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Achieving Efficient Thick Film All-polymer Solar Cells Using a Green Solvent Additive

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Chinese Journal of Polymer Science 2020年第4期38卷 323-331,I0005页

作者： Zhen-Ye li Wen-Kai zhong Lei Ying Ning li Feng liu Fei Huang yong Cao Institute of Polymer Optoelectronic Materials and Devices State Key Laboratory of Luminescent Materials and DevicesSouth China University of TechnologyGuangzhou 510640China South China Institute of Collaborative Innovation Dongguan 523808China Institute of Materials for Electronics and Energy Technology(i-MEET) FAU Erlangen-Nurnberg91058 ErlangenGermany Department of Physics and Astronomy Shanghai Jiao Tong UniversityShanghai200240China

Adva nces in orga nic photovoltaic tech no logies have been geared toward industrial high-throughput printing manufacturing,which requires in sensitivity of photovoltaic performance reg a rd i ng to the light-harvesting layer ***,the thickness of light-harvesti ng layer for all polymer solar cells(all-PSCs)is often limited to about 100 nm due to the dramatically decreased fill factor upon increasing film thickness,which hampers the light harvesting capability to in crease the power con versio n efficie ncy,and is un favorable for fabricating large-area *** we dem on strate that by tuning the bulk heterojuncti on morphology using a non-halogenated solvent,cyclopentyl methyl ether,in the presence of a gree n solve nt additive of dibenzyl ether,the power con versio n efficie ncy of all-PSCs with photoactive layer thick nesses of over 500 nm reached an impressively high value of 9%.The gen eric applicability of this gree n solvent additive to boost the power conversion efficiency of thick-film devices is also validated in various bulk heterojunction active layer systems,thus representing a promising approach for the fabrication of all-PSCs toward industrial production,as well as further commercialization.

关键词： Thick-film all-polymer solar cell Gree n solve nt additive Dibenzyl ether

Quantum optical interferometry via general photon-subtracted two-mode squeezed states

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Chinese Physics B 2019年第9期28卷 258-264页

作者： li-li Hou Jian-zhong Xue yong-Xing Sui Shuai Wang School of Mathematics and Physics Jiangsu University of Technology

We investigate the sensitivity of phase estimation in a Mach-Zehnder interferometer with photon-subtracted twomode squeezed vacuum *** results show that, for given initial squeezing parameter, both symmetric and asymmetric photon subtractions can further improve the quantum Cramér-Rao bound(i.e., the ultimate phase sensitivity), especially for single-mode photon *** the other hand, the quantum Cramér-Rao bound can be reached by parity detection for symmetric photon-subtracted two-mode squeezed vacuum states at particular values of the phase shift, but it is not valid for asymmetric photon-subtracted two-mode squeezed vacuum *** addition, compared with the two-mode squeezed vacuum state, the phase sensitivity via parity detection with asymmetric photon-subtracted two-mode squeezed vacuum states will be getting ***, parity detection may not always be the optimal detection scheme for nonclassical states of light when they are considered as the interferometer states.

关键词： quantum optics phase sensitivity quantum metrology

Clinical observation of biomimetic mineralized collagen artificial bone putty for bone reconstruction of calcaneus fracture

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Regenerative Biomaterials 2018年第2期5卷 61-67页

作者： yong-Xiong Pan Guang-Gang Yang zhong-Wan li zhong-Min Shi Zhan-Dong Sun Department of Foot and Ankle Orthopedics Guangzhou Orthopedic HospitalGuangzhou 510045China Department of Foot and Ankle Orthopedics Shanghai Sixth People’s HospitalShanghai 200233China

This study investigated clinical outcomes of biomimetic mineralized collagen artificial bone putty for bone reconstruction in the treatment of calcaneus *** cases of calcaneal fractures surgically treated with open reduction and internal fixation in our hospital from June 2014–2015 were chosen and randomly divided into two groups,including 30 cases treated with biomimetic mineralized collagen artificial bone putty as treatment group,and 30 cases treated with autogenous ilia as control *** average follow-up time was 17.263.0 *** results showed that the surgery duration and postoperative drainage volume of treatment group were significantly lower than control group;there were no statistically significant differences in the fracture healing time,American Orthopaedic Foot and Ankle Society scores at 3 and 12 months after surgery,Bo¨hler’s angle,Gissane’s angle and height of calcaneus between the two *** were no significant differences in wound complication and reject reaction between the two groups,while significant difference in donor site *** a conclusion,the implantation of biomimetic mineralized collagen artificial bone putty in the open reduction of calcaneal fracture resulted in reliable effect and less complications,which is suitable for clinical applications in the treatment of bone defect in calcaneal fractures.

