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100 cm^(2) Organic Photovoltaic Cells with 23%efficiency under Indoor Illumination

Chinese Journal of Polymer Science 2022年第8期40卷 979-988,I0011页

作者： Yong Cui Hui-Feng Yao Ye Xu Peng-Qing Bi Jian-Qi Zhang Tao Zhang Ling Hong Zhi-Hao Chen Zhi-Xiang Wei Xiao-Tao Hao Jian-Hui Hou Laboratory of Polymer Physics and Chemistry Beijing National Laboratory for Molecular SciencesCAS Research/Education Center for Excellence in Molecular SciencesInstitute of ChemistryChinese Academy of SciencesBeijing100190China University of Chinese Academy of Sciences Beijing100049China CAS key laboratory of nanosystem and hierarchical fabrication CAS Center for Excellence in NanoscienceNational Center for Nanoscience and TechnologyBeijing100190China School of Physics State Key Laboratory of Crystal MaterialsShandong UniversityJinan250100China

The application of organic photovoltaic(OPV)cells to drive off-grid microelectronic devices under indoor light has attracted broad attention.As organic semiconductors intrinsically have less ordered intermolecular packing than inorganic materials,the relatively larger energetic disorder is one of the main results that limit the photovoltaic efficiency of the OPV cells at low carrier density.Here,we optimize the alkyl chains of non-fullerene acceptors to get suppressed energetic disorder.We find the optimal acceptor DTz-R1 with the shortest alkyl chain has the strongest crystalline property and lowest energetic disorder.As a result,over 26%efficiency is recorded for the 1 cm^(2) OPV cells under a light-emitting diode illumination of 500 lux.We also fabricate a 100 cm^(2) cell device and get a PCE of 23.0%,which is an outstanding value for large-area OPV cells.These results suggest that modulation of the energetic disorder is of great importance for further improving the efficiency of OPV cells,especially for indoor applications.

关键词： Organic photovoltaic cells Low light intensity Energetic disorder Energy loss power conversion efficiency

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Beyond two-dimension: One-and zero-dimensional halide perovskites as new-generation passivators for high-performance perovskite solar cells

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能源化学:英文版 2023年第8期83卷 189-208,I0007页

作者： Yuanyuan Zhao Huimin Xiang Ran Ran Wei Zhou Wei Wang Zongping Shao State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical EngineeringNanjing Tech UniversityNanjing 210009JiangsuChina WA School of Mines:Minerals Energy and Chemical EngineeringCurtin UniversityPerthWA 6845Australia

Perovskite solar cells(PSCs) as a rising star in the photovoltaic field have received rapidly increasing attention recently due to the boosting power conversion efficiencies(PCEs) from 3.8% to 25.7% in the last13 years. Nevertheless, the conventional PSCs with three-dimensional(3D) halide perovskites as light absorbers suffer from inferior PCEs and poor durability under sunlight, high-temperature and humid conditions due to the high defect amount and structural instability of 3D perovskites, respectively. To tackle these crucial issues, lower-dimensional halide perovskites including zero-dimensional(0D), onedimensional(1D), and two-dimensional(2D) perovskites have been employed as efficient passivators to boost the PCEs and durability of 3D-PSCs due to the high structural stability and superior resistance against moisture, heat and sunlight. Therefore, in order to achieve better understanding about the advantages and superiorities of combining low-dimensional perovskites with their 3D counterparts in improving the PCEs and durability of 3D-PSCs, the recent advances in the development and fabrication of mixeddimensional PSCs with 1D/0D perovskites as passivators are summarized and discussed in the review.The superiority of 1D/0D perovskites as passivators over 2D counterparts, the passivation mechanism and the methods of 1D/0D perovskites are also presented and discussed. Furthermore, the rules to choose1D/0D perovskites or relevant spacer cations are also emphasized. On this basis, several specific strategies to design and fabricate mixed-dimensional PSCs with 1D/0D perovskites are presented and discussed.Finally, the crucial challenges and future research directions of mixed-dimensional PSCs with 1D/0D perovskites as passivators are also proposed and discussed. This review will provide some useful insights for the future development of high-efficiency and durable mixed-dimensional PSCs.

