Beilstein J. Nanotechnol.2021,12, 566–577, doi:10.3762/bjnano.12.47
engineering.
Keywords: carrier concentration; gallium nitride; graphene; nanowires; Raman spectroscopy; scatteringondefects; strain; Introduction
The combination of excellent electrical and mechanical properties with interesting physical phenomena occurring in two-dimensional structures makes graphene an
, such as strain induced by mechanical contact between materials or gating of graphene by neighbouring layers, are important for further applications. Furthermore, electron scatteringondefects modifies graphene properties in several ways, for example, additional scattering centres reduce carrier
-called defect bands. In the case of graphene transferred onto NWs, the analysis of scatteringondefects allows for one to trace how graphene structure changes after the deposition on NWs and how these changes depend on the density of NWs and their differences in height. An additional aspect is the
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Figure 1:
SEM images of graphene on GaN NWs with different variations in height in N0 (a,d), N100 (b,e), and ...