第10期30卷 8-14,I0001页

作者： Min fang Lei Tao Wen Wu Qi Wei Yingdong Xia Ping Li Xueqin ran Qi Zhong Guichuan Xing Lin Song Peter Müller-Buschbaum Hui Zhang Yonghua Chen Key Laboratory of flexible Electronics(KLOfE)&Institution of Advanced Materials(IAM) Nanjing Tech University(Nanjing Tech)Nanjing 211816JiangsuChina frontiers Science Center for flexible Electronics Xi’an Institute of Flexible Electronics(IFE)and Xi’an Institute of Biomedical Materials&EngineeringNorthwestern Polytechnical UniversityXi’an 710072ShaanxiChina Key Laboratory of Advanced Textile Materials&Manufacturing Technology Ministry of EducationZhejiang Sci-Tech UniversityHangzhou 310018ZhejiangChina Institute of Joint Key Laboratory of the Applied Physics and Materials Engineering University of MacaoAvenida da UniversidadeTaipa 999078MacaoChina lehrstuhl für funktionelle materialien Physik DepartmentTechnische Universität München.James-Franck-Str.185748 GarchingGermany Heinz Maier-Leibnitz Zentrum(MLZ) Technische Universität MünchenLichtenbergstr.185748 GarchingGermany

Solvent residue is inevitable to occur in solution processed thin films,but its influence on the thin film quality has not been identified and addressed to date.Methylammonium acetate(MAAc)ionic liquid has recently been realized as an environmentally friendly solvent for solution processed perovskites.The specific high viscosity,low vapor pressure and strong association with perovskite precursor of the MAAc solvent is a double-edged sword,which endowed an advantageously ambient air operational and anti-solvent free perovskite deposition,but the MAAc is likely to be retained within the film and bring in detrimental effects on device performance of the corresponding solar cells.Herein,we reported a novel route to eliminate the residual solvent via a facial hydrochloric acid(HCl)annealing post-treatment(HAAP).In particular,chemical displacement reaction between the incorporated HCl and residual MAAc can be initiated to form volatile MACl and HAc,efficiently extracting MAAc residue.In the meanwhile,the stimulated mass transport via downward penetration and upward escape can trigger secondary perovskite growth with enlarged grain size and smoothened surface,leading to reduced defect state and improved interfacial contact intimacy,and also partial chloride ions are able to enter the crystal lattice to stabilize perovskite phase structure.As a result,a champion efficiency up to20.78%originating from enhanced Voc was achieved,and more than 96%of its initial efficiency can be maintained after 1000 h shelf-storage.

关键词： Perovskite Solar cells Solvent residue Methylammonium acetate Post-treatment Chemical displacement

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