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| 1 | Organic photovoltaic cell with 17% efficiency and superior processability显示文摘The development of organic photoactive materials,especially the newly emerging non-fullerene electron acceptors(NFAs),has enabled rapid progress in organic photovoltaic(OPV)cells in recent years.Although the power conversion efficiencies(PCEs)of the top-performance OPV cells have surpassed 16%,the devices are usually fabricated via a spin-coating method and are not suitable for large-area production.Here,we demonstrate that the fine-modification of the flexible side chains of NFAs can yield 17%PCE for OPV cells.More crucially,as the optimal NFA has a suitable solubility and thus a desirable morphology,the high efficiencies of spin-coated devices can be maintained when using scalable blade-coating processing technology.Our results suggest that optimization of the chemical structures of the OPV materials can improve device performance.This has great significance in larger-area production technologies that provide important scientific insights for the commercialization of OPV cells. | Yong Cui Huifeng Yao Ling Hong Tao Zhang Yabing Tang Baojun Lin Kaihu Xian Bowei Gao Cunbin An Pengqing Bi Wei Ma Jianhui Hou | 2020 | National Science Review2020，7，7： | 7 |
| 2 | Molecular design revitalizes the low-cost PTV-polymer for highly efficient organic solar cells显示文摘Developing photovoltaic materials with simple chemical structures and easy synthesis still remains a major challenge in the industrialization process of organic solar cells(OSCs).Herein,an ester substituted poly(thiophene vinylene)derivative,PTVT-T,was designed and synthesized in very few steps by adopting commercially available raw materials.The ester groups on the thiophene units enable PTVT-T to have a planar and stable conformation.Moreover,PTVT-T presents a wide absorption band and strong aggregation effect in solution,which are the key characteristics needed to realize high performance in non-fullerene-acceptor(NFA)-based OSCs.We then prepared OSCs by blending PTVT-T with three representative fullerene-and NF-based acceptors,PC71 BM,IT-4 F and BTP-e C9.It was found that PTVT-T can work well with all the acceptors,showing great potential to match new emerging NFAs.Particularly,a remarkable power conversion efficiency of 16.20%is achieved in a PTVT-T:BTP-e C9-based device,which is the highest value among the counterparts based on PTV derivatives.This work demonstrates that PTVT-T shows great potential for the future commercialization of OSCs. | Junzhen Ren Pengqing Bi Jianqi Zhang Jiao Liu Jingwen Wang Ye Xu Zhixiang Wei Shaoqing Zhang Jianhui Hou | 2021 | National Science Review2021，8，8： | 3 |
| 3 | Progress in Organic Solar Cells: Materials, Physics and Device Engineering显示文摘Organic solar cells(OSCs)have been developed for few decades since the preparation of the first photovoltaic device,and the record power conversion efficiency(PCE)certified by national renewable energy laboratory(NREL)has exceeded 17%.Looking back the whole history of OSCs,its rapid development is inseparable from multi-disciplinary efforts,including the new materials synthesizing,the device physics,and the device engineering,especially the breakthroughs in these disciplines.In this review,we are aiming at reviewing the history of the development of OSCs and summarizing the representative breakthroughs. | Pengqing Bi Shaoqing Zhang Jingwen Wang Junzhen Ren Jianhui Hou | 2021 | Chinese Journal of Chemistry2021，39，9： | 2 |
| 4 | Monodisperse magnetic single-crystal ferrite micmspheres显示文摘 | Deng H LiX PengQ WangX ChenJ LiY | 2005 | Angewandte Chemie International Edition2005，44，： | 1 |
| 5 | Dendritic cell synthesis of C3 is re- quired for full T cell activation and development of a Thl phenotype 显示文摘 | PengQ Li K Patel H | 2006 | J Immunol2006，176，6： | 1 |
| 6 | Environmentally assisted crack growth in one-dimensionally cold worked alloy 690TT in primary water显示文摘 | PENGQ J HOU J YONEZAWAT | 2012 | Corrosion Science2012，，57： | 1 |
| 7 | NanoscalecoatingofLiMO2(M=Ni,Co,Mn)NanobeltswithLi+GconducGtiveLi2TiO3:towardbetterratecapabilitiesforLiGionbatteries显示文摘 | LuJ PengQ Wang W Y etal | 2013 | JournaloftheAmericanChemicalSocieGty2013，135，： | 1 |
| 8 | Aging behavior and mechanical properties of Mg-Gd-Ho alloys显示文摘 | PENGQ M DONG H W WANG LD WU YM WANG LM | | 0，，： | 1 |
| 9 | Macrophagemetalloelastase(MMP12)deficiencymitigatesretinalinflammationandpathologicalangiogenesisinischemicretinopathy显示文摘 | LiJ WangJJ PengQ ChenC HumphreyMB HeineckeJ etal | 2012 | PLoSOne2012，7，52： | 1 |
