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Challenges and Prospects of Nanopillar-Based Solar Cells

Zhiyong Fan1,2,3, Daniel J. Ruebusch1,2,3, Asghar A. Rathore1,2,3, Rehan Kapadia1,2,3, Onur Ergen1,2,3, Paul W. Leu1,2,3, and Ali Javey1,2,3£¨£©

1 Department of Electrical Engineering and Computer Sciences, University of California at Berkeley, Berkeley, CA 94720, USA

2 Berkeley Sensor and Actuator Center, University of California at Berkeley, Berkeley, CA 94720, USA

3 Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA

DOI 10.1007/s12274-009-9091-y

Nano Res (2009)2:829-843

Address correspondence to ajavey@eecs.berkeley.edu

Schematic of a fl exible CdS NPLs/CdTe thin fi lm PV device embedded in PDMS.

    

Magnetism in Carbon Nanoscrolls: Quasi-Half-Metals and Half-Metals in Pristine Hydrocarbons

Lin Lai1, Jing Lu1,2£¨£©, Lu Wang1, Guangfu Luo1, Jing Zhou1, Rui Qin1, Yu Chen1, Hong Li1, Zhengxiang Gao1£¨£©, Guangping Li3, Wai Ning Mei2, Yutaka Maeda4,5, Takeshi Akasaka6, and Stefano Sanvito7

1 State Key Laboratory for Mesoscopic Physics and Department of Physics, Peking University, Beijing 100871, China

2 Department of Physics, University of Nebraska at Omaha, Omaha, Nebraska 68182-0266, USA

3 SICAS Center, Lee Hall, SUNY Oneonta, Oneonta, NY 13820, USA

4 Department of Chemistry, Tokyo Gakugei University, Tokyo 184-8501, Japan

5 PRESTO, Japan Science and Technology Agency, 4-1-8 Honcho Kawagushi, Saitama, Japan

6 Center for Tsukuba Advanced Research Alliance, University of Tsukuba, Ibaraki 305-8577, Japan

7 School of Physics and CRANN, Trinity College, Dublin 2, Ireland

DOI 10.1007/s12274-009-9081-0

Nano Res (2009)2:844-850

Address correspondence to Jing Lu, jinglu@pku.edu.cn; Zhengxiang Gao, zxgao@pku.edu.cn

Zigzag-edged carbon nanoscrolls (ZCNSs) are revealed to have a magnetic ground state from fi rst-principles calculations. Unlike their fl at counterpart¡ªzigzag-edged carbon nanoribbons, which are semiconductors with spindegenerate electronic structure¡ªZCNSs can be spin-selective semiconductors, metals, semimetals, or even quasi-half-metal or half-metals, with spin filter function.

    

Synthesis of Isotopically-Labeled Graphite Films by Cold-Wall Chemical Vapor Deposition and Electronic Properties of Graphene Obtained from Such Films

Weiwei Cai1£¨£©, Richard D. Piner1, Yanwu Zhu1, Xuesong Li1, Zhenbing Tan2, Herman Carlo Floresca3, Changli Yang2, Li Lu2, M. J. Kim3, Rodney S. Ruoff1£¨£©

1 Department of Mechanical Engineering and the Texas Materials Institute, University of Texas at Austin, Austin, TX 78712, USA

2 Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China

3 Department of Materials Science and Engineering, University of Texas at Dallas, Richardson, TX 75083, USA

DOI 10.1007/s12274-009-9083-y

Nano Res (2009)2:851-856

Address correspondence to Rodney S. Ruoff, r.ruoff@mail.utexas.edu; Weiwei Cai, wc4943@mail.utexas.edu

By using cold-wall chemical vapor deposition (CVD), isotopically-labeled graphite fi lms have been synthesized on Ni foils.

    

Water-Controlled Synthesis of Low-Dimensional Molecular Crystals and the Fabrication of a New Water and Moisture Indicator

Zhuoyu Ji1,2, Huanli Dong1, Ming Liu2£¨£©, and Wenping Hu1£¨£©

1 Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China

2 Key Laboratory of Nano-Fabrication and Novel Devices Integrated Technology, Institute of Microelectronics, Chinese Academy of Sciences, Beijing 100029, China

DOI 10.1007/s12274-009-9084-x

Nano Res (2009)2:857-864

Address correspondence to Ming Liu, liuming@ime.ac.cn; Wenping Hu, huwp@iccas.ac.cn

Low-dimensional molecular crystallites of square columns and nanolamellae of Zn[TCNQ]2(H2O)2 with large areas have been obtained by controlled addition of water. The system can be used as an indicator for the inspection of traces of water and moisture.

