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Ternary organic solar cells offer 14% power conversion efficiency

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Science Bulletin 2017年第23期62卷 1562-1564页

作者： zuo xiao Xue Jia Liming Ding Center for Excellence in Nanoscience (CAS) Key Laboratory of Nanosystem and Hierarchical Fabrication (CAS) National Center for Nanoscience and TechnologyBeijing 100190 China University of Chinese Academy of Sciences Beijing 100049 China

Organic solar cells （OSCs） have advantages like light-weight, flexibility, colorfulness and solution processability [1 ]. The active layer of OSCs generally contains two organic semiconductors： an electron donor and an electron acceptor. The donor and acceptor make nanoscale phase separation to allow efficient exciton dissociation and also form a three-dimensional （3D） passage to rapidly transfer free charge carriers to respective electrodes.

关键词： Ternary organic solar cells power conversion efficiency

Hour-to-hour variability of the ionosphere: An application of the classical multidimensional scaling method

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Science China Earth Sciences 2015年第7期58卷 1243-1250页

作者： SHI Hao ZHANG DongHe HAO YongQiang xiao zuo Department of Geophysics Peking University

The classical multidimensional scaling(MDS) method is introduced and applied in the study of the hour-to-hour ionospheric variability based on the ionospheric fo F2 observed at three ionosonde stations in East-Asia in 2002 and 2007. Results from the matrix eigen decompositions indicate that the annual part of the ionospheric variation is large in middle latitude and solar maximum period(2002) while low in the low latitude and solar minimum period(2007). The connectivity maps of the hour-to-hour ionospheric variability based on MDS method show some common diurnal features. The ionospheric connectivity between adjacent hours near noon hours and near midnight hours is high. The ionospheric connectivity between adjacent hours near sunrise hours and near sunset hours is poor, especially for the sunrise hours. Also there are latitudinal and solar activity dependences in this kind of connectivity. These results revealed from the ionospheric connectivity maps are useful physically and in practice for the ionospheric forecasting on the hour-to-hour scale.

关键词： ionospheric variability classical multidimensional scaling connectivity map

A theoretical analysis of global characteristics of spread-F

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Chinese Science Bulletin 2001年第19期46卷 1593-1595页

作者： zuo xiao Tianhua Zhang Peking Univ Dept Geophys Beijing 100871 Peoples R China

Spread-F is an important ionosphere pheonome-non and it has much effect on radio wave propogation. Taking magnetic inclination and declination into consideration, a theoretical model is deduced for the linear growth-rate of spread-F. It is a generalization of the earlier equatorial model and a relatively complete description o f the spread-F pheonomenon. This theory shows that the magnetic configuration, i.e. the magnetic strength, inclination and declination, affects the occurrence rate greatly, which forms some regional distribution characteristics of the spread-F.

关键词： spread-F irregularities global characteristics.

Study of the ionospheric TEC using GPS during the large solar flare burst on Nov. 6,1997

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Chinese Science Bulletin 2000年第19期45卷 1749-1752页

作者： Donghe Zhang zuo xiao Peking Univ Dept Geophys Beijing 100871 Peoples R China

Using the data from 15 global positioning system (GPS) stations scattered between 28° N-45° N and 90° W- 77° E we obtained the total electron content (TEC) variations with time during a large solar flare. The results indicated that the flare makes the TEC of ionosphere increasing in a large spatial area. The amounts of the TEC enhancement are mainly determined by the local time of subionospheric point, and the largest TEC enhancement is about 2.5 TECU. It is also concluded that the TEC enhancement is not symmetrical about the local noon time, the TEC enhancement values during morning hours are larger than those of the afternoon hours.

关键词： total electron content (TEC) flare subionospheric point.