关键词： Perovskite solar cells Mixed-dimensional Passivators Stability power conversion efficiency

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Gadolinium-incorporated CsPbI_(2)Br for boosting efficiency and long-term stability of all-inorganic perovskite solar cells

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Journal of Energy Chemistry 2022年第7期31卷 9-17,I0001页

作者： Xingyu Pu Jiabao Yang Tong Wang Shuaici Cheng Qi Cao Junsong Zhao Hui Chen Yixin Zhang Tingting Xu Ilhom Tojiboyev Hadi Salari Xuanhua Li State Key Laboratory of Solidification Processing Center for Nano Energy MaterialsSchool of Materials Science and EngineeringNorthwestern Polytechnical UniversityXian710072.ShaanxiChina Queen Mary University of London Engineering School Northwestern Polytechnical UniversityXi’an 710129ShaanxiChina School of Chemistry and Chemical Engineering Northwestern Polytechnical UniversityXi’an 710129ShaanxiChina Institute Ion-Plasma and Laser Technologies Uzbekistan Academy of Sciences100125Durmon yuli 33TashkentUzbekistan Faculty of Physical Chemistry Shiraz UniversityShiraz 71345Iran

All-inorganic CsPbI_(2)Br perovskite solar cells(PSCs)have received extensive research interests recently.Nevertheless,their low efficiency and poor long-term stability are still obstacles for further commercial application.Herein,we demonstrate that high efficiency and exceptional long-term stability are realized by incorporating gadolinium(III)chloride(GdCl_(3))into the CsPbI_(2)Br perovskite film.The incorporation of GdCl_(3) enhances the Goldschmidt tolerance factor of CsPbI_(2)Br perovskite,yielding a dense perovskite film with small grains,thus the a-phase CsPbI_(2)Br is remarkably stabilized.Additionally,it is found that the GdCl_(3)-incorporated perovskite film achieves suppressed charge recombination and appropriate energy level alignment compared with the pristine CsPbI_(2)Br film.The noticeable increment in efficiency from14.01%(control PSC)to 16.24%is achieved for GdCl_(3)-incorporated PSC.Moreover,the nonencapsulated GdCl_(3)-incorporated PSC exhibits excellent environmental and thermal stability,remaining over 91%or90%of the original efficiency after 1200 h aging at 40%relative humidity or 480 h heating at 85℃ in nitrogen glove box respectively.The encapsulated GdCl_(3)-incorporated PSC presents an improved operational stability with over 88%of initial efficiency under maximum power point(MPP)tracking at 45℃ for1000 h.This work presents an effective ion-incorporation approach for boosting efficiency and long-term stability of all-inorganic PSCs.

关键词： All-inorganic perovskite CsPbI_(2)Br Gadolinium incorporation power conversion efficiency Long-term stability

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efficiency enhancement of Cs_(0.1)(CH_(3)NH_(3))_(0.9)PbI_(3) perovskite solar cell by surface passivation using iso-butyl ammonium iodide

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International Journal of Minerals,Metallurgy and Materials 2022年第11期29卷 1963-1970页

作者： Wakul Bumrungsan Kritsada Hongsith Vasan Yarangsi Pisith Kumnorkeaw Sukrit Sucharitakul Surachet Phaduangdhitidhada Supab Choopun Research Center in Physics and Astronomy Department of Physics and Materials Science Faculty of ScienceChiang Mai UniversityChiang Mai 50200Thailand Thailand Center Excellence in Physics Ministry of Higher EducationScienceResearch and InnovationBangkok 10400Thailand National Nanotechnology Center National Science and Technology Development AgencyPathum Thani 12120Thailand

efficiency enhancement of Cs_(0.1)(CH_(3)NH_(3))_(0.9)PbI_(3) solar cell devices was performed by using iso-butyl ammonium iodide(IBA)passivated on Cs_(0.1)(CH_(3)NH_(3))_(0.9)PbI_(3) films.The n-i-p structure of perovskite solar cell devices was fabricated with the structure of FTO/SnO_(2)/Cs_(0.1)(CH_(3)NH_(3))_(0.9)PbI_(3)(FTO,i.e.,fluorine doped tin oxide)and IBA/Spiro-OMeTAD/Ag.The effect of different weights of IBA passivated on Cs-doped perovskite solar cells(PSCs)was systematically investigated and compared with non-passivated devices.It was found that the 5-mg IBA-passivated devices exhibited a high power conversion efficiency(PCE)of 15.49%higher than 12.64%of non-IBA-passivated devices.The improvement of photovoltaic parameters of the 5-mg IBA-passivated device can be clearly observed compared to the Cs-doped device.The better performance of the IBA-passivated device can be confirmed by the reduction of PbI_(2) phase in the crystal structure,lower charge recombination rate,lower charge transfer resistance,and improved contact angle of perovskite films.Therefore,IBA passivation on Cs_(0.1)(CH_(3)NH)_(0.9)PbI_(3) is a promising technique to improve the efficiency of Cs-doped perovskite solar cells.