关键词： calcaneus fracture mineralized collagen artificial bone putty bone substitute bone grafting

Measuring fiber position errors from spectral data

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Research in Astronomy and Astrophysics 2015年第4期15卷 608-616页

作者： Jian-Jun Chen zhong-Rui Bai A-li Luo yong-Heng Zhao National Astronomical Observatories Chinese Academy of Sciences Key Laboratory of Optical Astronomy National Astronomical ObservatoriesChinese Academy of Sciences University of Chinese Academy of Sciences

Precise fiber positioning is crucial to a wide field, multi-fiber spectroscopic survey such as the Guoshoujing Telescope （the Large Sky Area Multi-Object Fiber Spectroscopic Telescope, LAMOST）. are based on CCD photographic and Nowadays, most position error measurements image processing techniques. These methods only work for measuring errors orthogonal to the telescope optical axis, but there are also errors that lie parallel to the optical axis of the telescope, such as defocusing, and errors caused by the existing deviation angle between the optical axes of a fiber and the telescope. Directly measuring the two latter types of position errors is difficult for an individual fiber, especially during observations. Possible sources of fiber position errors are discussed in brief for LAMOST. By constructing a model of magnitude loss due to the fiber position error for a point source, we propose an indirect method to calculate both the total and systematic position errors for each individual fiber from spectral data. Restrictions and applications of this method are also discussed.

关键词： techniques: multi-fiber -- fiber spectroscopy -- spectrophotometry

Investigation of gravity influence on EOR and CO_(2) geological storage based on pore-scale simulation

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Petroleum Science 2024年第2期21卷 987-1001页

作者： yong-Mao Hao Gui-Cheng Wu Zong-Fa li zhong-Hui Wu yong-Quan Sun Ran liu Xing-Xing li Bo-Xin Pang Nan li Key Laboratory of Unconventional Oil&Gas Development(China University of Petroleum(East China)) Ministry of EducationQingdao266580ShandongChina School of Petroleum Engineering China University of Petroleum(East China)Qingdao266580ShandongChina School of Petroleum Engineering Yangtze UniversityWuhan430100HubeiChina Dongsheng Jinggong Petroleum Development Group Co. LtdShengli Oilfield CompanySINOPECDongying257001ShandongChina

Gravity assistance is a critical factor influencing CO_(2)-Oil mixing and miscible flow during EOR and CO_(2)geological *** on the Navier-Stokes equation,component mass conservation equation,and fluid property-composition relationship,a mathematical model for pore-scale CO_(2) injection in oilsaturated porous media was developed in this *** model can reflect the effects of gravity assistance,component diffusion,fluid density variation,and velocity change on EOR and CO_(2) *** nonhomogeneous porous media,the gravity influence and large density difference help to minimize the velocity difference between the main flow path and the surrounding area,thus improving the oil recovery and CO_(2) *** CO_(2) injection angles and oil-CO_(2) density differences can increase the oil recovery by 22.6% and 4.2%,respectively,and increase CO_(2) storage by 37.9% and 4.7%,*** diffusion facilitates the transportation of the oil components from the low-velocity region to the main flow path,thereby reducing the oil/CO_(2) concentration difference within the porous *** diffusion can increase oil recovery and CO_(2) storage by 5.7% and 6.9%,*** addition,combined with the component diffusion,a low CO_(2) injection rate creates a more uniform spatial distribution of the oil/CO_(2) component,resulting in increases of 9.5% oil recovery and 15.7% CO_(2) storage,*** study provides theoretical support for improving the geological CO_(2) storage and EOR processes.

