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| 1 | Flexible, transparent nanocellulose paper-based perovskite solar cells显示文摘Recently perovskite solar cells(PSCs),as photoelectric conversion devices,exhibit excellent power conversion efficiency(PCE)and low-processing cost,and have become one of the most promising devices to replace conventional silicon-based solar cells and address current pressing energy issues.Among them,the flexible PSCs are especially more widely applicable and may propel the rapid advancements of wearable electronics,causing a significant paradigm shift in consumer electronics.Current flexible PSCs use non-biodegradable petroleum-based polymer substrates,discarding of which will aggravate“white pollution”.Therefore,development of green,biodegradable and low-cost flexible substrates will provide a great alternative to flexible PSCs.Here we have developed transparent nanocellulose paper(NCP)with coating of acrylic resin as substrates to fabricate flexible PSCs,which are biodegradable and easily disposable.The PCE of these NCP-based PSCs reached 4.25%,while the power per weight(the ratio of power to device weight)was as high as 0.56 W g^(–1).The flexible PSCs also showed good stability,retaining>80%of original efficiency after 50 times of bending.The NCP-based substrates can also be applied to other electronic systems,which may prosper next-generation green flexible electronics. | Lei Gao Lingfeng Chao Meihui Hou Jin Liang Yonghua Chen Hai-Dong Yu Wei Huang | 2019 | npj Flexible Electronics2019，3，1： | 5 |
| 2 | Recent progress on low dimensional perovskite solar cells显示文摘Low dimensional perovskites have recently attracted much attention due to their vertical growth of crystalline orientation, excellent film morphology, and long-term humidity, light, and heat stability. However, low dimensional perovskites suffer from low power conversion efficiency(PCE) with respect to their three dimensional analogues. Therefore, it is imperative to find excellent low-dimensional perovskite materials for improving the PCE. Previous work has demonstrated that bulkier organic molecules,e.g., C_6 H_5(CH_2)_2 NH_3^+(PEA^+), CH_3(CH_2)_3 NH_3^+(n-BA+, iso-BA+), C_2H_4NH_3^+, and polyethylenimine cations(PEI+), play an important role in the formation of low-dimensional perovskites. In this review, we review the recent development of low dimensional perovskites for solar cells application in terms of film preparation, photophysics, and stability of perovskites, as well as the related device structure and physics. We have also discussed the future development of low-dimensional perovskites from materials design, fabrication processes, and device structure. | Lingfeng Chao Ze Wang Yingdong Xia Yonghua Chen Wei Huang | 2018 | Journal of Energy Chemistry2018，27，4： | 3 |
| 3 | The electromechanical features of LiNbO_(3) crystal for potential high temperature piezoelectric applications显示文摘Lithium niobate(LiNbO_(3),LN)crystal is a multi-functional material with favorable piezoelectric,nonlinear optical and electro-optic properties.In this study,the electromechanical properties of the radial extensional(RE)and the thickness extensional(TE)modes of the congruent LN are studied and the temperature dependent behaviors are revealed.The RE mode electromechanical coupling factors(kp)for the Y-and Z-oriented discs are calculated and found to be 3.8%and 24.7%,respectively,which are nearly the same as the experimental results of 3.8%and 25.2%,respectively.The maximum RE and thickness shear(TS)modes electromechanical coupling factors are obtained to be 47.6%and 68.5%for the Yx/25and Yx/167crystal cuts,respectively.The LN crystal possesses good temperature stability of the electromechanical coupling factors(RE and TE modes)from 20℃ to 500℃,where the variations of kp and kt for the Y-oriented discs are<8.0%and<1.8%,respectively. | Feifei Chen Lingfeng Kong Wei Song Chao Jiang Shiwei Tian Fapeng Yu Lifeng Qin Xian Zhao | 2019 | Journal of Materiomics2019，5，1： | 3 |
| 4 | Origin of High Efficiency and Long-Term Stability in Ionic Liquid Perovskite Photovoltaic显示文摘Environment-friendly protic amine carboxylic acid ionic liquids(ILs)as solvents is a significant breakthrough with respect to traditional highly coordinating and toxic solvents in achieving efficient and stable perovskite solar cells(PSCs)with a simple one-step air processing and without an antisolvent treatment approach.However,it remains mysterious for the improved efficiency and stability of PSCs without any passivation strategy.Here,we unambiguously demonstrate that the three functions of solvents,additive,and passivation are present for protic amine carboxylic acid ILs.We found that the ILs have the capability to dissolve a series of perovskite precursors,induce oriented crystallization,and chemically passivate the grain boundaries.This is attributed to the unique molecular structure of ILs with carbonyl and amine groups,allowing for strong interaction with perovskite precursors by forming C=O…Pb chelate bonds and N-H…I hydrogen bonds in both solution and film.This finding is generic in nature with extension to a wide range of IL-based perovskite optoelectronics. | Lingfeng Chao Tingting Niu Hao Gu Yingguo Yang Qi Wei Yingdong Xia Wei Hui Shouwei Zuo Zhaohua Zhu Chengjie Pei Xiaodong Li Jing Zhang Junfeng Fang Guichuan Xing Hai Li Xiao Huang Xingyu Gao Chenxin Ran Lin Song Li Fu Yonghua Chen Wei Huang | 2020 | Research2020，，1： | 2 |