关键词： perovskite solar cell power conversion efficiency surface passivation cesium methylammonium lead iodide iso-butyl ammoni-um iodide

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A new perspective to develop regiorandom polymer acceptors with high active layer ductility,excellent device stability,and high efficiency approaching 17%

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Carbon Energy 2023年第2期5卷 216-224页

作者： Qunping Fan Ruijie Ma Wenyan Su Qinglian Zhu Zhenghui Luo Kai Chen Yabing Tang Francis RLin Yuxiang Li He Yan Chuluo Yang Alex K.-Y.Jen Wei Ma State Key Laboratory for Mechanical Behavior of Materials Xi'an Jiaotong UniversityXi'anShaanxiChina Department of Chemistry Hong Kong University of Science and TechnologyKowloonHong KongChina School of Materials Science and Engineering Xi'an University of Science and TechnologyXi'anShaanxiChina Shenzhen Key Laboratory of Polymer Science and Technology Shenzhen UniversityShenzhenGuangdongChina Department of Chemistry City University of Hong KongKowloonHong KongChina

The recently reported efficient polymerized small-molecule acceptors(PSMAs)usually adopt a regioregular backbone by polymerizing small-molecule acceptors precursors with a low-reactivity 5-brominated 3-(dicyanomethylidene)indan-1-one(IC)end group or its derivatives,leading to low molecular weight,and thus reduce active layer mechanical properties.Herein,a series of newly designed chlorinated PSMAs originating from isomeric IC end groups are developed by adjusting chlorinated positions and copolymerized sites on end groups to achieve high molecular weight,favorable intermolecular interaction,and improved physicochemical properties.Compared with regioregular PY2Se-Cl-o and PY2Se-Cl-m,regiorandom PY2Se-Cl-ran has a similar absorption profile,moderate lowest unoccupied molecular orbital level,and favorable intermolecular packing and crystallization properties.Moreover,the binary PM6:PY2Se-Cl-ran blend achieves better ductility with a crack-onset strain of 17.5% and improved power conversion efficiency(PCE)of 16.23% in all-polymer solar cells(all-PSCs)due to the higher molecular weight of PY2Se-Cl-ran and optimized blend morphology,while the ternary PM6:J71:PY2Se-Cl-ran blend offers an impressive PCE approaching 17% and excellent device stability,which are all crucial for potential practical applications of all-PSCs in wearable electronics.To date,the efficiency of 16.86% is the highest value reported for the regiorandom PSMAs-based all-PSCs and is also one of the best values reported for the all-PSCs.Our work provides a new perspective to develop efficient all-PSCs,with all high active layer ductility,impressive PCE,and excellent device stability,towards practical applications.

关键词： all-polymer solar cells chlorination ductility power conversion efficiency regiorandom polymer acceptors

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D-A-π-A organic dyes with fluorenyl-substituted bulky donor for efficient dye-sensitized solar cells

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Green Chemical Engineering 2023年第4期4卷 393-398页

作者： Weiwei Zhang Huiyun Jiang Miaojie Yu Jie Wang Dong Shi Wei-Hong Zhu Yongzhen Wu Key Laboratory for Advanced Materials and Institute of Fine Chemicals Joint International Research Laboratory of Precision Chemistry and Molecular EngineeringFeringa Nobel Prize Scientist Joint Research CenterFrontiers Science Center for Materiobiology and Dynamic ChemistrySchool of Chemistry and Molecular EngineeringEast China University of Science and TechnologyShanghai200237China School of Optoelectronic Science and Engineering University of Electronic Science and Technology of ChinaChengdu610054China

Improving light-harvesting efficiency and suppressing interfacial charge recombination are of paramount importance to the development of Cu(Ⅱ/Ⅰ)redox shuttle-based dye-sensitized solar cells(DSSCs).Here,we present a rational molecular engineering on D-A-π-A organic sensitizers featuring with fluorenyl-substituted bulky donor(HY57,HY60,and HY61)for Cu(Ⅱ/Ⅰ)mediated DSSCs.By gradually enhancing conjugation and rigidity of theπ-spacer and auxiliary acceptor moieties,the light-harvesting and electron-injection efficiencies can be simultaneously improved.The large size of fluorenyl-substituted arylamine donor together with abundant alkyl chains decorated on the molecular structures assist dense assembly of dye monolayer at surface of nanocrystalline TiO2,which largely suppress interfacial charge recombination losses.When applied in Cu(Ⅱ/Ⅰ)mediated DSSCs,the combination of an auxiliary acceptor of phenanthrene-fused-quinoxaline(PFQ)and aπ-spacer of cyclopentadithiophene(CPDT)in dye HY61 results in a simultaneous enhancement in short-circuit current(JSC)and open-circuit voltage(VOC),thus improving the power conversion efficiency(PCE)from 7.3%for reference dye HY59 to 10.3%for HY61.This study demonstrates that rigid and fused building block is promising towards constructing highly efficient organic sensitizers.

