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Unraveling the impacts of intermolecular interaction on morphology evolution for highly efficient organic solar cells and modules

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Science china chemistry 2025年第1期68卷 264-272页

作者： Xueqing Ma Yingying cheng Yuqiang Liu Xinming Zheng Guangliu Ran Hongxiang Li Xinyue cui Andong Zhang Wenkai Zhang Pei cheng Wenchao Huang Zhishan Bo Beijing Key Laboratory of energy conversion and Storage Materials College of Chemistry Beijing Normal University college of textiles and clothing State Key Laboratory of Bio-fibers and Eco-textiles Qingdao University Key State Laboratory of Advanced technology for Materials Synthesis and Processing School of Materials Science and EngineeringWuhan University of Technology Department of Physics and Applied Optics Beijing Area Major Laboratory Center for Advanced Quantum Studies Beijing Normal University State Key Laboratory of Polymer Materials engineering College of Polymer Science and Engineering Sichuan University

Understanding the effect of intermolecular interaction on the growth dynamic of active layers is critical for advancing organic solar cells(OScs). However, the diverse structure of donors and acceptors makes the research challenging. Additives with customizable structures and properties could simplify this complexity. Herein, we meticulously tailor two additives of 3,4-ethylenedioxythiophene(eDOt) and 2,5-dibromo-3,4-ethylenedioxythiophene(DBeDOt), possessing distinct intermolecular interaction features to elaborate the inherent relationship. It is found that varied interaction strengths can alter film formation processes. the enhanced intermolecular interaction between the DBeDOt and non-fullerene acceptor BtP-e c9-4F results in pre-aggregation and longer crystallization duration of BtP-e c9-4F, facilitating the formation of films with compact molecular packing and decent phase separation. thus, exciton dissociation and charge transport become more efficient. Finally, devices processed with DBeDOt exhibit a remarkable power conversion efficiency of 19.35% in small-area OScs and 14.11% in bladecoated 5 cm × 5 cm organic solar mini-modules. especially, OScs can maintain 80% of their initial efficiency after continuous annealing at 85 °c for over 2,100 h.

关键词： organic solar cell non-fullerene acceptor film growth molecular packing intermolecular interaction

“Zero‑Strain” NiNb_(2)O_(6) Fibers for All‑climate Lithium Storage

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Nano-Micro Letters 2025年第1期17卷 348-360页

作者： Yan Zhao Qiang Yuan Liting Yang Guisheng Liang Yifeng cheng Limin Wu chunfu Lin Renchao che college of Physics Donghua UniversityShanghai 201620People’s Republic of China School of Materials Science and engineering Institute of Materials for Energy and EnvironmentQingdao UniversityQingdao 266071People’s Republic of China Laboratory of Advanced Materials Shanghai Key Laboratory of Molecular Catalysis and Innovative MaterialsAcademy for Engineering&TechnologyFudan UniversityShanghai 200438People’s Republic of China Zhejiang Laboratory Hangzhou 311100People’s Republic of China Inner Mongolia University Hohhot 010021People’s Republic of China

Niobates are promising all-climate Li^(+)-storage anode material due to their fast charge transport,large specific capacities,and resistance to electrolyte ***,their moderate unit-cellvolume expansion(generally 5%–10%)during Li^(+)storage causes unsatisfactory long-term ***,“zero-strain”NiNb_(2)O_(6) fibers are explored as a new anode material with comprehensively good electrochemical *** Li^(+)storage,the expansion of electrochemical inactive NiO_(6) octahedra almost fully offsets the shrinkage of active NbO_(6) octahedra through reversible O *** superior volume-accommodation capability of the NiO_(6) layers guarantees the“zero-strain”behavior of NiNb_(2)O_(6) in a broad temperature range(0.53%//0.51%//0.74%at 25//−10//60℃),leading to the excellent cyclability of the NiNb_(2)O_(6) fibers(92.8%//99.2%//91.1%capacity retention after 1000//2000//1000 cycles at 10c and 25//−10//60℃).this NiNb_(2)O_(6) material further exhibits a large reversible capacity(300//184//318 mAh g−1 at 0.1c and 25//−10//60℃)and outstanding rate performance(10 to 0.5c capacity percentage of 64.3%//50.0%//65.4%at 25//−10//60℃).therefore,the NiNb_(2)O_(6) fibers are especially suitable for large-capacity,fast-charging,long-life,and all-climate lithium-ion batteries.

