TY - JOUR
T1 - Characterization and field-emission properties of vertically aligned ZnO nanonails and nanopencils fabricated by a modified thermal-evaporation process
AU - Shen, Guozhen
AU - Bando, Yoshio
AU - Liu, Baodan
AU - Golberg, Dmitri
AU - Lee, Cheol Jin
PY - 2006/2/3
Y1 - 2006/2/3
N2 - Vertically aligned ZnO nanonails and nanopencils are synthesized on a silicon substrate using a modified thermal-evaporation process, without using a catalyst or predeposited buffer layers. An adiabatic layer is used to provide an abrupt temperature decrease and high gas concentration for the nanostructures growth. The structure and morphology of the as-synthesized ZnO nanonails and nanopencils are characterized using X-ray diffraction, and scanning and transmission electron microscopies. Raman and photoluminescence properties are also investigated at room temperature. Field-emission characterization shows that the turn-on fields for the vertically aligned ZnO nanonails and nanopencils are 7.9 and 7.2 V μm1, respectively.
AB - Vertically aligned ZnO nanonails and nanopencils are synthesized on a silicon substrate using a modified thermal-evaporation process, without using a catalyst or predeposited buffer layers. An adiabatic layer is used to provide an abrupt temperature decrease and high gas concentration for the nanostructures growth. The structure and morphology of the as-synthesized ZnO nanonails and nanopencils are characterized using X-ray diffraction, and scanning and transmission electron microscopies. Raman and photoluminescence properties are also investigated at room temperature. Field-emission characterization shows that the turn-on fields for the vertically aligned ZnO nanonails and nanopencils are 7.9 and 7.2 V μm1, respectively.
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U2 - 10.1002/adfm.200500571
DO - 10.1002/adfm.200500571
M3 - Article
AN - SCOPUS:32244446001
VL - 16
SP - 410
EP - 416
JO - Advanced Functional Materials
JF - Advanced Functional Materials
SN - 1616-301X
IS - 3
ER -