关键词： Dye-sensitized solar cells Fluorenyl-substituted bulky donor Phenanthrene-fused-quinoxaline Electron injection power conversion efficiency

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Recent progress in perovskite solar cells:material science

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Science China Chemistry 2023年第1期66卷 10-64页

作者： Jiang-Yang Shao Dongmei Li Jiangjian Shi Chuang Ma Yousheng Wang Xiaomin Liu Xianyuan Jiang Mengmeng Hao Luozheng Zhang Chang Liu Yiting Jiang Zhenhan Wang Yu-Wu Zhong Shengzhong(Frank)Liu Yaohua Mai Yongsheng Liu Yixin Zhao Zhijun Ning Lianzhou Wang Baomin Xu Lei Meng Zuqiang Bian Ziyi Ge Xiaowei Zhan Jingbi You Yongfang Li Qingbo Meng Beijing National Laboratory for Molecular Sciences CAS Research/Education Center for Excellence in Molecular SciencesInstitute of ChemistryChinese Academy of SciencesBeijing 100190China Laboratory for Renewable Energy(CAS) Beijing National Laboratory for Condensed Matter PhysicsInstitute of PhysicsChinese Academy of SciencesBeijing 100190China Key Laboratory of Applied Surface and Colloid Chemistry Ministry of EducationShaanxi Key Laboratory for Advanced Energy DevicesShaanxi Engineering Lab for Advanced Energy TechnologyInstitute for Advanced Energy MaterialsSchool of Materials Science and EngineeringShaanxi Normal UniversityXi’an 710119China Institute of New Energy Technology College of Information Science and TechnologyJinan UniversityGuangzhou 510632China School of Environmental Science and Engineering Shanghai Jiao Tong UniversityShanghai 200240China School of Physical Science and Technology Shanghai Tech UniversityShanghai 201210China Australian Institute for Bioengineering and Nanotechnology and School of Chemical Engineering The University of QueenslandSt LuciaBrisbaneQLD 4072Australia Department of Materials Science and Engineering Southern University of Science and TechnologyShenzhen 518055China Zhejiang Provincial Engineering Research Center of Energy Optoelectronic Materials and Devices Ningbo Institute of Materials Technology&EngineeringChinese Academy of SciencesNingbo 315201China Key Laboratory of Polymer Chemistry and Physics of Ministry of Education School of Materials Science and EngineeringPeking UniversityBeijing 100871China Key Laboratory of Semiconductor Materials Science Institute of SemiconductorsChinese Academy of SciencesBeijing 100083China School of Chemical Sciences University of Chinese Academy of SciencesBeijing 100049China Dalian National Laboratory for Clean Energy Collaborative Innovation Center of Chemistry for Energy Materials(iChEM)Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China Key Laboratory of Funct

Perovskite solar cells represent a promising third-generation photovoltaic technology with low fabrication cost and high power conversion efficiency.In light of the rapid development of perovskite materials and devices,a systematic survey on the latest advancements covering a broad range of related work is urgently needed.This review summarizes the recent major advances in the research of perovskite solar cells from a material science perspective.The discussed topics include the devices based on different type of perovskites(organic-inorganic hybrid,all-inorganic,and lead-free perovskite and perovskite quantum dots),the properties of perovskite defects,different type of charge transport materials(organic,polymeric,and inorganic hole transport materials and inorganic and organic electron transport materials),counter electrodes,and interfacial materials used to improve the efficiency and stability of devices.Most discussions focus on the key progresses reported within the recent five years.Meanwhile,the major issues limiting the production of perovskite solar cells and the prospects for the future development of related materials are discussed.