关键词： NiNb_(2)O_(6)porous fiber “Zero-strain”mechanism electrochemical property Harsh-temperature operation Operando characterization

Spontaneous Orientation Polarization of Anisotropic equivalent Dipoles Harnessed by entropy engineering for Ultra‑thin electromagnetic Wave Absorber

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Nano-Micro Letters 2025年第1期17卷 424-438页

作者： Honghan Wang Xinyu Xiao Shangru Zhai chuang Xue Guangping Zheng Deqing Zhang Renchao che Junye cheng Liaoning Key Lab of Lignocellulose chemistry and BioMaterials Liaoning Collaborative Innovation Center for Lignocellulosic BiorefinerySchool of Light Industry and Chemical EngineeringDalian Polytechnic UniversityDalian 116034People’s Republic of China School of Life Science and Biotechnology Dalian University of TechnologyDalian 116024People’s Republic of China Department of Mechanical engineering Hong Kong Polytechnic UniversityHung HomKowloonHong Kong 999077People’s Republic of China School of Materials Science and engineering Qiqihar UniversityQiqihar 161006People’s Republic of China Laboratory of Advanced Materials Shanghai Key Lab of Molecular Catalysis and Innovative MaterialsAcademy for Engineering&TechnologyFudan UniversityShanghai 200438People’s Republic of China Department of Materials Science Shenzhen MSU-BIT UniversityShenzhen 517182People’s Republic of China

the synthesis of carbon supporter/nanoscale high-entropy alloys(HeAs)electromagnetic response composites by carbothermal shock method has been identified as an advanced strategy for the collaborative competition engineering of conductive/dielectric *** migration modes within HeAs as manipulated by the electronegativity,valence electron configurations and molar proportions of constituent elements determine the steady state and efficiency of equivalent ***,enlightened by skin-like effect,a reformative carbothermal shock method using carbonized cellulose paper(ccP)as carbon supporter is used to preserve the oxygencontaining functional groups(O·)of carbonized cellulose fibers(ccF).Nucleation of HeAs and construction of emblematic shell-core ccF/HeAs heterointerfaces are inextricably linked to carbon metabolism induced by O·.Meanwhile,the electron migration mode of switchable electronrich sites promotes the orientation polarization of anisotropic equivalent *** virtue of the reinforcement strategy,ccP/HeAs composite prepared by 35%molar ratio of Mn element(ccP/HeAs-Mn_(2.15))achieves efficient electromagnetic wave(eMW)absorption of−51.35 dB at an ultra-thin thickness of 1.03 *** mechanisms of the resulting dielectric properties of HeAs-based eMW absorbing materials are elucidated by combining theoretical calculations with experimental characterizations,which provide theoretical bases and feasible strategies for the simulation and practical application of electromagnetic functional devices(e.g.,ultra-wideband bandpass filter).

关键词： High-entropy alloys carbothermal shock Switchable electron migration modes emblematic shell-core heterointerfaces Ultra-thin thickness

Gradient‑Layered MXene/Hollow Lignin Nanospheres Architecture Design for Flexible and Stretchable Supercapacitors

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Nano-Micro Letters 2025年第2期17卷 447-462页

作者： Haonan Zhang cheng Hao tongtong Fu Dian Yu Jane Howe Kaiwen chen Ning Yan Hao Ren Huamin Zhai Jiangsu Provincial Key Lab of Sustainable Pulp and Paper technology and Biomass Materials NanJing Forestry UniversityNanjing 210037People’s Republic of China Department of chemical engineering and Applied chemistry University of Toronto200 College StreetTorontoON M5S 3E5Canada Department of Materials Science and engineering University of Toronto184 College StreetTorontoON M5S 3E4Canada college of Materials Science and engineering Nanjing Forestry UniversityNanjing 210037People’s Republic of China