| 5 | Two‑Dimensional Black Phosphorus Nanomaterials:Emerging Advances in Electrochemical Energy Storage Science显示文摘Two-dimensional black phosphorus(2D BP),well known as phosphorene,has triggered tremendous attention since the first discovery in 2014.The unique puckered monolayer structure endows 2D BP intriguing properties,which facilitate its potential applications in various fields,such as catalyst,energy storage,sensor,etc.Owing to the large surface area,good electric conductivity,and high theoretical specific capacity,2D BP has been widely studied as electrode materials and significantly enhanced the performance of energy storage devices.With the rapid development of energy storage devices based on 2D BP,a timely review on this topic is in demand to further extend the application of 2D BP in energy storage.In this review,recent advances in experimental and theoretical development of 2D BP are presented along with its structures,properties,and synthetic methods.Particularly,their emerging applications in electrochemical energy storage,including Li−/K−/Mg−/Na-ion,Li–S batteries,and supercapacitors,are systematically summarized with milestones as well as the challenges.Benefited from the fast-growing dynamic investigation of 2D BP,some possible improvements and constructive perspectives are provided to guide the design of 2D BP-based energy storage devices with high performance. | Junye Cheng Lingfeng Gao Tian Li Shan Mei Cong Wang Bo Wen Weichun Huang Chao Li Guangping Zheng Hao Wang Han Zhang | 2020 | Nano-Micro Letters2020，12，12： | 1 |
| 6 | Ionic Liquid for Perovskite Solar Cells:An Emerging Solvent Engineering Technology显示文摘CONSPECTUS:Perovskite solar cells(PSCs)have,in recent years,become one of the most in-depth photovoltaic materials in many different disciplines due to their long-range charge carrier diffusion lengths,strong light absorption,easy tuning of the band gaps,low defect density,and solution processability.The power conversion efficiency(PCE)of single-junction PSCs has reached a certified value of 25.5%,which has caught up with or even surpassed traditional photovoltaic technologies,such as silicon(Si)solar cells,thin film solar cell,etc.In addition to the performance of PSCs comparable to traditional photovoltaic technology,its biggest feature is that it can be prepared by a solution method.The preparation process of the solution method simplify the film preparation process and greatly reduce the preparation cost.In addition,the solution method provides a favorable option for the energy supply of flexible wearable devices in the future. | Lingfeng Chao Tingting Niu Yingdong Xia Yonghua Chen Wei Huang | 2021 | Accounts of Materials Research2021，2，11： | 1 |
| 7 | Experimental and Theoretical Study on CHF of a Ultra-Supercritical Circulating Fluidized Bed Boiler Water-Wall Tube at near-Critical Pressures显示文摘The experimental and theoretical research on the critical heat flux(CHF)in a uniformly heated water-wall tube of the efficient ultra-supercritical circulating fluidized bed(USCFB)boiler has been conducted.In particular,the experimental pressure varies from 18 MPa to 21 MPa,which is from 0.814Pcr–0.95Pcr(Pcr:critical pressure).The mass flux varies from 310 kg·m^(–2)·s^(–1)to 550 kg·m^(–2)·s^(–1).The inlet sub-cooling temperatures vary from 5°C to 10°C.The material of the tube is 12Cr1MoVg.From experimental investigation,the near critical pressure CHF test data of water are obtained.We find that the CHF mainly occurs when the vapor qualities are less than 0.4,and it occurs earlier(at lower vapor quality)when the pressure is closer to 22.115 MPa or the mass flux is smaller.From the experimental data,a correlation function for the CHF is established via regression and machine learning.Correlations established via machine learning greatly improved the regression accuracy.To study the CHF phenomenon mechanically,a theoretical model is established based on the near-surface bubble crowding model describing the DNB-type CHF.In the development of the CHF model,the friction resistance coefficient is determined according to our test results.By comparison with different experimental results,the near-surface bubble crowding model is well suited to describe DNB-type CHF.The calculation results of the model can provide reference for the optimal design of the USCFB boiler. | WANG Wenyu MA Zhan QING Hao NIE Chao YANG Haoyu BI Lingfeng YANG Dong PAN Wenxiao | 2023 | Journal of Thermal Science2023，32，1： | 0 |
| 8 | Correction to“Ionic Liquid for Perovskite Solar Cells:An Emerging Solvent Engineering Technology”显示文摘In the TOC and Conspectus graphics,“Perovskite Solar Cell”should be replaced by“Perovskite Solar Cells”and“Lonic liquid”should be replaced by“Ionic Liquid”.The corrected image is provided here. | Lingfeng Chao Tingting Niu Yingdong Xia Yonghua Chen Wei Huang | 2022 | Accounts of Materials Research2022，3，1： | 0 |
