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| 1 | Achieving over 16% efficiency for single-junction organic solar cells显示文摘To achieve high photovoltaic performance of bulk hetero-junction organic solar cells(OSCs), a range of critical factors including absorption profiles, energy level alignment, charge carrier mobility and miscibility of donor and acceptor materials should be carefully considered. For electron-donating materials, the deep highest occupied molecular orbital(HOMO) energy level that is beneficial for high open-circuit voltage is much appreciated. However, a new issue in charge transfer emerges when matching such a donor with an acceptor that has a shallower HOMO energy level. More to this point, the chemical strategies used to enhance the absorption coefficient of acceptors may lead to increased molecular crystallinity, and thus result in less controllable phase-separation of photoactive layer. Therefore, to realize balanced photovoltaic parameters, the donor-acceptor combinations should simultaneously address the absorption spectra, energy levels, and film morphologies. Here, we selected two non-fullerene acceptors, namely BTPT-4F and BTPTT-4F, to match with a wide-bandgap polymer donor P2F-EHp consisting of an imidefunctionalized benzotriazole moiety, as these materials presented complementary absorption and well-matched energy levels. By delicately optimizing the blend film morphology, we demonstrated an unprecedented power conversion efficiency of over 16% for the device based on P2F-EHp:BTPTT-4F, suggesting the great promise of materials matching toward high-performance OSCs. | Baobing Fan Difei Zhang Meijing Li Wenkai Zhong Zhaomiyi Zeng Lei Ying Fei Huang Yong Cao | 2019 | Science China Chemistry2019，62，6： | 38 |
| 2 | Seasonal variability in tropical and subtropical convective and stratiform precipitation of the East Asian monsoon显示文摘Seasonal variations in tropical and subtropical convective and stratiform precipitation of the East Asian monsoon are analyzed using 10-year (1998-2007) Tropical Rainfall Measuring Mission (TRMM) precipitation radar (PR) rain products (2A25). Datasets from the Intergovernmental Panel on Climate Change Fourth Assessment Report (AR4) 24 general circulation models (GCMs) are evaluated using TRMM PR rain products in terms of their ability to simulate convective and stratiform precipitation and their deficiencies. The results show that Asian monsoon convective and stratiform precipitation increases significantly after onset of the summer monsoon, but the percentage of convective precipitation clearly decreases over tropical areas while it increases in subtropical regions. The GCMs simulate well the seasonal variation in the contribution of Asian monsoon subtropical convective precipitation to the total rainfall; however, the simulated convective precipitation amount is high while the simulated stratiform precipitation amount is low relative to TRMM measurements, especially over the Asian monsoon tropical region. There is simultaneous TRMM-observed convective and stratiform precipitation in space and time, but GCMs cannot simulate this relationship between convective and stratiform precipitation, resulting in the deficiency of stratiform precipitation simulations. | HU Liang LI YaoDong SONG Yang DENG DiFei | 2011 | Science China Earth Sciences2011，54，10： | 11 |
| 3 | Agent-based simulation of alternative classroom evacuation scenarios显示文摘 | Runjiao Liu Difei Jiang Lei Shi | 2016 | Frontiers of Architectural Research2016，5，1： | 4 |
| 4 | “大健康”时代背景下的中、美、德医学教育体系对比分析及启示显示文摘“大健康”是根据时代发展、社会需求与疾病谱的改变提出的一种全局理念,医学人才的培养正是推进“大健康”时代的关键生产力。如何推进医学教育改革、提高医学人才质量,已经成为我国现阶段高等医学教育改革的核心。笔者通过在美国及德国医学院访问学习的经历,将中、美、德医学教育体系进行比较分析,进而总结美、德医学教育模式中值得借鉴之处,以期能够促进我国医学卓越人才的培养。 | 牛晨 任雨寒 荐志洁 白晓斌 Ziyi Chen Difei Han Xin Liu 梁宇霞 黎广宇 张明 | 2021 | 中国医学教育技术2021，35，5： | 3 |
| 5 | Recent progress in thick-film organic photovoltaic devices:Materials,devices,and processing显示文摘A successful transfer of organic photovoltaic technologies from lab to fab has to overcome a range of critical challenges such as developing high-mobility light-harvesting materials,minimizing the upscaling losses,designing advanced solar modules,controlling film quality,decreasing overall cost,and extending long-operation lifetime.To realize large-area devices toward practical applications,much effort has been devoted to understanding the fundamental mechanism of how molecular structures,device architectures,interfacial engineering,and light management and carrier dynamics affect photovoltaic performance.Such studies addressed various fundamental issues of charge carrier behavior in organic heterojunctions primarily in terms of exciton generation dependence upon light incidence,charge transportation dependence on built-in electric field,and charge extraction versus recombination.In consideration of high-throughput roll-to-roll process for large-scale fabrication of organic photovoltaic devices,it is highly appreciable to realize high power conversion efficiencies that are highly tolerable to the film thickness.Herein we summarize the recent progress in developing thick-film organic photovoltaic devices from the perspective of efficiency-loss mechanisms,material design,and device optimization strategies,proposing guidelines for designing high-efficiency thickness-insensitive devices toward mass production. | Difei Zhang Baobing Fan Lei Ying Ning Li Christoph J Brabec Fei Huang Yong Cao | 2021 | SusMat2021，1，1： | 2 |