With the rapid development of flexible wearable electronics,the demand for stretchable energy storage devices has *** this work,a novel gradient-layered architecture was design based on single-pore hollow lignin nanospheres(HLNPs)-intercalated two-dimensional transition metal carbide(ti_(3)c_(2)t_(x) MXene)for fabricating highly stretchable and durable *** depositing and inserting HLNPs in the MXene layers with a bottom-up decreasing gradient,a multilayered porous MXene structure with smooth ion channels was constructed by reducing the overstacking of MXene ***,the micro-chamber architecture of thin-walled lignin nanospheres effectively extended the contact area between lignin and MXene to improve ion and electron accessibility,thus better utilizing the pseudocapacitive property of *** these strategies effectively enhanced the capacitive performance of the *** addition,HLNPs,which acted as a protective phase for MXene layer,enhanced mechanical properties of the wrinkled stretchable electrodes by releasing stress through slip and deformation during the stretch-release cycling and greatly improved the structural integrity and capacitive stability of the *** electrodes and symmetric flexible all-solid-state supercapacitors capable of enduring 600%uniaxial tensile strain were developed with high specific capacitances of 1273 mF cm^(−2)(241 F g^(−1))and 514 mF cm^(−2)(95 F g^(−1)),***,their capacitances were well preserved after 1000 times of 600%stretch-release *** study showcased new possibilities of incorporating biobased lignin nanospheres in energy storage devices to fabricate stretchable devices leveraging synergies among various two-dimensional nanomaterials.

关键词： Hollow lignin nanospheres MXene Gradient-layered architecture Wrinkled electrodes Stretchable supercapacitors

crystallization Modulation and Holistic Passivation enables efficient two‑terminal Perovskite/cuIn(Ga)Se_(2)tandem Solar cells

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Nano-Micro Letters 2025年第1期17卷 205-215页

作者： cong Geng Kuanxiang Zhang changhua Wang chung Hsien Wu Jiwen Jiang Fei Long Liyuan Han Qifeng Han Yi‑Bing cheng Yong Peng State Key Laboratory of Advanced technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070People’s Republic of China triumph Photovoltaic Materials co. Ltd.No.1001 Yannan AvenueHigh‑Tech Development DistrictBengbuAnhui 233000People’s Republic of China college of Materials Science and engineering Guilin University of TechnologyGuilin 541004People’s Republic of China State Key Laboratory of Metal Matrix composites Shanghai Jiao Tong UniversityShanghai 200240People’s Republic of China

two-terminal(2-t)perovskite(PVK)/cuIn(Ga)Se_(2)(cIGS)tandem solar cells(tScs)have been considered as an ideal tandem cell because of their best bandgap matching regarding to Shockley–Queisser(S–Q)***,the nature of the irregular rough morphology of commercial cIGS prevents people from improving tandem device *** this paper,D-homoserine lactone hydrochloride is proven to improve coverage of PVK materials on irregular rough cIGS surfaces and also passivate bulk defects by modulating the growth of PVK *** addition,the minority carriers near the PVK/c60 interface and the incompletely passivated trap states caused interface recombination.A surface reconstruction with 2-thiopheneethylammonium iodide and N,N-dimethylformamide assisted passivates the defect sites located at the surface and grain ***,LiF is used to create this field effect,repelling hole carriers away from the PVK and c60 interface and thus reducing *** a result,a 2-t PVK/cIGS tandem yielded a power conversion efficiency of 24.6%(0.16 cm^(2)),one of the highest results for 2-t PVK/cIGS tScs to our *** validation underscores the potential of our methodology in achieving superior performance in PVK/cIGS tandem solar cells.

关键词： PVK/cIGS tScs Irregular rough surfaces Modulating the growth PVK/c60 interface recombination

Which Inspection Approach Is Better to Prevent Drug Fraud: Announced or Unannounced?

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Journal of Systems Science & complexity 2018年第6期31卷 1571-1590页

作者： ZHANG Manman ZHANG Juliang cheng t.c.e. SALLAN Jose Maria HUA Guowei Department of Logistics Management School of Economics and ManagementBeijing Jiaotong UniversityBeijing 100044China. Department of Logistics and Maritime Studies The Hong Kong Polytechnic UniversityHung HornKowloonHong KongChina Department d'Organizacio d'empreses Universitat Politecnica de CatalunyaTerrassa 08222Spain.

In recent years,there are many crimes related drug fraud occuring in china and many experts think that the main cause is that china Food and Drug Administration (cFDA)adopts announced inspection (AI).In order to circumvent this difficulty,cFDA has exploited unannounced inspection (UI)since *** this paper,the authors study the problem of which one performs better, AI or ***,the authors consider a supervisor,which decides the inspection approach,inspection strength and punishment to force the firm to put self-inspection effort to meet the requirements of Good Manufacturing Practice,and a firm,which produces a drug and decides its self-inspection effort. the authors use game theory to model this problem,characterize the equilibrium policies under AI, and compare the effects of the two approaches on preventing drug fraud under complete and incomplete *** results show that under the complete information,UI performs better if the firm's technical level and the inspection cost are low and AI performs better *** the supervisor doesn't know the firm's technical level,if the low technical level is high,AI performs ***, UI performs better if the inspection cost is low and AI performs better if the inspection cost is high.