| 10 | Suppressing trap states and energy loss by optimizing vertical phase distribution through ternary strategy in organic solar cells显示文摘Suppressing the trap-state density and the energy loss via ternary strategy was demonstrated.Favorable vertical phase distribution with donors(acceptors)accumulated(depleted)at the interface of active layer and charge extraction layer can be obtained by introducing appropriate amount of polymer acceptor N2200 into the systems of PBDB-T:IT-M and PBDB-TF:Y6.In addition,N2200 is gradiently distributed in the vertical direction in the ternary blend film.Various measurements were carried out to study the effects of N2200 on the binary systems.It was found that the optimized morphology especially in vertical direction can significantly decrease the trap state density of the binary blend films,which is beneficial for the charge transport and collection.All these features enable an obvious decrease in charge recombination in both PBDB-T:IT-M and PBDB-TF:Y6 based organic solar cells(OSCs),and power conversion efficiencies(PCEs)of 12.5%and 16.42%were obtained for the ternary OSCs,respectively.This work indicates that it is an effective method to suppress the trap state density and thus improve the device performance through ternary strategy. | Pengqing Bi Shaoqing Zhang Tong Xiao Minghuan Cui Zhihao Chen Junzhen Ren Chaochao Qin Guanghao Lu Xiaotao Hao Jianhui Hou | 2021 | Science China Chemistry2021，64，4： | 1 |
| 11 | Rapid and effective ad- sorption of lead ions on fine poly (phenylenediamine) mi- croparticles 显示文摘 | Huang M R PengQ Y Li X G | 2006 | Chemistry-A European Journal2006，12，： | 1 |
| 12 | Novel copoly( ether ether ketone)s with pendant phenyl groups: synthesis and characterization显示文摘 | Wu Ting Liu Pengqing Shi Meiwu | 2011 | Polym Int2011，60，9： | 1 |
| 13 | 显示文摘 | PENGQing(彭卿) LIYa-Dong(李亚栋) | | ZhongguoKexueHuaxue0，，： | 1 |
| 14 | Novel polyary- lares containing aryl ether units : synthesis, characterization and properties 显示文摘 | Liu Pengqing Wu Ting Ye Guangdou | 2013 | Polym Int2013，62，5： | 1 |
| 15 | Evaluation of non- isothermal crystallization kinetic models for linear poly (phenyl- ene sulfide) 显示文摘 | Liu Pengqing Hu An Wang Sheng | 2011 | J Appl Polym Sci2011，121，1： | 1 |
| 16 | A hybrid lithium sulfonated polyoxadiazole derived single-ion conducting gel polymer electrolyte enabled effective suppression of dendritic lithium growth显示文摘Lithium metal is deemed as an ideal anode material in lithium-ion batteries because of its ultrahigh theoretical specific capacity and the lowest redox potential.However,the rapid capacity attenuation and inferior security resulting from the dendritic lithium growth severely limit its commercialization.Herein a novel hybrid gel polymer electrolyte (GPE) based on electrospun lithium sulfonated polyoxadiazole (LiSPOD) nanofibrous membrane swelled by lithium bis(trifluoromethanesulfonyl)imide (Li TFSI) ether liquid electrolyte is proposed to address the issue of lithium dendrites.The Li-SPOD membrane synthesized by a simple one-pot method exhibits excellent mechanical strength and thermal resistance due to its high molecular weight and rigid backbone.The electron-withdrawing oxadiazole ring and oxadiazole ring-Li;complex,and N,O heteroatoms with lone pairs of electrons in Li-SPOD macromolecular chains facilitate the dissociation of-SO_(3)Li group and Li^(+)transference.The hybrid Li-SPOD GPE exhibits both a high lithium-ion transference number (0.64) and high ionic conductivity (2.03 m S/cm) as well as superior interfacial compacity with lithium anodes.The Li Fe PO_(4)-Li cell using this novel GPE can operate steadily at 2C for 300 cycles,remaining a high discharge capacity of 125 m Ah/g and dendrite-free anode.Remarkable performance improvements for the Li-Li and Cu-Li cells are also presented. | Dazhe Li Longbo Luo Jiadeng Zhu Haimei Qin Pengqing Liu Zhaomei Sun Yi Lei Mengjin Jiang | 2022 | Chinese Chemical Letters2022，33，2： | 1 |
| 17 | Stable RNA interference of hexokinase Ⅱ gene inhibits human colon cancer LoVo cell growth in vitro and in vivo显示文摘 | PengQ ZhouQ ZhouJ | 2008 | Cancer Biol Ther2008，7，7： | 1 |
| 18 | Fluorination strategy enables greatly improved performance for organic solar cells based on polythiophene derivatives显示文摘The power conversion efficiencies(PCEs)of organic solar cells(OSCs)have reached 18%recently,which have already met the demand of practical application.However,these outstanding results were generally achieved with donor-acceptor(D-A)type copolymer donors,which can hardly fulfill the low-cost largescale production due to their complicated synthesis processes.Therefore,developing polymer donors with simple chemical structures is urgent for realizing low-cost OSCs.Polythiophene(PT)derivatives are currently regarded as promising candidates for such kind of donor materials,which has been illustrated in many works.In this work,two new alkylthio