| 6 | 查看详情显示文摘 | Hu Gengshen Feng Zhaochi Han Difei | | 0，，： | 1 |
| 7 | Buflomedil curative effect observation of treatment in patients with type 2 diabetic foot 显示文摘 | Yao Difei Zhao Mei | 2007 | Journal of modern medicine and health care2007，，2： | 1 |
| 8 | Spatio-Temporal Cellular Network Traffic Prediction Using Multi-Task Deep Learning for AI-Enabled 6G显示文摘Spatio-temporal cellular network traffic prediction at wide-area level plays an important role in resource reconfiguration,traffic scheduling and intrusion detection,thus potentially supporting connected intelligence of the sixth generation of mobile communications technology(6G).However,the existing studies just focus on the spatio-temporal modeling of traffic data of single network service,such as short message,call,or Internet.It is not conducive to accurate prediction of traffic data,characterised by diverse network service,spatio-temporality and supersize volume.To address this issue,a novel multi-task deep learning framework is developed for citywide cellular network traffic prediction.Functionally,this framework mainly consists of a dual modular feature sharing layer and a multi-task learning layer(DMFS-MT).The former aims at mining long-term spatio-temporal dependencies and local spatio-temporal fluctuation trends in data,respectively,via a new combination of convolutional gated recurrent unit(ConvGRU)and 3-dimensional convolutional neural network(3D-CNN).For the latter,each task is performed for predicting service-specific traffic data based on a fully connected network.On the real-world Telecom Italia dataset,simulation results demonstrate the effectiveness of our proposal through prediction performance measure,spatial pattern comparison and statistical distribution verification. | Xiaochuan Sun Biao Wei Jiahui Gao Difei Cao Zhigang Li Yingqi Li | 2022 | Journal of Beijing Institute of Technology2022，31，5： | 1 |
| 9 | Shape-controlled synthesis of a novel precursor for fibrous Ni-Co alloy powders显示文摘 | Zhan Jing Zhou Difei Zhang Chuanfu | 2011 | Trans Nonferrous Met Soc China2011，，3： | 1 |
| 10 | Enhan - ced - Light - Harvesting Amphiphilic Ruthenium Dye for Efficient Solid - State Dye - Sensitized Solar 显示文摘 | Mingkui Wang Soo - Jin Moon Difei Zhou | 2010 | Advanced Functional Materials2010，20，： | 1 |
| 11 | 深水支持平台火灾定量风险评估显示文摘The living area of an offshore platform is the main living place for operators in offshore oil and gas fields.Fire risk assessment plays an important role in the safety of personnel in offshore platforms.In this paper,a fire risk assessment mathematical model for offshore platfoms is proposed based on a comprehensive safety assessment method.The concept of danger time is presented according to the evaluation criteria of safe evacuation.The fire risk of offshore platforms is assessed by combining probability statistics with numerical simulation.The fire risk is quantitatively assessed by using an N500 deep water semi-submersible support platform as an example.According to the FN curve,fire frequency,fire escalation probability,and casualty probability,the rationality of marine general layout is analyzed,and the general layout design could be optimized to reduce the fire risk. | Haipeng Zhang Zichen Zhou Miao Chen Difei Yi | 2021 | Journal of Marine Science and Application2021，20，2： | 1 |
| 12 | In vitro assessmentofthe broad-spectrum ultraviolet protection of sunscreen products显示文摘 | DIFEY B L TANNER P R MARTS P J | | 0，，06： | 1 |
| 13 | Experimental investigation of the propeller wake at different loading conditions by particle image ve- locimetry 显示文摘 | DIFEI ICE F | 2004 | Journal of Ship Research2004，48，2： | 1 |
| 14 | A Bayesian Game Approach for Demand Response Management Considering Incomplete Information显示文摘Residential flexible resource is attracting much attention in demand response(DR)for peak load shifting.This paper proposes a scenario for multi-stage DR project to schedule energy consumption of residential communities considering the incomplete information.Communities in the scenario can decide whether to participate in DR in each stage,but the decision is the private information that is unknown to other communities.To optimize the energy consumption,a Bayesian game approach is formulated,in which the probability characteristic of the decision-making of residential communities is described with Markov chain considering human behavior of bounded rationality.Simulation results show that the proposed approach can benefit all residential communities and power grid,but the optimization effect is slightly inferior to that in complete information game approach. | Xiaofeng Liu Difei Tang Zhicheng Dai | 2022 | Journal of Modern Power Systems and Clean Energy2022，10，2： | 1 |
| 15 | A report of sweet osmanthus cultivars in Wuhan city 显示文摘 | Wang Caiyun Wang Qichao | 1995 | Chinese Sweet Osmanthus1995，，： | 1 |