关键词： Drug inspection game theory healthcare incomplete information public policy.

Decision and coordination of an e-commerce Supply chain considering Returns and Network externalities

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Journal of Systems Science and Systems engineering 2024年第5期33卷 552-575页

作者： Liang Shen Fei Lin Yuyan Wang Luping Ding t.c.e.cheng Dexia Wang School of Public Finance and taxation Shandong University of Finance and Economicsjinan 250014China bschool of Management Science and engineering Shandong University of Finance and EconomicsJinan 250014China PolyU Business School The Hong Kong Polytechnic UniversityHung HomKowloonHong Kong 999077China

considering the large number of returns in online sales and the network externalities of e-platforms,we develop a decentralized model and a centralized model to explore the impacts of returns and network externalities on e-commerce supply chain(ecSc)*** show that in the decentralized model,the service level,price,market demand,and ecSc members’profits increase with the network externality ***,the service level and price increase,while the market demand and ecSc members’profits decrease with the product return *** centralized model is the optimal operating mode when it is properly *** design the“commission and return cost-sharing”contract to optimize ecSc,in which the proportion of the e-platform’s sharing of the return handling cost is exactly equal to the proportion of the system profit after *** on the decentralized model,we develop two extended models in which we endogenize the impacts of the service level and return rate on the network externality *** comparisons between the extended and decentralized models,we show that high-quality service can improve ecSc’s profitability,while a high return rate hurts its economic performance.

关键词： e-commerce supply chain coordination mechanism network externalities return products

the effect of Unannounced Inspection on Prevention of Drug Fraud

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Journal of Systems Science and Systems engineering 2019年第1期28卷 63-90页

作者： Manman Zhang Juliang Zhang t.c.e. cheng Guowei Hua Xiaojie Yan Yi Liu School of economics and Management Beijing Jiaotong University Beijing 100044 China Department of Logistics and Maritime Studies The Hong Kong Polytechnic University Kowloon Hong Kong China Academy of Mathematics and Systems Science Chinese Academy of Sciences Beijing 100190 China

Alarge number of incidents related to fake/inferior-quality drugs have occurred in china in recent years. In order to reduce drug crimes, the china Food and Drug Administration (cFDA) has exploited the new supervision approach, i.e., unannounced inspection (UI), since September 2014. However, the effectiveness of UI in driving drug producers to put more effort into meeting the requirements of Good Manufacturing Practice (GMP) is yet to be ascertained. In this paper we apply game theory to study the effects of UI on the prevention of drug fraud, drug producers’ profits, and social welfare under scenarios of complete and incomplete information. We show that UI is not always an effective way of supervision. Specifically, if the upper bound on the punishment is not very large, UI can drive the firmto make the largest self-supervision effort only when the firm’s technical level is high and the supervision cost is low. Otherwise, UI cannot drive the firm to make the largest self-supervision effort. Under incomplete information, firms with a high technical level would adopt more self-supervision and make more profit than those with a low technical level. Moreover, we design a new mechanism under incomplete information that can incentive drug producers to make greater self-supervision effort to meet the requirements of GMP under certain conditions.

关键词： Drug supervision healthcare system game theory Nash equilibrium incomplete information mechanism design

MULtI-FAcILItY ORDeReD MeDIAN PROBLeMS IN DIRecteD NetWORKS

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Journal of Systems Science & complexity 2011年第1期24卷 61-67页

作者： Huajun tANG t. c. edwin cheng c. t. NG Faculty of Management and Administration Macao University of Science and Technology Macao China Department of Logistics and Maritime Studies The Hong Kong Polytechnic University Hong Kong China

this paper uses a finite dominating set （FDS） to investigate the multi-facility ordered median problem （OMP） in a strongly connected directed network. the authors first prove that the multi-facility OMP has an FDS in the node set, which not only generalizes the FDS result provided by Kalcsics, et al. （2002）, but also extends the FDS result from the single-facility case to the multiple case, filling an important gap. then, based on this FDS result, the authors develop an exact algorithm to solve the problem. However, if the number of facilities is large, it is not practical to find the optimal solution, because the multi-facility OMP in directed networks is NP-hard. Hence, we present a constant-approximation algorithm for the p-median problem in directed networks. Finally, we pose an open problem for future research.

关键词： Algorithms finite dominating sets multi-facility ordered median problem pseudoequilibria.