| 9 | Impairment of TRPC1-BK complex in diabetic rat coronary artery显示文摘To the Editor:Diabetes mellitus(DM)is a chronic disease that endangers human health and can lead to different complications.[1]Coronary artery,disease is one of the most serious complications in DM patients. | Manqing Sun Lingling Qian Lingfeng Miao Ying Wu Xiaoyu Liu Shipeng Dang Xu Tang Zhenye Zhang Chao Wang Qiang Chai Fu Yi Jianfeng Hao Ruxing Wang | 2022 | Chinese Medical Journal2022，，15： | 0 |
| 10 | Chiral cation promoted interfacial charge extraction for efficient tin-based perovskite solar cells显示文摘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. | 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 | 2022 | Journal of Energy Chemistry2022，31，5： | 0 |
| 11 | Rapid and durable oxygen reduction reaction enabled by a perovskite oxide with self-cleaning surface显示文摘The growth of electrochemically inert segregation layers on the surface of solid oxide fuel cell cathodes has become a bottleneck restricting the development of perovskite-structured oxygen reduction catalysts.Here,we report a new discovery in which enriched Ba and Fe ions on the near-surface of Nd_(1/2)Ba_(1/2)Co_(1/3)Fe_(1/3)Mn_(1/3)O_(3-δ)spontaneously agglomerate into dispersed Ba_(5)Fe_(2)O_(8) nanoparticles and maintain a highly active and durable perovskite structure on the surface.This unique surface selfcleaning phenomenon is related to the low average potential energy of Ba_(5)Fe_(2)O_(8),which is grown on the near-surface layer.The electrochemically inert Ba_(5)Fe_(2)O_(8) segregation layer on the near-surface of the perovskite catalyst achieves self-cleaning by regulating the formation energy of enriched metal oxides.This self-cleaned perovskite surface exhibits an ultrafast oxygen exchange rate,high catalytic activity for the oxygen reduction reaction,and good adaptability to the actual working conditions of solid oxide fuel cell stacks.This study paves a new way for overcoming the stubborn problem of perovskite catalyst surface deactivation and enriches the scientific knowledge of surface catalysis. | Shengli Pang Yifan Song Meng Cui Xin Tang Chao Long Lingfeng Ke Gongmei Yang Ting Fang Yong Guan Chonglin Chen | 2023 | Journal of Energy Chemistry2023，，8： | 0 |
| 12 | Solution processed nano-ZnMgO interfacial layer for highly efficient inverted perovskite solar cells显示文摘Interfacial layer has a significant impact on the achievement of highly efficient organic–inorganic hybrid perovskite solar cells(PSCs). Here, we introduced a nano-ZnMgO(magnesium doped ZnO, abbreviated as ZnMgO) as interfacial layer between [6, 6]-Phenyl C_(61) butyric acid methyl ester(PC_(61) BM) layer and Al electrode to replace LiF or ZnO interlayer and enhance device performance. The device efficiency has been improved from 11.43% to 15.61% and the hysteresis was decreased dramatically. Such huge enhancement of power convert efficiency(PCE) can be attributed to the low dark current density, enhancement of electron-selective contact, and low energy barrier at the PC_(61) BM/Al interface. We suggest that this simple nano-scale interlayer can provide an efficient charge transport and extraction for highly efficient PSCs. | Ze Wang Yingdong Xia Lingfeng Chao Yufeng Pan Meijin Li Renzhi Li Bin Du Yonghua Chen Wei Huang | 2019 | Journal of Energy Chemistry2019，28，1： | 0 |
| 13 | Stable Metal–Halide Perovskite Colloids in Protic Ionic Liquid显示文摘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. | Hao Gu Tingting Niu Shouwei Zuo Yongqing Cai Lingfeng Chao Peter Müller-Buschbaum Yingdong Xia Jing Zhang Guichuan Xing Yonghua Chen | 2022 | CCS Chemistry2022，4，10： | 0 |
| 14 | Metal oxide semiconductor gas sensing materials for early lung cancer diagnosis显示文摘The urgency of early lung cancer(LC)diagnosis and treatment has been more and more significant.Exhaled breath analysis using gas sensors is a promising way to find out if someone has LC due to its low-cost,non-invasive,and real-time monitoring compared with traditional invasive diagnostic techniques.Among sensor-based gas detection techniques,metal oxide semiconductor’s gas sensors are one of the most important types.This review presents the-state-of-art in metal oxide gas sensors for the diagnosis of early LC.First,the exhaled breath biomarkers are described with emphasis on the concentration of abnormal volatile organic compounds(VOCs)caused by the metabolic process of LC cells.Then,the research status of metal oxide gas sensors in LC diagnosis is summarized.The sensing performance and enhancement strategy of biomarkers provided by metal oxide semiconductor materials are reviewed.Another effective way to improve VOC detection performance is to build a gas sensor array.At the same time,various gas sensors combined with self-powered techniques are mentioned to display a broad development prospect in breath diagnosis.Finally,metal oxide gas sensor-based LC diagnosis is prospected. | Xiaoxi HE Hongfeng CHAI Yifan LUO Lingfeng MIN Marc DEBLIQUY Chao ZHANG | 2023 | Journal of Advanced Ceramics2023，12，2： | 0 |
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