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    Identifying individual n- and p-type ZnO nanowires by the output voltage sign of piezoelectric nanogenerator

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    Type
    Article
    Authors
    Lin, Ronghui cc
    Song, J H
    Lu, Y F
    Wang, Z L
    Date
    2009-08-18
    Online Publication Date
    2009-08-18
    Print Publication Date
    2009-09-09
    Permanent link to this record
    http://hdl.handle.net/10754/598552
    
    Metadata
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    Abstract
    Based on a comparative study between the piezoelectric outputs of n-type nanowires (NWs) and n-core/p-shell NWs along with the previous study (Lu et al 2009 Nano. Lett. 9 1223), we demonstrate a one-step technique for identifying the conductivity type of individual ZnO nanowires (NWs) based on the output of a piezoelectric nanogenerator without destroying the sample. A negative piezoelectric output voltage indicates an NW is n-type and it appears after the tip scans across the center of the NW, while a positive output voltage reveals p-type conductivity and it appears before the tip scans across the central line of the NW. This atomic force microscopy based technique is reliable for statistically mapping the majority carrier type in ZnO NWs arrays. The technique may also be applied to other wurtzite semiconductors, such as GaN, CdS and ZnS. © 2009 IOP Publishing Ltd.
    Citation
    Lin SS, Song JH, Lu YF, Wang ZL (2009) Identifying individual n- and p-type ZnO nanowires by the output voltage sign of piezoelectric nanogenerator. Nanotechnology 20: 365703. Available: http://dx.doi.org/10.1088/0957-4484/20/36/365703.
    Sponsors
    Research supported by DARPA (Army/AMCOM/REDSTONE AR, W31P4Q-08-1-0009), BES DOE (DE-FG02-07ER46394), Air Force Office (FA9550-08-1-0446), DARPA/ARO W911NF-08-1-0249, KAUST Global Research Partnership, World Premier International Research Center (WPI) Initiative on Materials Nanoarchitectonics, MEXT, Japan, NSF (DMS 0706436, CMMI 0403671). SSL gratefully acknowledges the fellowship from China Scholarship Council (CSC) (No. 2008632026). We thank Dr Jung-il Hong for his guidance in PLD synthesis.
    Publisher
    IOP Publishing
    Journal
    Nanotechnology
    DOI
    10.1088/0957-4484/20/36/365703
    PubMed ID
    19687547
    ae974a485f413a2113503eed53cd6c53
    10.1088/0957-4484/20/36/365703
    Scopus Count
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