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Optical haze of transparent and conductive silver nanowire films

Colin Preston1, Yunlu Xu2,3, Xiaogang Han1, Jeremy N. Munday2,3, and Liangbing Hu1 ()

1 Department of Materials Science and Engineering, University of Maryland College Park, College Park, Maryland 20742, USA
2 Department of Electrical and Computer Engineering, University of Maryland, College Park, Maryland 20742, USA
3 The Institute for Research in Electronics and Applied Physics, University of Maryland, College Park, Maryland 20742, USA

DOI 10.1007/s12274-013-0323-9

Nano Research 2013, 6(7): 461每468

Address correspondence to binghu@umd.edu

It is found that transparent conducting films composed of silver nanowires with large diameters exhibit greater optical haze than films with smaller diameters, even when both films exhibit nearly equal transparency and sheet resistance. This contradicts the contemporary figure of merit because films with the greater haze are better for solar cell applications.

    

Size and shape control of LiFePO4 nanocrystals for better lithium ion battery cathode materials

Caiyun Nan, Jun Lu, Lihong Li, Lingling Li, Qing Peng (), and Yadong Li ()


Department of Chemistry, State Key Laboratory of Low-Dimensional Quantum Physics, Tsinghua University, Beijing 100084, China

DOI 10.1007/s12274-013-0324-8

Nano Research 2013, 6(7): 469每477

Address correspondence to Qing Peng, pengqing@mail.tsinghua.edu.cn; Yadong Li, ydli@mail.tsinghua.edu.cn

Six LiFePO4 nanocrystals with different size and shape have been successfully synthesized in ethylene glycol by controlling the sequence of addition and ratio of the reagents. The most promising LiFePO4 nanocrystals have either predominantly {010} face exposure or high specific area with little iron(II) oxidation.

    

Solution-processable graphene mesh transparent electrodes for organic solar cells

Qian Zhang1, Xiangjian Wan1, Fei Xing2, Lu Huang1, Guankui Long1, Ningbo Yi1, Wang Ni1, Zhibo Liu2, Jianguo Tian2, and Yongsheng Chen1 ()


1 Key Laboratory for Functional Polymer Materials and Centre for Nanoscale Science and Technology, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
2 The Key Laboratory of Weak Light Nonlinear Photonics, Ministry of Education, Teda Applied Physics School and School of Physics, Nankai University, Tianjin 300071, China

DOI 10.1007/s12274-013-0325-7

Nano Research 2013, 6(7): 478每484

Address correspondence to yschen99@nankai.edu.cn

Graphene mesh electrodes (GMEs) have been prepared by the standard industrial photolithography and O2 plasma etching process using graphene solutions. Organic photovoltaic devices based on the GMEs with poly-(3-hexylthiophene)/phenyl-C61-butyric acid methyl ester (P3HT/PC61BM) as the active layer have been fabricated and exhibit a power conversion efficiency of 2.04%, the highest efficiency for solution-processed graphene transparent electrode- based solar cells reported to date.

    

Electrical and mechanical performance of graphene sheets exposed to oxidative environments

Mario Lanza1, Yan Wang2, Teng Gao3, Albin Bayerl4, Marc Porti4, Montserrat Nafria4, Yangbo Zhou5, Guangyin Jing6, Yanfeng Zhang3, Zhongfan Liu3, Dapeng Yu5, and Huiling

Duan1 ()


1 State Key Laboratory for Turbulence and Complex System, Department of Mechanics and Aerospace Engineering, CAPT, College of Engineering, Peking University, Beijing 100871, China
2 Beijing Aeronautical Science and Technology Research Institute, Beijing 102211, China
3 Center for Nanochemistry (CNC), Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, China
4 Electronic Engineering Department, Universitat Autonoma de Barcelona, Cerdanyola del Valles 08193, Spain
5 Department of Physics, State Key Laboratory for Mesoscopic Physics, Peking University, Beijing 100871, China
6 Physics Department, Northwest University, Xi*an 710069, China

DOI 10.1007/s12274-013-0326-6

Nano Research 2013, 6(7): 485每495

Address correspondence to hlduan@pku.edu.cn

We have examined in situ the local oxidation of graphene-coated materials in air at room temperature for long periods of time. The onset of oxidation takes place at the graphene domain boundaries, and it propagates to the surrounding areas, which dramatically reduces the morphological, electrical, mechanical, and frictional performance of graphene-based devices.