    

Minimizing Purifi cation-Induced Defects in Single-Walled Carbon Nanotubes Gives Films with Improved Conductivity

Yu Wang1, Liping Huang1, Yunqi Liu1£¨£©, Dacheng Wei1, Hongliang Zhang1, Hisashi Kajiura2£¨£©, and Yongming Li2

1 Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China

2 Materials Laboratories, Sony Corporation, Okata, Atsugi City, Kanagawa 243-0021, Japan

DOI 10.1007/s12274-009-9087-7

Nano Res (2009)2:865-871

Address correspondence to Yunqi Liu, liuyq@iccas.ac.cn; Hisashi Kajiura, Hisashi.Kajiura@jp.sony.com

Classical coordination chemistry can be used for the non-destructive purification of single-walled carbon nanotubes (SWNTs). The conductivity of fi lms based on the resulting SWNTs was markedly improved in comparison with those obtained using SWNTs purifi ed by oxidizing acid solutions. The transparent and conducting SWNT fi lms have potential applications in optoelectronic devices.

    

Process Intensification by CO2 for High Quality Carbon Nanotube Forest Growth: Double-Walled Carbon Nanotube Convexity or Single-Walled Carbon Nanotube Bowls?

Jiaqi Huang, Qiang Zhang, Mengqiang Zhao, and Fei Wei£¨£©

Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China

DOI 10.1007/s12274-009-9088-6

Nano Res (2009)2:872-881

Address correspondence to wf-dce@tsinghua.edu.cn

High quality double-walled CNT convexity or single-walled CNT bowls can be controllably grown on wafers with the assistance of CO2.

    

Selective Cytotoxic Effect of ZnO Nanoparticles on Glioma Cells

Stella Ostrovsky1, Gila Kazimirsky2, Aharon Gedanken1£¨£©, and Chaya Brodie2

1 Department of Chemistry and Kanbar Laboratory for Nanomaterials at the Bar-Ilan University Center for Advanced Materials and Nanotechnology, Bar-Ilan University, Ramat-Gan 52900, Israel

2 The Mina and Everard Goodman Faculty of Life Sciences, Bar-Ilan University, Ramat-Gan 52900, Israel

DOI 10.1007/s12274-009-9089-5

Nano Res (2009)2:882-890

Address correspondence to gedanken@mail.biu.ac.il

ZnO nanoparticles exerted a cytotoxic effect on the human glioma cell lines A172, U87, LNZ308, LN18, and LN229, whereas no cytotoxic effect was observed on normal human astrocytes.

    

Fine Tuning of the Sizes and Phases of ZrO2 Nanocrystals

Xiangxing Xu and Xun Wang£¨£©

Department of Chemistry, Tsinghua University, Beijing 100084, China

DOI 10.1007/s12274-009-9092-x

Nano Res (2009)2:891-902

Address correspondence to wangxun@mail.tsinghua.edu.cn

Monodisperse zirconia nanocrystals (tetragonal: T-ZrO2; monoclinic: M-ZrO2) with finely tuned sizes and phases have been selectively synthesized by a facile solvothermal method. For the first time, a diagram of the size to effective strain was mapped for both T-ZrO2 and M-ZrO2 on the sub 10 nm scale, which may expand our knowledge in understanding the phase stabilities of not only zirconia, but also various other polymorphic nanocrystals.

    

Direct Observation of the Strong Interaction Between Carbon Nanotubes and Quartz Substrate

Lei Ding1, Weiwei Zhou1, Thomas P. McNicholas1, Jinyong Wang2, Haibin Chu2, Yan Li2, and Jie Liu1£¨£©

1 Department of Chemistry, Duke University, Durham, North Carolina 27708, USA

2 Beijing National Laboratory for Molecular Sciences, Key Laboratory for the Physics and Chemistry of Nanodevices, National Laboratory of Rare Earth Material Chemistry and Application, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China

DOI 10.1007/s12274-009-9093-9

Nano Res (2009)2:903-910

Address correspondence to j.liu@duke.edu

A CVD method using a high ratio of methanol:ethanol as carbon feed gas results in the growth of high density, long and uniform SWNT arrays on ST-cut single crystal quartz substrates. Obvious ¡°up-shifts¡± of the G-band frequencies originating from the strong interaction between nanotubes and quartz have been found in the Raman spectra.

    

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