substituted PT derivatives,P301 and P302,were synthesized and tested as donors in the OSCs using Y5 as the accepto r.In comparison,the introduction of fluorine atoms on the backbone of P302 can not only downshift the energy levels,but also greatly improve the phase separation morphologies of the active layers,which is ascribed to the enhanced aggregation effect and the reduced miscibility with the non-fullerene acceptor.As a result,the P302:Y5-based OSC exhibits a significantly improved PCE of 9.65%than that of P301:Y5-based one,indicating the important role of fluorination in the construction of efficient PT derivative donors. | Chenyi Yang Shaoqing Zhang Junzhen Ren Pengqing Bi Xiaotao Yuan Jianhui Hou | 2021 | Chinese Chemical Letters2021，32，7： | 0 |
| 19 | Effects of various donor:acceptor blend ratios on photophysical properties in non-fullerene organic bulk heterojunctions显示文摘The composition ratio of donor and acceptor materials in organic bulk heterojunction (BHJ) is one of the key parameters to govern the performance in organic solar cells (OSCs). Therefore, high-performance non-fullerene organic bulk heterojunction consisting of poly[(2,6-(4,8-bis(5-(2-ethylhexyl)thiophen-2-yl)benzo[1,2-b:4,5-b' ]dithiophene))-co-(1,3-di(5-thiophene-2-yl)–5,7-bis(2-ethylhexyl) benzo[1,2-c:4,5-c']dithiophene-4,8-dione)] (PBDB-T) and 3,9-bis(2-methylene-(3-(1,1-dicyanomethylene)-indanone))–5,5,11,11-tetrakis(4-hexylphenyl)-dithieno[2,3-d:2' ,3'-d' ]-s-indaceno[1,2-b:5,6-b' ]-dithio-phene (ITIC) are used to investigate the correlation among various donor: acceptor (D:A) ratios, photophysical properties and photovoltaic performance. Interestingly, the function of short-circuit current (Jsc) and D:A ratios demonstrates an axisymmetric trend. When the blending ratio of D:A deviates from the optimal ratio, the symmetrically decreased Jsc is derived from a reduction in the D:A interface or amorphous region. Research on the steady-state photoluminescence (PL), the time-resolved fluorescence spectroscopy measurements, atomic force microscopic (AFM) and grazing-incidence small angle X-rays scattering (GIWAXS) indicates no significant variation in energy loss in the process of changing D:A ratios in BHJs. With high donor or acceptor content, the domain size improves significantly, but the distance of π-π stacking corresponding to molecular packing has not changed significantly, and the bi-continuous percolation pathways were not obviously influenced. | Zhenchuan Wen Xuejian Ma Xiaoyu Yang Pengqing Bi Mengsi Niu Kangning Zhang Lin Feng Xiaotao Hao | 2019 | Chinese Chemical Letters2019，30，5： | 0 |
| 20 | Ergonomic Reliability Assessment of VDT Systemfor Operation Design Based on Improved BPNN and HCR under Special Circumstances显示文摘Ergonomic reliability plays a significant role in the safe operation of devices.With the spread of infectious diseases around the world,in work environments with high loads and high infection rates,medical staff work in a state of high self-protection.The use of visual display terminal(VDT)for medical equipment has undergone fundamental changes,and the traditional medical equipment human-machine interface design needs to be improved.After the completion of design and development,a VDT design enters the experimental testing stage,which has significant limitations for simulating the work of medical staff in the high-load and high-infection environments.The testing cost is high,and subjects face harsh conditions;thus,an ergonomic reliability model that can predict the use of VDT in such special high-infection and high-load circumstances must be established.An ergonomic reliability model based on an improved backpropagation neural network(BPNN)and human cognition reliability(HCR)is proposed for predicting and evaluating operation flows according tomedical equipment VDTs.Firstly,a small data sample can be used to train BPNN to generate a network that can ensure suitable accuracy.To prevent the model from falling into local optimal solutions,the bat algorithm is introduced to improve the BPNN.Compared to a traditional BPNN,the superiority of the improved BPNN is clearly demonstrated.Secondly,the HCR method is used to analyze and highlight changes in the human factor reliability of VDTs for medical equipment in different time processes and operating processes according to BPNN prediction results,to provide a reference for selecting the optimalmethod.Finally,the validity and availability of the proposedmethod are verified through an eye tracker experiment and statistical analysis results. | Xin Liu Zheng Liu Zhilin Huang Mingyu Ling Kangchao Lin Pengqing Chen Xiaomin Huang Yujia Zhai | 2023 | Computer Modeling in Engineering & Sciences2023，，7： | 0 |
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