| 16 | Improving photovoltaic parameters of all-polymer solar cells through integrating two polymeric donors显示文摘The incorporation of an additional component into the bulk-heterojunction light-harvesting layer of polymer solar cells has been considered as an effective strategy to enhance photovoltaic performance.Here we demonstrated that the photovoltaic parameters of all-polymer solar cells could be enhanced upon replacing a certain ratio of electron-donating polymer PTz BI-o F with a widely used wide-bandgap polymer donor PM6.The photoluminescent characterizations confirmed the F?rster resonance energy transfer from incorporated PM6 to PTz BI-o F.Moreover,the combination of Fourier-transform photocurrent spectroscopy and electroluminescence external quantum efficiencies measurements demonstrated reduced non-radiative recombination energy loss upon the incorporation of PM6,resulting in a slightly enhanced open-circuit voltage of 0.88 V of the ternary cell regarding the binary PTz BI-o F:PFA1 device.The optimized ternary blend devices comprising of PTz BI-o F:PM6:PFA1 presented an impressively high power conversion efficiency of 16.3%,and the efficiency remains 15%on a device with an enlarged effective area of 1 cm^(2),demonstrating the great potential of these all-PSCs for potential applications. | Kang An Feng Peng Wenkai Zhong Wanyuan Deng Difei Zhang Lei Ying Hongbin Wu Fei Huang Yong Cao | 2021 | Science China Chemistry2021，64，11： | 1 |
| 17 | Frege and Neo-Fregeanism:Interview with Bob Hale显示文摘Bob Hale is a philosopher,who has been devoting himself to modality and metaphysics.His research as British Academy Reader was mainly in the philosophy of mathematics.With and during long collaboration with Crispin Wright,he developed and defended a position of neo-Fregeanism,according to which mathematical knowledge can be grounded on logic and definitions of fundamental notions.Neo-Fregeanism has been arousing philosophers'serious thought and discussion since 1980s and still inspires philosophers nowadays in the field of philosophy of mathematics,philosophy of language and philosophy of mind. | Difei Xu | 2018 | 逻辑学研究2018，11，1： | 0 |
| 18 | EXTRACTION KINETICS,SYNERGISTIC EFFECTS AND INTERFACIAL CHEMISTRY FOR D_2 EHPA MPA-Fe^(3+) MIXED EXTRACTION SYSTEM显示文摘The thermodynamics of micella formation,interfacial characteristics,synergistic effectsand interfacial kinetics for synergistic extraction system D2 EHPA-MPA-Fe3+ have beenstudied.It was found that D2EHPA in the mixed system strongly exhibits the effect onthe micella formation thermodynamics and interracial characteristics of MPA.Some ther-modynamic parameters for constants of micelles formation(Km).free energies of micellesformation(ΔGm)and critical micella concentrations(CMC)were obtained.The inter-facial adsorption behaviour of D2EHPA is opposite to that of MPA.The emulsificationfor single MPA and the mixed system was discussed.The synergistic effects were foundin this mixed extraction system.It is proved that the process of the Fe3+ extractionfor non-mixed extraction system is controlled by chemical reaction and the controllingreaction occurs at the interface. | YU Jingfen LIU Difei Tsinghua University,Beijing,China professor,Dept.of Chemical Engineering,Tsinghua University,Beijing 100084,China | 1993 | Acta Metallurgica Sinica(English Letters)1993，6，12： | 0 |
| 19 | A Good Seedless Ponkan Cultivar—Qianyang Seedless Ponkan显示文摘Qianyang Seedless Ponkan selected from common ponkan is a sport deviation cultivar without any seeds in its fruit. Matures in mid November, it has bigger avg.124.5g fruit, and the yield is 30 t ha-1 after 5 years' growing. There are no obvious in-year or off-year phenomena. Its fruits can store well without any treatments at room temperature for three or four months. | Bu Fanwen, Peng Difei, Zhong Caihong, and Cai Jinshu Hunan Horticultural Research Institute, Changsha 410125, China | 2002 | Hunan Agricultural Science & Technology Newsletter2002，3，2： | 0 |
| 20 | Research on perception of juncturebetween syllables in Chinese显示文摘For Chinese synthesis systems that use syllables as basic units, the perception of between-syllable juncture is a matter of interest. In this paper, a two-step perception test to investigate the perception property of formani transition is presented. The first step is a set of exploring tests, from which it is found that subjects can not distinguish whether the formants of two successive syllables are transited smoothly. The second step perception test is disigned to investigate the perception of formant transitions on a more thorough environment. The stimuli of the test are disyllabic words, which cover various phonemic structures and tonal combinations. Both the average person and specialists on phonetics and speech technology are invested to be subjects. Results of the second step test are consistent with those of the flrst step. The results also show that listeners are in general not sensitive to formant transition.Yet, both segment structure and tonal variation will affect the perception of formant transition.Although listeners with phonology knowledge tend to pay more attention to formant transition than others, they still have difficulty to distinguish synthetic disyllabic words with formant transition between syllables from those | CHU Min TANG Difei SI Hongyan TIAN Xuqing LU Shinan (Institute of Acoustics, Academia Sinica Beijing 100080) KONG Jiangping (The Institute of Nationality Studies, CASS Beijing 100081) | 1998 | Chinese Journal of Acoustics1998，17，2： | 0 |
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