关键词： perovskite solar cells power conversion efficiency perovskite materials hole transport materials electron transport materials counter electrode materials interfacial functional materials defects

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Crystallographic Understanding of Photoelectric Properties for C_(60) Derivatives Applicable as Electron Transporting Materials in Perovskite Solar Cells

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Chemical Research in Chinese Universities 2022年第1期38卷 75-81页

作者： XING Zhou LI Shu-Hui XU Piao-Yang TIAN Han-Rui DENG Lin-Long YAO Yang-Rong CHEN Bin-Wen XIE Fang-Fang AN Ming-Wei YUN Da-Qin XIE Su-Yuan ZHENG Lan-Sun State Key Lab for Physical Chemistry of Solid Surfaces iChEM(Collaborative Innovation Center of Chemistry for Energy Materials)Department of ChemistryCollege of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005P.R.China Pen-Tung Sah Institute of Micro-Nano Science and Technology Xiamen UniversityXiamen 361005P.R.China College of Energy Xiamen UniversityXiamen 361005P.R.China

Hundreds of C60 derivatives stand out as electrontransporting materials(ETMs), for example, in perovskite solar cells(PSCs), due to their properties on electron extraction or defect passivation. However, it still lacks of guidelines to update C60-based ETMs with excellent photoelectric properties. In this work, crystallographic data of eight C60-based ETMs, including pristine C60 and the well-known PCBM as well as six newly synthesized fullerenes, are analyzed to establish the connections between derivatized structures and photoelectric properties for the typical carbon cluster of C60. In terms of packing centroid-centroid distance between neighboring carbon cages, the crystallographic data are useful for probing photoelectric properties, such as electrochemical properties, electron mobility and photovoltaic performances, and therefore facilitate to design novel C60-based ETMs for PSCs with high performances.

关键词： Perovskite solar cell(PSC) Electron transporting material(ETM) Fullerene power conversion efficiency Crystallographic understanding

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Stable Radical TEMPO Terminated Perylene Bisimide(PBI) Based Small Molecule as Cathode Interlayer for Efficient Organic Solar Cells

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Chemical Research in Chinese Universities 2023年第2期39卷 213-218页

作者： ZHANG Ziwei XIA Dongdong XIE Qian ZHAO Chaowei FANG Jie WU Yonggang LI Weiwei College of Chemistry and Environmental Science Hebei UniversityBaoding071002P.R.China Institute of Applied Chemistry Jiangxi Academy of SciencesNanchang330096P.R.China Beijing Advanced Innovation Center for Soft Matter Science and Engineering and State Key Laboratory of Organic-Inorganic Composites Beijing University of Chemical TechnologyBeijing100029P.R.China

By combining stable radical tetramethylpiperidine nitrogen oxide(TEMPO)as end groups and perylene bisimide(PBI)as the core,a small molecular cathode interlayer(CIL)(PBI-TEMPO)was synthesized.Detailed physical-chemical characterizations indicate that PBI-TEMPO can form smooth film,owns low unoccupied molecular orbital(LUMO)level of−3.67 eV and can reduce the work function of silver electrode.When using PBI-TEMPO as CIL in non-fullerene organic solar cells(OSCs),the PM6:BTP-4Cl based OSCs delivered high power conversion efficiencies(PCEs)up to 17.37%,higher than those using commercial PDINO CIL with PCEs of 16.95%.Further device characterizations indicate that PBI-TEMPO can facilitate more efficient exciton dissociation and reduce charge recombination,resulting in enhanced current density and fill factor.Moreover,PBI-TEMPO displays higher thermal stability than PDINO in solution.When PBI-TEMPO and PDINO solution were heated at 150℃ for 2 h and then were used as CIL in solar cells,PBI-TEMPO-based OSCs provided a PCE of 15%,while PDINO-based OSCs only showed a PCE of 10%.These results demonstrate that incorporating TEMPO into conjugated materials is a useful strategy to create new organic semiconductors for application in OSCs.

关键词： Tetramethylpiperidine nitrogen oxide(TEMPO) Perylene bisimide Cathode interlayer Organic solar cell power conversion efficiency

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Can two-dimensional graphdiyne-based materials be novel materials for perovskite solar cell applications?

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Materials Futures 2023年第2期2卷 142-151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 361021People’s Republic of China

Two-dimensional(2D)graphdiyne(GDY)-based materials have attracted attention in the solar cell research community owing to their unique physicochemical properties and hydrophobic nature which can serve as moisture resistance from the surrounding medium.Benefiting from these,the performance and stability ofperovskite solar cells(PSCs)can be greatly improved via the addition of 2D GDY-based materials.This mini-review summarizes the recent development of 2D GDY-based materials for PSC application.The roles of 2D GDY-based materials,such as hole transporting material,electron transporting material,dopant material in perovskite film and interfacial layer,are discussed in detail.Moreover,we provide future perspectives in this field,aiming to help further progress efficient and stable 2D GDY-based materials in PSCs.

关键词： two-dimensional material graphdiyne perovskite solar cells power conversion efficiency stability

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