Premium
In Situ Field Emission of Density‐Controlled ZnO Nanowire Arrays
Author(s) -
Wang X. D.,
Zhou J.,
Lao C. S.,
Song J. H.,
Xu N. S.,
Wang Z. L.
Publication year - 2007
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200602467
Subject(s) - materials science , field electron emission , nanowire , current density , in situ , electrode , scanning electron microscope , optoelectronics , nanotechnology , electron , composite material , physics , quantum mechanics , meteorology , chemistry
An effective in situ field‐emission measurement system , in which the distance between the emitting source and counter electrode can be accurately measured and finely controlled by setting up a second stage inside a scanning electron microscopy chamber, is developed. It is found that nanowires with a density between 60 and 80 μm –2 (see figure) and of ca. 1 μm in length give the highest emitting current density.