Beilstein J. Nanotechnol.2020,11, 1847–1853, doi:10.3762/bjnano.11.166
polarization distribution inside the heterojunction [7][8]. The piezotroniceffect, described first by Zhong Lin Wang in 2007, is a combination of the piezoelectric effect and the properties of non-centrosymmetric semiconductor materials [9].
1D semiconductor nanowires (NWs) are more suitable candidates for
the study of the piezotroniceffect than nanofilms or bulk materials since the smaller physical size and larger surface-to-volume ratio of 1D NWs yields superior mechanical properties [4][10]. In addition, 1D semiconductor NWs can increase the electron mobility and achieve the confinement of light
top-down two-step process, including ICP dry etching and selective EC wet etching. After the lift-off, a single NW was transferred to a flexible PET substrate and was fixed by ITO electrodes to form an ohmic contact for the strain sensor. We have introduced the piezotroniceffect to adjust the carrier
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Figure 1:
(a) Schematic diagram of the epitaxial structure. (b) STEM image taken of the AlGaN/AlN/GaN heteroj...