Thermostable single-junction organic solar cells with a power conversion efficiency of 14.62%

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Science Bulletin 2018年第6期63卷 340-342页

作者： Hui Li zuo xiao Liming Ding Jizheng Wang Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Organic Solids Institute of Chemistry Chinese Academy of Sciences Center for Excellence in Nanoscience (CAS) Key Laboratory of Nanosystem and Hierarchical Fabrication (CAS) National Center for Nanoscience and Technology

Organic solar cells(OSCs)have drawn substantial attention in recent two decades due to their features of solution processability,low cost,and light weight[1].The active layer of OSCs is usually composed of an electron donor(D)and an electron acceptor(A).The D/A system can form interpenetrated nanoscale network,which allows efficient exciton dissociation and hence charge carrier ***,the efficiency of such binary OSCs is gen-

关键词：太阳能电池变换效率器官连接材料发展低费用振荡轻重量

STUDY ON THE INTERACTION BETWEEN POLYVINYLPYRROLIDONE AND PLATINUM METALS DURING THE FORMATION OF THE COLLOIDAL METAL NANOPARTICLES

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Chinese Journal of Polymer Science 2008年第1期26卷 23-29页

作者： Tu, Wei-xia zuo, xiao-bin Liu, Han-fan Beijing Inst Chem Technol Minist Educ Key Lab Nanomat Div Mol & Mat Simulat Beijing 100029 Peoples R China Chinese Acad Sci Inst Chem Beijing 100080 Peoples R China

Several PVP-stabilized colloidal platinum metals nanoparticles have been synthesized and characterized by FTIR and *** with the pure PVP,carbonyl groups of PVP in the mixture of PVP and the metal precursors or in the PVP-stabilized metal nanoparticles have obvious peak shifts in FTIR *** peak shifts reveal the interaction between PVP and the metal *** interaction between PVP and metal precursors has effect on the formation of the colloidal metal *** of the intera...

关键词： Colloidal metal nanoparticles Metal precursor PVP Interaction

5H-dithieno[3,2-b:20,30-d]pyran-5-one unit yields efficient wide-bandgap polymer donors

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Science Bulletin 2019年第22期64卷 1655-1657页

作者： Jinfeng Liu Ling Liu Chuantian zuo zuo xiao Yingping Zou Zhiwen Jin Liming Ding College of Chemistry and Chemical Engineering Central South UniversityChangsha 410083China Center for Excellence in Nanoscience(CAS) Key Laboratory of Nanosystem and Hierarchical Fabrication(CAS)National Center for Nanoscience and TechnologyBeijing 100190China CSIRO Manufacturing Bag 10Clayton SouthVictoria 3169Australia School of Physical Science and Technology Lanzhou UniversityLanzhou 730000China

Recently,great progress has been made in organic solar cells due to the emergence of high-performance nonfullerene acceptors[1-6].Over 16%and 17%power conversion efficiencies(PCEs)were achieved for nonfullerene-acceptor-based single-junction and tandem cells,respectively[7,8].Owing to complementary light absorption,wide-bandgap donor-acceptor(D-A)copolymers are ideal electron-donating partners for nonfullerene ***,efficient D-A copolymer donors are still limited.

关键词： acceptor donor complementary

A brief of recent research progress on ionospheric disturbances

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Science China(Information Sciences) 2013年第12期56卷 195-203页

作者： xiao zuo YU ShiMei SHI Hao HAO Yong QiangInstitute of Space Physics and Applied Technology Peking University

Ionospheric disturbances are the main causes of space weather events,which seriously influence accurate navigation,telecommunication,and so *** is a fundamental issue to detect and analyze the disturbance processes of the ***,the understanding of the mechanisms of most ionospheric disturbances depends on observational *** the development of space observation techniques and related equipments,various eforts have been made to analyze the long-term statistical variations as well as sudden disturbances of ionospheric observation *** briefly report some research progresses of ionospheric disturbances achieved in recent years,with regard to ground-based and satellites *** purpose is to provide a reference about the latest research progresses and improve the development of the future ionospheric disturbances observations and related researches.

关键词： ionospheric disturbance ground-based observation satellites observation Chinese Meridian Project GPS

Ionospheric Weather and Climate—— A Review on Chinese Works From 2004 to 2006

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空间科学学报 2006年第Z1期26卷 112-121页

作者： WAN Weixing xiao zuo Institute of Geology and Geophysics Chinese Academy of Sciences Beijing 100029 China School of Earth and Space Science Peking University

This paper reviews the recent studies on the ionospheric weather and climate. As a national report prepared for COSPAR, the works concerned here are limited to those made by Chinese scientists during 2004-2006. The main contents include the sudden ionospheric disturbances, the ionospheric storms, the traveling ionospheric disturbances, ionospheric variability, the annual and semiannual ionospheric variations, the solar cycle ionospheric variations, and the long term ionospheric changes.

关键词： Ionospheric weather and climate