关键词： Gravity Flow simulation CO_(2)-oil mixing Enhanced oil recovery(EOR) Geological storage

Reaction mechanism of self-propagating magnesiothermic reduction of ZrB_2 powders

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Rare Metals 2013年第4期32卷 408-413页

作者： yong-Ting Zheng Hong-Bo li zhong-Hai Xu Jing Zhao Pan Yang Science and Technology on Advanced Composites in Special Environments Laboratory Harbin Institute of Technology Materials Engineering Department North China Institute of Aerospace Engineering

Fine zirconium diboride （ZrB2） powders with high purity were successfully prepared by combustion synthesis through magnesiothermic reduction process in Mg-B2O3-ZrO2 system. The reaction mechanism was investigated by differential thermal analysis and quenching experiment. The results show that the whole magnesio-thermic reduction process includes three stages： first, molten B2O3 and Mg formed above the temperature of 650 ℃, and glassy B2O3 and solid ZrO2 particles were coated on the surface of the molten Mg; thus, the hollow balls can be formed when the molten Mg was exuded under capillary function. Second, ZrO2 particles reacted with molten Mg to form Zr and MgO with dissolution-precip-itation mechanism, which released a large amount of heat to induce the diffusion reaction between B203 and Mg to form B and MgO. Last, Zr reacted with B to form ZrB2 grains. The preparation of ZrB2 by self-propagating syn-thesis in Mg-B2O3-ZrO2 system is a solid-liquid-liquid reaction.

关键词： Reaction mechanism Magnesiothermicreduction Zirconium boride Self-propagating synthesis

Strongly convex weakly complex Berwald metrics and real Landsberg metrics

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Science China Mathematics 2018年第3期61卷 535-544页

作者： yong He Chunping zhong School of Mathematical Sciences Xiamen University School of Mathematical Sciences Xinjiang Normal University

Under the assumption that' is a strongly convex weakly Khler Finsler metric on a complex manifold M, we prove that F is a weakly complex Berwald metric if and only if F is a real Landsberg *** result together with zhong(2011) implies that among the strongly convex weakly Kahler Finsler metrics there does not exist unicorn metric in the sense of Bao(2007). We also give an explicit example of strongly convex Kahler Finsler metric which is simultaneously a complex Berwald metric, a complex Landsberg metric,a real Berwald metric, and a real Landsberg metric.

关键词： strongly convex Kahler Finsler metric complex Berwald metric real Landsberg metric real Berwald metric

Tsallis Entropy Based q-Gaussian Density Model and Its Application in Measurement Accuracy Improvement

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Journal of Electronic Science and Technology 2017年第1期15卷 77-82页

作者： Xuan Xie Xi-Feng li Qi-zhong Zhou yong-Le Xie School of Automation Engineering University of Electronic Science and Technology of ChinaChengdu 610054China

The central limit theorem guarantees the distribution of the measurand is Gaussian when the number of repeated measurement is infinity, but in many practical cases, the number of measurement times is limited to a given number. To overcome this contradiction, this paper firstly carries out the maximum likelihood estimation for parameter q in qGaussian density model developed under the maximum Tsallis entropy principle. Then the q-Gaussian probability density function is used in the particle filter to estimate and measure the nonlinear system. The estimated parameter q is related to the ratio between the measurement variance and the given variance, which indicates that the measurement accuracy cannot be improved if we only increase the repeated measurement times. Via using the proposed q-Gaussian density model,the measurement error（the average mean square error）of the estimation results can be reduced to a considerable level where the number of repeated measurement is limited. The experimental example is given to verify the proposed model and the measurement results prove the correctness and effectiveness of it.

关键词： variance entropy overcome infinity likelihood guarantees sequentially verify carries contradiction

A novel infrared spectrophotometric method for the rapid determination of petroleum hydrocarbons,and animal and vegetable oils in water

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Chinese Chemical Letters 2012年第1期23卷 109-112页

作者： Song lin Tang yong Zhang Sheng zhong Ai Min li State Key Laboratory of Pollution Control and Resource Reuse School of the EnvironmentNanjing UniversityNanjing 210046China Jiangsu Environmental Monitoring Center Nanjing 210036China

To determine the concentrations of total oils,petroleum hydrocarbons,and animal and vegetable oils in water,the conventional analytical methods involve two scans as well as a step of magnesium silicate adsorption to remove the animal and vegetable oils in water *** this study,a novel analytical method was developed to determine the above oils in wastewater samples through just one scan—the concentration of animal and vegetable oils,and that of total oils were determined by measuring the absorbance of the 〉C=O bond in the peak area between 1750 cm and 1735 cm^（-1）,and of the C-H bond at 2930 cm^（-1）,2960 cm,and 3030 cm^（-1）,*** concentration of petroleum hydrocarbons was then calculated by subtracting the concentration of animal and vegetable oils from that of total *** with the well-known analytical method GB/T 16488-1996,the novel approach displayed similar accuracy in the quantitative determination of oils in wastewater samples,but significantly reduced material cost and operation time.

关键词： Oil Rapid determination Method