    

Nanoscale control of Ag nanostructures for plasmonic fluorescence enhancement of near-infrared dyes

Fang Xie1 (), Jing S. Pang1, Anthony Centeno2, Mary P. Ryan1, D. Jason Riley1, and Neil M. Alford1


1 Department of Materials and London Centre for Nanotechnology, Imperial College London, London, SW7 2AZ, UK
2 Malaysia Japan International Institute of Technology, University Technology Malaysia International Campus, Jalan Semarak, 54100, Kuala Lumpur, Malaysia

DOI 10.1007/s12274-013-0327-5

Nano Research 2013, 6(7): 496每510

Address correspondence to f.xie@imperial.ac.uk

Two orders of fluorescence enhancement were observed for near- infrared (NIR) dyes by nano-engineering of Ag triangular arrays. Such large area arrays with tunable plasmonic response are excellent candidates for practical sensing applications with high sensitivity and reproducibility.

    

Performance of silver nanoparticles in the catalysis of the oxygen reduction reaction in neutral media: Efficiency limitation due to hydrogen peroxide escape

Christopher C. M. Neumann, Eduardo Laborda, Kristina Tschulik, Kristopher R. Ward, and Richard G. Compton ()


Department of Chemistry, Physical and Theoretical Chemistry Laboratory, Oxford University, South Parks Road, Oxford, OX1 3QZ, United Kingdom

DOI 10.1007/s12274-013-0328-4

Nano Research 2013, 6(7): 511每524

Address correspondence to richard.compton@chem.ox.ac.uk

Electrocatalytic activity for oxygen reduction reaction at neutral pH of 18-nm citrate-capped silver nanoparticles supported on glassy carbon is investigated.

    

Advanced rechargeable lithium-ion batteries based on bendable ZnCo2O4-urchins-on-carbon-fibers electrodes

Bin Liu1,2, Xianfu Wang2, Boyang Liu2, Qiufan Wang2, Dongsheng Tan2, Weifeng Song2, Xiaojuan Hou2, Di Chen2 (), and Guozhen Shen1 ()

 

1 State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China
2 Wuhan National Laboratory for Optoelectronics (WNLO) and College of Optical and Electronic Information, Huazhong University of Science and Technology (HUST), Wuhan 430074, China

DOI 10.1007/s12274-013-0329-3

Nano Research 2013, 6(7): 525每534

Address correspondence to Guozhen Shen, gzshen@semi.ac.cn; Di Chen, dichen@mail.hust.edu.cn

We demonstrate high-performance lithium-ion batteries based on ZnCo2O4-urchins-on-carbon-fibers anodes. Our novel design provides an attractive strategy toward progress in next-generation electrochemical devices with large energy/power density and highly flexible/wearable properties.

    

Reliability tests and improvements for Sc-contacted n-type carbon nanotube transistors

Shibo Liang1, Zhiyong Zhang1 (), Tian Pei1, Ruoming Li2, Yan Li2, and Lianmao Peng1 ()


1 Key Laboratory for the Physics and Chemistry of Nanodevices and Department of Electronics, Peking University, Beijing 100871, China
2 Key Laboratory for the Physics and Chemistry of Nanodevices and College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China

DOI 10.1007/s12274-013-0330-x

Nano Research 2013, 6(7): 535每545

Address correspondence to Zhiyong Zhang, zyzhang@pku.edu.cn; Lianmao Peng, lmpeng@pku.edu.cn

With proper Al2O3 passivation, carbon nanotube n-type FETs display reliable performance in air. Passivation layers reduce gate hysteresis to less than 0.1 V, and key device performance merits remain unchanged even after exposure to air for 146 days. Power-on tests, which evaluate the potential for practical applications, prove that the devices can still work in air for at least 10 h and generate perfect output characteristics afterwards.

    

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